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"China's aluminum recycling plants, smelters and refineries will benefit from the TORON separation LIBS technology, which is the world's largest producer of aluminum," said Xie Xiaohan, general manager of Tollang Separation's Recycling business in China. However, there is still much room for improvement in the recycling of used aluminum, which is almost the same quality as primary aluminum, but only 5% of primary aluminum is consumed in the production of recycled aluminum. Therefore, both the economic and environmental point of view, the use of advanced high power laser pointer technology to optimize the aluminum recycling industry chain, should be the focus of industry development.Tao Lang Group believes that LIBS sorting technology can play an important role in upgrading the industrial chain.
Taurang Sorting Resource Recycling recently launched the ultra-efficient LIBS automatic sorting technology and the newly upgraded X-TRACT device. The powerful LIBS technology utilizes dynamic lasers to scan the full bandwidth of the conveyor belt, extending both sortable scrap and reclaimed aluminum grades, significantly increasing throughput and ensuring higher purity after sorting, maximizing added value .
The main advantage of this new hybrid metal sorting technology is the ability to more fully sort and utilize recyclable metals from mixed materials to release more value from previously wasted resources. At the same time, you can significantly save energy, reduce the cost of sorting, and increase profit margins. Through this green technology, customers can more effectively use waste, but also fully reflects the waste recycling industry's commitment to sustainable development.
The new LIBS green laser pointer sorting technology based on existing sensing sorting technology, to further enhance the sorting effect of existing technology. Taurang's X-TRACT sorting equipment, upgraded via LIBS technology, offers higher performance and can be used to classify scrap grades into 5xxx and 6xxx alloys and remove all unwanted impurities.Tollang Group has sold more than 60 aluminum sorting units in Europe, Asia and North America. As one of the world's leading suppliers of scrap metal sorting, the Taurang Group's advanced and reliable technology solutions are widely used for sorting taint tabor from scrap, extruded profile scrap and used beverage cans, Aluminum scrap in industrial waste.
LightFab is a start-up company founded in Rheinisch Westfaelische Technische Hochschule Aachen University. LightFab uses SLE technology to produce 3D precision parts made of quartz glass. LightFab's machine greatly improves the productivity of 3D printing of glass parts used in prototype manufacturing and production of a series of products, enabling the use of SLE technology to achieve mass production of parts.
The project partners saw numerous potential applications of the cheap laser pointer technology. It is not only able to produce channels in glass materials, but also to produce nozzles and other micro devices. The technology also provides unique advantages in drilling and cutting processes. Ablation can achieve the ablation of the material without tension, which has many advantages, such as the manufacture of the interlayer structure in semiconductor technology. It is capable of generating a micro structure of 10 m.
The researchers are working with three laser source manufacturers (Amphos, Edgewave and Trumpf) and the three systems suppliers (4JET, LightFab and Pulsar Photonics) cooperation. Their goal is to develop a multi beam system for large surface applications, as well as to develop a smaller system for micro machining.
According to reports, the "Dalian source" wavelength in the extreme ultraviolet region completely adjustable, with full coherence; the burning laser pointer can work in femtosecond or picosecond pulse mode, you can use the SASE (self amplified spontaneous emission (HGHG) or high gain amplification of harmonic mode). The project of Dalian light source was supported by the National Natural Science Foundation of China, which was jointly developed by the Chinese Academy of Sciences, Dalian Institute of Chemical Physics and Shanghai Institute of applied physics. The project in Dalian Changxing Island on October 2014 officially started construction, the end of September 2016 completed the first installation of light, creating a new record Chinese similar large scientific equipment construction.
With the increasing importance of Raman detection and Raman imaging in biomedical fields, Raman spectroscopy is also well known in many fields. The day before, breakthrough innovation in the micro nano 5mw laser pointer field Raman spectroscopy has attracted extensive attention. Raman technology innovation and upgrading, will further promote the industry to further expand. According to market authority forecast, in the next few years, the Raman spectrum market will show strong growth, mainly due to the recent advances in Raman technology and expanding the application of the foundation.
With the development of nano optical technology, such as chip level optical communication and biomedical imaging, more and more researches are focused on laser. General fixed nanometer laser wavelength, and limit the application of Raman scattering can be transformed into a new wavelength pump. The development of a new type of Raman laser can be used to obtain the tunable wavelength of the laser. In this paper, a new type of graphene material was synthesized by Professor Ruan Shuangchen's team. A tunable wavelength tunable Raman burning laser pointer can be obtained in the material. With no threshold, nano laser Raman temperature operation, laser wavelength tunable laser, wavelength coverage (band from visible to near-infrared) and other characteristics, is expected to achieve new breakthroughs in the application of nano optical techniques such as biomedical imaging etc..
The abuse of antibiotics has led to the spread of drug resistance. Resistance to antibiotics not only requires the development of new antibiotics, but also the need for the development of drug resistance and rapid detection technology and monitoring system, so as to delay and curb the spread of drug resistance. In response to these bottlenecks, the Chinese Academy of Sciences researcher put forward based on the Raman group of fast detection of drug resistance. Based on the single cell imaging, the Raman group does not depend on the reproduction of bacteria, so it is usually able to complete the measurement and mechanism of bacterial resistance within one hour.
