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With the rapid development of sheet metal processing technology, processing technology is also changing, to the sheet metal processing has brought many revolutionary ideas. As a traditional sheet metal cutting equipment, are: CNC shear bed, punch, flame cutting, plasma cutting, high pressure water cutting.

These devices in the market occupies a considerable market share, one of them familiar, two cheap, although they are relative to the most powerful laser cutting and other modern technology is very obvious disadvantage, but they also have their own unique advantages. CNC shearing machine because it is mainly straight cut, although the knife can cut up to 4 meters of the plate, but it can only be used only in the need for straight-cut sheet metal processing. Generally used in the plate after the flat cut, etc. only need to cut the industry in a straight line.

High pressure water cutting is the use of high-speed water jet cutting of sheet metal doped corundum implementation, it almost