At the same time, we found that the application of Raman technology in ceramic detection. Earlier, in Hongkong huagting 2016 China Autumn Art Auction tour XiaMen Railway Station. 19 pieces of ceramic products are used in the new pattern of "scientific humanism" Kam Po, is currently the only with the 100mw laser pointerinternational organization for standardization ISO certification test report of ancient ceramics auction. According to reports, the instrument detection is the X fluorescence spectrometer porcelain in vacuum environment, through the detection of glaze composition Raman spectrometer. Experts can be compared based on the test data and empirical analysis, given the age of ancient ceramics and the authenticity of the reference report.
With the continuous development of Raman technology, Raman spectroscopy has been applied in many fields. It is reported that the future of life science, semiconductors, carbon materials and materials science will be the main application of Raman technology. Among them, the life sciences is the largest application areas, the current market size of just over $400 million, is expected to grow to about $660 million in the next five years. However, there are several factors that restrict the development of Raman market, such as the lack of skilled labor force, high installation cost, professional operation and use of the instrument. Market demand and defects should be the industry brand enterprises to the direction of persistent breakthrough.
Raman spectroscopy is an indispensable technology in the field of spectrum detection. With the development of the society, the demand for food safety, medicine, biology and so on. Raman spectroscopy has also been more attention, many backbone industries such as Perkin Elmer, the Swiss Wantong, Dexiang technology brands into the high power laser pointer energy and cost more and more in the industrial field, promote the further upgrade and update Raman technology.
Update technology is not the ultimate goal of national science and technology innovation, how to further combine with technology and market demand the most hot spots, to further scientific and technological achievements into productive forces is the current national focus on priority. If the domestic brands can always keep an eye on the forefront of instruments of social market demand, that the majority of users with many institutions deep application, accurate positioning, to keep pace with the times, can continue to survive, while maintaining stability in the social and economic background in such a competitive market.
The use of laser through the interaction with the material, according to certain requirements of the processing or molding, collectively referred to as light manufacturing. Nearly 20 years, light manufacturing technology has penetrated into the high-tech fields and industries, and began to replace or transform some of the traditional processing industry. In the developed countries of the automotive industry, 50% -70% of the parts is completed by laser processing. Light manufacturing technology to improve the automotive industry R & D and manufacturing level, is playing an increasingly important role.
At present, the light source used in the light manufacturing technology is mainly laser, the high power laser pointer beam has the characteristics of high energy density, high single-palladium and high directivity, which makes the optical manufacturing technology has many advantages over the traditional manufacturing technology. The tool used in this technology is the "laser knife", no tool wear during machining; no effect of cutting force on the workpiece during machining, so the workpiece without cold processing deformation; due to high energy injection processing time, the workpiece heat is small, The laser has good spatial control (direction change, rotation, scanning, etc.) and time control (open) of the laser beam, which can not be processed by the conventional technology. , Off, pulse interval), particularly suitable for automated processing, large-scale manufacturing in the production of high efficiency; laser processing of the object material, shape, size and processing environment are great freedom; low noise, does not produce harmful rays and Residue, the production process of environmental pollution is small; can save molds, shorten product development cycle and reduce development costs; material waste, in large-scale production of low manufacturing costs.
Laser manufacturing, laser drilling, laser marking and laser cutting are the key technologies for light manufacturing. No cutting stress, no cutting burr; high precision, good repeatability, do not damage the surface of the workpiece. The cutting edge is smooth, smooth cutting edge, cutting edge parallelism, no procurement follow-up processing; Laser drilling speed, high efficiency, suitable for large quantities of high-density group of holes processing; green laser pointer drilling can obtain a large aspect ratio can be hard, brittle, soft and other materials for processing, and even in the Difficult to process materials on the inclined plane processing holes; laser drilling process clean, non-polluting. Laser marking is a non-contact marking, fast, easy to wear mark, laser marking machine and very easy to combine with the assembly line. Laser cutting is similar to machining in a process of milling, it is the use of focused laser beam to cut the material layer by layer.
Laser welding is the use of high-intensity laser beam will be welded to the local melting temperature of molten metal fusion welded joints made of the process. Can weld high-melting point metal, non-metal, composite materials and other special materials, but also to achieve dissimilar materials and special welding structure welding; weld with "self-purification" effect, high quality weld; can be accurate welding, generally do not need Filling the metal; through the light guide system so that the laser beam and a number of devices constitute a flexible processing system, welding a high degree of automation, high production efficiency; high-energy beam welding, laser welding is characterized by the largest vacuum chamber does not produce x-ray .
Laser surface hardening is divided into two laser pointer hardening and laser melting hardening. Laser phase transformation hardening, also known as laser quenching, it is a high-energy laser beam rapid scanning of the workpiece, so that the surface temperature of the irradiated metal or alloy to a very fast rate to the point above the laser beam from the irradiated parts, Due to heat conduction, in the cold state of the matrix to rapidly cooling and self-quenching, get a smaller layer of hardened layer, the hardness is generally higher than the conventional quenching hardness; laser melting hardening process similar to the previous process, the difference is that the laser The surface of the material heating temperature is higher, the final part of the surface to form a layer of tissue flame hardening layer. Laser welding is the use of high-energy laser beam irradiation of the cladding material, with the substrate surface layer with rapid melting, forming with the substrate metallurgy with completely different composition and performance of the alloy coating.
Light rapid prototyping technology principle is under the control of the computer, CAD and other parts of the design model and data, the burning laser pointer beam will be forming material layer by layer curing, from the point and line structure parts of the surface (layer), the surface accurate accumulation of three-dimensional Solid model or part of the process. The use of light rapid prototyping technology, can significantly shorten the product development cycle, greatly reduce development costs, can quickly produce products to adapt to market changes, maintain and enhance the competitiveness of products in the market. At the same time, the use of optical rapid prototyping technology is also to achieve concurrent engineering and agile manufacturing effective technical approach.
The afternoon of December 9th, Jingshan county government and the Wuhan Chutian Laser (Group) Corporation signed a project cooperation framework contract in Wuhan, in the Jingshan Economic Development Zone to build China (Jingshan) high power laser pointer industrial base. Chutian Laser Group Chairman Sun Wen, Jingshan county Party Secretary Zhou Zhihong attended the signing ceremony. The government of Jingshan county Party committee, county deputy party secretary Guo Zhixiang, CEO Han Shuangyue Chutian Laser group representing the county government, Chutian Laser group company to sign the contract.
According to the contract, China (Jingshan) laser industrial base project covers an area of 5000 acres, carrying laser Chutian Laser group cutting, laser welding, laser marking, laser surface treatment and laser laser drilling and other industrial projects, the formation of laser application and laser processing system, laser and laser accessories applications such as industrial laser industry chain development the application in the industrial, medical, commercial, scientific research, information and military fields such as laser crystal, key components and fittings, laser products and laser system, public service platform, to build the country's largest industrial base of the green laser pointer. At the same time, landmark buildings, main street, important attractions and public leisure places in Jingshan City, the construction of cultural and creative projects by means of laser, laser technology, intelligent manufacturing and construction of Jingshan Jingshan City Planning Exhibition hall.
The whole project is divided into three stages, and the construction period is 5 years. Among them, the first phase of the project site in Jingshan Intelligent Manufacturing Industrial Park, the construction period is 6 months, the main building industrial laser project. The two period and the three period are 24 months and 30 months respectively.
Welcome to the sun. He said, Chutian Laser signed project cooperation framework contract with the Jingshan county government, is a major event in the history of the company, the wedding. Morning, Jingshan county government and the East Lake high tech Zone signed a strategic cooperation framework agreement, intends to cooperate in undertaking industrial transfer, tennis activities docking, personnel and technology exchanges and cooperation and other fields, in such a favorable background, Chutian Laser selection in Jingshan, is to follow the development of the situation, in response to the two governments strategic cooperation, implementation a reflection of industrial expansion. The company will set up a working team, as soon as possible to promote the project landing.
Zhou Zhihong said, the two sides signed the contract, indicating that Jingshan County People's government and the Chutian Laser Group all-round cooperation started. "13th Five-Year" period, Jingshan County, Hubei county economic development should be the vanguard, striving for National Ecological Civilization Construction Demonstration County, built national comprehensive mechanization Demonstration County, built in Central China intelligent industrial city, to achieve the "two competition" and "two" target. Chutian Laser settled in Jingshan, both the East Lake high tech Zone also has support, Chutian Laser leadership to the county Party committee and government support to build confidence in the scale of billions of Chutian Laser industry, sprint billion industry in Jingshan to build the largest China laser pointer industry base, the realization of "13th Five-Year" at the end of the Jingshan economic growth doubled. Departments Gongzuozhuanban, functions will provide the full range of services to promote the smooth implementation of the project, Chutian laser.
At the meeting, the executive chairman Cheng Aifen Hubei chushang Association will support the Jingshan County Association for international cooperation of enterprises in Hubei Province in the upcoming annual meeting, to promote investment projects, the introduction of a number of international and domestic enterprises, build the arrangements for matters related to international intelligent industrial park. Chu business group board of directors chairman Li Shufeng on the "policy + fund" mode of operation, the introduction of a number of good companies settled in Jingshan, the idea is introduced. Report Jingshan text brigade industry project responsible person in charge of Chutian Laser into the burning laser pointer industry are introduced. County Bureau of industry and information, the new County Housing Construction Bureau, bureau, county style Jingcheng investment group, the county people's Hospital and other responsible persons have the position to speak it, Chutian Laser project located in Jingshan, work cohesion, both sides of communication services.
According to reports, Chutian Laser Group Co. Ltd. is located in East Lake high tech Zone, founded 30 years, has developed into a large scale, product variety, sound marketing network of professional laser product manufacturers, industrial laser, laser medical, cultural and creative industries under three 3w green laser group, in Beijing, Wuhan, Suzhou, Shanghai and Wenzhou has a production base. The company is "Wuhan China Optics Valley" the core enterprise and the Wuhan star enterprise, is the national Torch Plan key high and new technology enterprise".
With the average annual increase in light vehicle production to 4% by 2020, the airbag market is expected to achieve a compound annual growth rate (CAGR) of 8.1% during this period. In part because of the overall shift in growth stemming from the introduction of new safety regulations in India, China and other developing countries. By 2020, emerging economies are expected to account for 58% of global vehicle production. China alone will account for more than 30% of its commercial vehicles and passenger cars production will exceed Western Europe and North America.
Recently, large-scale airbag recalls have sparked public attention to the need to incorporate stringent quality standards into the manufacture of airbags. The impact on safety of these lifesaving equipment and equipment is a sign that consumer confidence has been eroded by relentless cost pressures on 500mw laser pointersuppliers. To win back the trust of the public, OEMs are taking extraordinary steps to ensure the safety of their passengers. These new measures, aimed at improving airbag quality control, pose additional challenges to Tier 1 suppliers, who continue to focus on reducing the unit cost of airbags in the ever-changing airbag supply ecosystem.
For mature markets, increasing passive safety will enable new airbags to achieve a wider range of applications, such as in a single advanced vehicle can have up to 12 kinds of applications. For most new vehicles, the driver side, passenger side and side curtain airbags are standard, while many passenger and light trucks are equipped with eight or more airbags. In addition, the dimensions of products are constantly evolving and evolving with the introduction of larger, wider side impact airbags, as recommended by automotive safety testing organizations such as the New Car Evaluation Procedure (NCAP).
When combined with process optimization and resource optimization, the most advanced 10000mw laser pointer cutting technology can help airbag manufacturers overcome multiple business challenges. Advanced balloon design and cutting technology to meet these stringent new requirements, even in the use of low-cost materials such as polyester, but also to ensure that the final quality close to zero defect. By increasing productivity and efficiency, suppliers can achieve gains, remain competitive, and meet the increasingly demanding requirements of OEMs. Identifying anomalies during the production process can result in significant losses, such as downtime or expensive re-cutting, especially when the safety of vehicle occupants is at risk. Today, the new airbag pre-production software is designed to standardize the entire production process by validating every step of the airbag fabric preparation process.
Since the geometry of the cutting part comes from the industrial design department, in various forms, the first step is to check the unit and the consistency of the scale. The second step is to remove all the geometries that are not needed for the cut, even if the naked eye is not visible. The powerful wizard program detects and marks them to eliminate the risk of cutting 1 / 10mm holes in the center of the airbag. For multi-layer cutting, the third step involves optimizing fabric usage while ensuring laser pointer cutting quality. For a molded airbag, the next step is to build the mesh, so as to prepare for the subsequent optimization of cutting, and according to the layout of industrial loom assembly parts. Before the first cut, the necessary data is extracted in a few minutes.
The innovative use of new airbags continues to deepen both inside and outside the vehicle. Volvo and Land Rover are currently offering pedestrian airbags for selected models on the European market. In the range of 20 to 50 km per hour, these airbags are designed to minimize certain frontal impacts. Other concepts still under development include a rear airbag mounted on the front seat and roof.
Because of the aftermath of the airbag inflator scandal, the automaker has taken stringent measures to strengthen the inspection of the components of the airbag ignition system. The automated inspection system enables suppliers to ensure that their components meet stringent safety standards without slowing production schedule. For the fabric part of the airbag, the type of inflator used generally determines the choice of material. In a similar fashion, automated visual inspection has become an important part of the quality 3w green laser monitoring process. Today, automakers require many airbag suppliers to install scanners and vision systems for size control of airbag cuttings.
However, the strengthening measures only exacerbate the complexity of the manufacturing process. Despite these new development initiatives, airbag suppliers still maintain the same cost targets to make a profit. Airbag manufacturers are reaching the limit of cost optimization, so there is an urgent need to find a solution to the plight of a sharp decline in costs. This explains why many manufacturers are using less expensive materials, such as polyester fibers. However, lower costs are bound to exhibit disadvantages because the inherent resilience of these materials tends to be more severe.
Theoretically, cutting a molded airbag requires designing a starting point, and using a specific template to outline a consistent cutting path. If the material itself is completely rule-based, it will be the only operation to be performed. However, since low-cost polyesters are more elastic than other fibers, weaving and post-processing of the material may cause bending or skewing of all or part of the workpiece.
These complex problems can now be easily solved with a new generation of green astronomy laser cutting preparation software. By defining specific areas of the unmodifiable primary molding balloon design, the cutter instantaneously adapts the geometry of each cut to the actual profile of the fabric while meeting the positioning and spacing rules. The SmartCutting software demonstrates this flexible, dynamic interaction between the balloon cutting preparation software and the tool. The cut piece is sized exactly the same as the verification template and has a constant system capacity, even when cutting highly deformed materials.
The use of a high power green laser pointer beam to cut a thick stack of cutting and suturing materials at high speed conditions and without melting the material layer requires highly precise dynamic laser power control. In fact, cutting is done by sublimation, but this can only be achieved if the laser beam power level is adjusted in real time. When the strength is insufficient, the machined parts can not be cut correctly. And when the strength is too strong, the layers of material will be squeezed together, resulting in the accumulation of fiber particles between the layers. A new generation of laser cutting machine can effectively control the laser power intensity in the nearest wattage and microsecond range.
In addition, several factors may be taken into account, such as the nature of the material to be cut, the geometry of the shape, the cutting speed and acceleration, and the like. It is also necessary to consider the workpieces cut a little earlier in order to adjust the temperature at which the risk of melting of the material in the vicinity of the zone is increased slightly and which may cause the adjacent zone to melt. This is precisely the risk of tangent, which cuts the flow through a single cutting path to ensure flawless quality.
The production process is a step that leads to profit or loss. By using the right pre-production software and the latest blue laser pointer cutting technology, airbag manufacturers can reduce their unit production costs while producing flawless products that contribute to the road safety value chain.
Mobile phone is no longer a rare thing, and now people in daily life essential personal items, instant messaging, camera, use the APP, play games and even pay for the purchase, all inseparable from smart phones. A small cell phone, even with so many features, it makes people have to wonder! And you know, green laser pointer as an advanced processing technology, in the mobile phone manufacturing process, played a pivotal role.
Laser marking is the use of high-energy laser irradiation of the workpiece on the local exposure, the surface material vaporization or color change of the chemical reaction, leaving a permanent mark of a marking method, with high precision, fast, clear mark And so on. Mobile phone laser marking this permanent marking method, can improve the anti-counterfeiting ability, but also increase the added value, the product looks higher grade, more brand. In the phone we can find the shadow of laser marking, such as: Logo marking, cell phone keys, cell phone casing, cell phone batteries, mobile phone accessories, marking, etc., even in your invisible cell phone, there are parts laser pointer .
Laser cutting can be metal or non-metallic parts and other small parts for precision cutting or micro-hole processing, cutting with high accuracy, speed, heat and other advantages. Mobile phone common laser cutting technology: sapphire glass mobile phone screen laser cutting, lens protection lens laser cutting, mobile phone Home key laser cutting, FPC flexible circuit board laser cutting, mobile phone handset network laser drilling and so on.
Laser welding is the use of high-energy laser beam as a heat source, the material surface melting and then solidified into a whole. Heat affected zone size, weld aesthetics, welding efficiency, is an important indicator of good or bad welding process. HG laser precision burning laser pointer welding machine for the processing of parts, precision instruments and other small parts, high precision welding, integrated, split and other welding supporting the choice of workstations.
Today, LDS laser direct molding technology has been widely used in the manufacture of smart phones, the advantage is that the use of laser direct molding technology marked on the phone shell antenna trajectory, whether it is a straight line, curve, as long as the laser can place, Can create 3D effects, to maximize the savings of mobile space, and can adjust the antenna trajectory at any time. As a result, the phone will be able to do more thin, more refined, stability and shock resistance is also stronger.
Personal electronic equipment, represented by mobile phones, is greatly changing and facilitating people's lives. Functionalization, intelligence, and smartness are the development direction of mobile phones. With the micro-electronics industry, technological progress and the pursuit of personalized mobile phone, fine 400mw laser pointer processing technology in mobile phone manufacturing play an increasingly important role. At the same time, the laser is also promoting the development of other microelectronics manufacturing-related industries.
http://laserman123.parsiblog.com/Posts/1/Process+Analysis+of+Laser+Welding/
http://www.elosinternacional.org/blogs/view/728/process-analysis-of-laser-welding
The mold repair and maintenance of A-MAX steel die with crack and wear were carried out by laser welding, and the microstructure, tensile property and fatigue property of the die were analyzed. The results show that there are fine lath martensite and some white ferrite structures distributed along the grain boundary in the weld zone of the high power laser pointer welding joint. The HAZ of the joint is ferrite and pearlite. After laser welding of the mold tensile strength and elongation of the new A-MAX mold 93.95% and 88.92%, and the repair of the fatigue life of the mold has been significantly improved, and the new mold fatigue cycle times in the same order of magnitude.
Mold manufacturing with the rapid development of industrial technology and expanding, in the modern manufacturing industry, especially in the field of precision manufacturing to obtain a wide range of applications, can effectively improve the utilization of materials and extend the service life of the product. With the rapid development of die-casting industry, die-casting molds on the overall mechanical properties and service life of higher demands, and because of the high cost of die-casting molds, molds in the long-term use conditions due to high-speed, high pressure, alternating hot or cold The working environment of the load causes the mold surface or the internal appearance corrosion, the wear or the crack causes the mold performance to drop, may even cause the mold to fail. The manufacture of molds involves the selection of materials, complex precision machining and associated heat treatment systems, which are expensive to manufacture and long in cycle time. Therefore, in order to avoid the mold due to cracks or wear and other forms of failure affecting production, and the use of mold repair welding technology, the technology is a die surface to solve the direct and effective method. Laser welding technology as a high-power density, energy concentration, the loss of welding consumables is small, and easy to automate the efficient high-precision welding, can achieve large penetration depth, low residual stress and deformation of the welding components, so laser pointer repair mold welding technology Because of its low cost, short cycle, good repair effect and become a common mold repair welding technology to overcome the cold welding and welding in the repair of fine mold surface defects.
Test conditions: The object of the study is a cracked engine block die casting mold. The mold material is A-MAX steel. It is refined by vacuum electroslag remelting process. The hardenability is good. The service life is 3-5 times of SKD61 steel. The crack depth is 40% lower than that of SKD61 steel. The steel has excellent resistance to cracking, high temperature toughness, high temperature strength, fire resistance and high temperature strength properties for a variety of large, complex die-casting molds. During the test, acetone or absolute ethanol was used instead of industrial cleaners for surface cleaning prior to welding. Repeated cleaning was necessary to meet the welding requirements because incomplete cleaning or secondary contamination could eventually lead to a significant reduction in repair quality .
Test equipment: laser welding equipment using SLC CNC laser multi-function machine, power 5KW, wavelength 10.6μm, the minimum spot diameter of 0.12mm, welding speed of 1m / min, shielding gas for argon.
Test method: Tensile test was carried out by using HY-932 tensile testing machine. According to GB / T 228-2002 standard, the total length of tensile specimen is 200mm, segment length is 95mm, radius of arc is 20mm, test temperature is Room temperature. The fatigue properties of the joint were tested with QBG-25 high frequency fatigue tester. The fatigue specimen was made according to GB / T 2015111-1994. The stress ratio of cyclic stress was 0.1 and the frequency was 100Hz. In order to reduce the test error, two samples of each parallel test.
Test results and analysis: can be seen from Figure 1, the center of the weld between the two plates in the phase plate. Because the base material is austenite and ferrite, the middle of the weld is fine grain structure, and the fusion zone is columnar. Because burning laser pointer welding has high peak temperature, faster welding speed and cooling rate, The heat affected zone of the laser welding of the -MAX steel mold is very small, but it can be seen that the microstructure of the heat affected zone of the joint in the mold repair is white ferrite and black pearlite structure. As can be seen from Figure 1b, A-MAX steel weld microstructure is relatively small quenching organizations, but also observed a small lath martensite and some along the grain boundary distribution of white ferrite. In addition, there is a small amount of fine precipitates in the welds of the A-MAX steel, which improves the strength of the A-MAX steel molds. Because the energy density of the laser beam is concentrated during the laser welding process, and the welding speed of the 50mw laser pointer is relatively fast, the liquid metal in the joint melting zone will solidify at a faster cooling rate, which is equivalent to a once Rapid hardening process, get the strength, hardness and plasticity of good lath martensite structure.
The left figure shows the results of comparison of the tensile strength and elongation of the new mold. The tensile strength of the new A-MAX mold is 843MPa and the elongation is 9.419%. The tensile strength of the A-MAX mold is 792MPa and the elongation is 8.375%. After the repair, the tensile strength of the mold reaches new A-MAX 93.95% of the mold, the elongation of the new mold also reached 88.92%. It can be seen, after 5mw laser pointer welding repair hot work die welded joints tensile strength and elongation are very close to the new A-MAX mold, with better mechanical properties. The reason for the weld strength at the mold repair site is close to the A-MAX steel base material, because the mold repair site is the highest energy and temperature zone in the laser welding, resulting in the welding zone in the welding direction is greater than the welding temperature Ac3 line temperature, and A-MAX steel quenched and tempered composition was more evenly distributed. So that at high temperature conditions, carbon and other alloying elements can be fully diffused, easy to obtain a uniform composition of austenite organizational structure. In addition, the green laser pointer welding speed is faster, and then the weld zone will melt rapidly at a rapid rate of cooling down, and finally the formation of regularly arranged carbon-lean lath martensite and a small amount of residual ferrite, and by laser welding , The lath martensite structure obtained by welding joint is more fine.
The figure on the right is the results of fatigue tests on two specimens tested on a QBG-25 high-frequency fatigue tester. Sample 1 and Sample 2 are fatigue samples of the restored mold, and Sample 3 and Sample 4 are fatigue samples of the new mold. It can be seen that the number of fatigue cycles of sample 3 is the largest, and the average of two tests is 20619 times. The average number of fatigue cycles of A-MAX mold 1 and sample 2 is 17322 times, 83.69%. It can be seen, the mold is about to scrap the use of laser repair welding after the high-frequency fatigue life is improved, close to the new A-MAX mold, and with the new mold fatigue cycle has been in the same order of magnitude.
The microstructures of HAZ are ferrite and pearlite microstructure, and the microstructures of the joint HAZ are ferrite and microstructures. The tensile strength and elongation of the hot work die were 93.95% and 89.92% of that of the new A-MAX mold, and the mechanical properties of the mold after the repair were close to that of the new A-MAX mold. After 2000mw laser pointer welding repair Thermal die fatigue life of about 83.69% of new mold, with the new mold fatigue cycle has been an order of magnitude.
http://socialenginepro.com/demo_i_love_metro/blogs/11020/17946/the-best-currently-available-hom
With the "Made in China 2025" planning and implementation, for the automation, intelligent put forward higher requirements, bear the brunt of the manufacturing sector. How to adapt to the transformation and upgrading requirements, how to enhance their competitiveness, is the primary problem faced by domestic enterprises. To this end, OFweek blue laser pointer network editor interviewed AMADA (China) Company Sheet Metal Business Sales Promotion Division Sales Planning Division, Mr. Gu Diou, to explore the transformation and upgrading of the road.
It is understood that AMADA this year is the 70th anniversary of the establishment, during which AMADA has grown into the world's leading supplier of sheet metal processing. In this regard, Gu Diou said: "AMADA from a small company to grow into an international business, mainly due to we have been focused on the sheet metal processing, and continue to develop new technologies and equipment, to provide users with more efficient solution Although we have achieved impressive results in the area of sheet metal processing, such as the invention of nitrogen-cut stainless steel and laser processing machines, we are constantly experimenting with new technologies and new equipment by continually updating evolution to remain dynamic and Competitiveness! "
This MWCS2016, AMADA to bring users the latest digital sheet metal factory "VPSS 3i" concept of processing, focusing on the overall quality from the product, taking into account the most reasonable process, the most optimized paperless processing revolution, focused display A precision machining and production processing solutions. In the precision machining, the main display of the new fiber burning laser pointer processing machine ENSIS3015AJ, a few full-automatic solution EM3510ZRB and high-precision hybrid drive bending machine HG8025. The ENSIS3015AJ is equipped with AMADA's independently developed fiber laser oscillator, combined with the unique latest beam control technology, to achieve a 2KW cutting 25mm thick plate, the energy-saving effect will be maximized at the same time, variable variants for the efficient production possible. EM3510ZRB equipped with the world's unique driving mode: dual-AC servo direct-drive motor, and since the advent of the use of CNC punch press ZR turret, the most innovative. Not only can achieve high-speed, high-efficiency processing, but also to achieve the finished product without scratching the high-quality processing. Combined with ID molds and unrestricted machining construction, it is easy to cope with variants of variable production and 72 hours of continuous machining. The HG8025 maximizes the operating performance of the bending machine with its high-rigidity body + new hybrid drive system and angular solution (no bending test required and stable bending accuracy), achieving high-speed, high-precision, Of the bending process.
In mass production processing, AMADA mainly demonstrated LCG3015AJ automatic and efficient fiber 3000mw laser pointer processing machine, AE-NT + MP2512L automatic loading and unloading number of red package and 3D automatic high-precision bending machine HM. Which LCG3015AJ whether beam quality, processing efficiency, or cost-effective are in the world's best standards. AC servo drive CNC punch press AE2510NT and automatic loading and unloading device MP2512L combination, can be a long continuous uninterrupted operation, the punching capacity to maximize, and at the same time can reduce labor costs. In addition, AMADA also demonstrated the world's most high-speed pulse band saws PCSAW720, automatic tapping machine CTS900NT, mold grinding machine TOGU3.
In recent years, the industrial concept of 4.0 in the global context of rapid warming, China has also made "2025" plan in China, focusing on the direction of the intelligent transformation and upgrading, manufacturing bear the brunt. In this regard, Gu Diou said: \ This is also the AMADA digital sheet metal factory 'VPSS 3i' processing concept of innovation, the balance has been the various channels Process, through the reverse process and the introduction of the timeline to enhance the quality of sheet metal processing and intelligence level.We also continue to enhance the level of automation of sheet metal processing equipment to make it towards high-speed, high precision, low cost and energy saving and environmental protection Direction. "
"At the same time, intelligence has brought new opportunities and new challenges." Gu Diu added: "China's sheet metal processing industry has been mass production of the times, in the industrial 4.0, IoT, and China 2025 under the wave of China's sheet metal processing industry will move in the direction of polarization for the strict quality control, strict delivery orders will be more and more enterprises.In contrast, the blind pursuit of low prices, quality control is not strictly business orders Will be less and less.In the case of weak 1000mw laser pointer market, personalized customization needs become mainstream, multi-variety of small-volume production of sheet metal processing flexibility for the new requirements.AMADA digital sheet metal factory concept, through continuous optimization and balance of the To enhance the efficiency and competitiveness of the sheet metal processing industry, to meet the industrial 4.0, IoT and 2025 in China to create new requirements!
Over the past decade, the so-called single-layer materials by scientists attach great importance to these materials in the field of physics has a very large potential. At the beginning of 2016, the research team of the University of Würzburg was supported by the European Research Council (ERC) 15 million euros for the study of transition metal sulfides (TMDC). Some progress has been made.
In physics, a & quot; monolayer & quot; refers to a minimum thickness of a solid material, typically a single atomic layer thickness, and the crystalline material may be three or more blue laser pointer of atoms, also referred to as two-dimensional materials. Two-dimensional materials often exhibit unexpected properties. Such as TMDC, have similar characteristics of the semiconductor can be used to manufacture ultra-small, energy-efficient chip. TMDC has a fairly simple two-dimensional structure. Molybdenum or tungsten and other transition metal atoms in a single row structure, caught in the same thin layer of sulfur between the elements. TMDC made with different base components has a wide range of electronic and optical properties.
The team at the University of Würzburg, Germany, found that TMDC can emit light when it absorbs energy. Experiments show that this new single-layer material can be used in the manufacture of new energy efficient laser source can also be used for quantum effects research.
Quantum Communications Research: First, a single layer of material is prepared by a simple method. In the first step, the multilayer film is peeled off from the TMDC crystal with tape. A thinner film is peeled off from the multilayer film, and is repeated to obtain a single-layer material. The monolayer material is then cooled to a temperature slightly above absolute zero and excited with a 3000mw laser pointer, under which the single layer of material will emit a single photon. The researchers explained that, in fact, the excitation of two photons, light particles are produced in pairs. This photon is very interesting to the source: the photon pairs of two photon states overlap each other, entangled together. The state of one photon directly affects the other photon, and is not limited by distance, a principle that can be used to encrypt communications.
For new laser sources: Scientists at the University of Würzburg have demonstrated another application of this monolayer material. A single layer of material is placed between the two mirrors and then excited with a laser. When the laser radiation reaches a certain degree, TMDC starts to emit photons. These photons hit the mirror and send color back to the TMDC plate, which stimulates TMDC atoms to produce new photons. "We call this process a strong coupling, and the action of light and matter produces exciton-polarized photons." This is the first time that polarized photons have been detected at room temperature in monatomic layers. This "clone" photon has similar properties to 400mw laser pointer, but produces a fundamentally different principle. Ideally, after the initial excitation, new light particles can be generated by self-sufficiency, without any additional energy supply. In contrast, the laser material in the laser requires external sustained excitation.
http://laserman123.canalblog.com/archives/2016/11/08/34539740.html
http://faceluck.org/blogs/post/5908#sthash.5sempsXl.BdXjlo8t.dpbs
http://laserman123.jigsy.com/entries/general/analysis-of-the-principle-of-laser-fire-alarm-system
Laser cladding technology, is the 20th century, 70 years with the development of high-power laser rise of a new surface modification technology. Laser surface welding technology is the 200mw laser pointer beam, the alloy powder or ceramic powder and the substrate surface heating and melting rapidly, after the removal of the beam cooling rate of dilution formed by self-quenching, metallurgical bonding with the substrate material was the surface coating , Thereby significantly improving the substrate surface wear, corrosion resistance, heat resistance, oxidation resistance and electrical properties of a surface strengthening method. For example, 60 # steel after carbon-tungsten laser cladding, the hardness of up to 2200HV above, wear-resistant properties of matrix 60 # steel about 20 times. After laser cladding CoCrSiB alloy on the surface of Q235 steel, its abrasion resistance was compared with that of flame spraying, and the corrosion resistance of the former was obviously higher than that of the latter.
Laser cladding technology is a very cost-effective new technology, it can be inexpensive metal substrate to prepare high-performance alloy surface without affecting the nature of the matrix, reduce costs and save expensive precious metal materials, therefore, the world On the industrial advanced countries on the 10mw laser pointer cladding technology research and application of very seriously. Laser lasers used in laser cladding include CO2 lasers and solid-state lasers (including disc lasers, fiber lasers, and diode lasers), which have been phased out due to low photoelectric conversion efficiency and cumbersome maintenance.
For the continuous CO2 laser cladding, domestic and foreign scholars have done a lot of research. The development of high power solid-state lasers has been developing rapidly, mainly for non-ferrous alloy surface modification. According to the literature, laser cladding of aluminum alloy with CO2 laser, aluminum alloy substrate in the CO2 laser irradiation conditions easily deformed, or even collapse. Solid-state lasers, especially disc lasers, have an output wavelength of 1.06 μm, which is one order of magnitude lower than that of CO2 5mw laser pointer, and is therefore more suitable for laser cladding of such metals. Laser cladding, according to the different powder feeding process can be divided into two categories: Powder Preset and synchronous powder feeding method. The effect of the two methods is similar, and the synchronous powder feeding method is easy to realize the automatic control, the laser energy absorption rate is high, and no internal pores, especially the cladding metal cermets, can remarkably improve the cracking resistance of the cladding layer. Cladding uniform distribution within the advantages.
Laser cladding has the following characteristics: fast cooling rate (up to 106K / s), belonging to rapid solidification process, easy to get fine grain structure or produce equilibrium state can not get new phase, such as unsteady phase, Low dilution rate (generally less than 5%), and the matrix was a solid combination of metallurgical or interface diffusion, through the adjustment of 1mw laser pointer process parameters, you can get a good low dilution coating, and coating composition and dilution controllable; Heat input and distortion is small, especially with high power density rapid cladding, the deformation can be reduced to the parts assembly tolerances; powder selection almost without any restrictions, especially in the melting point of low melting point metal surface alloy; Layer thickness range, single-channel powder coating thickness of 0.2-2.0mm in a single time; can conduct constituency welding, material consumption less, with excellent cost-effective; beam targeting can make difficult to close the area of welding; process easy to implement Automation, it is suitable for common wearing parts wear repair.
Laser cladding and laser alloying are the rapid melting processes produced by high energy density laser beams on the surface of the substrate formed on the substrate with each other fusion, with completely different composition and properties of the alloy coating. The process is similar, but there are essentially different, the main difference: the 2000mw laser pointer cladding process cladding material is completely melted, and matrix melting layer is very thin, so the composition of the cladding minimal impact, and laser alloy Is to add alloying elements in the surface of the substrate to form a new alloy layer based on the substrate; laser cladding is not essentially the molten metal surface layer as a solvent, but will be configured separately Of the alloy powder melting, making it the subject of the cladding layer alloy, while the matrix alloy also has a thin layer of melting, with the formation of metallurgical bonding.
Laser cladding technology to prepare new materials is an important basis for the repair and remanufacture of failed parts under extreme conditions and the direct manufacture of metal parts, which is highly valued by scientists and enterprises all over the world.
https://www.pindat.com/pindata/user/laserman123.op.reis/2016-11-02
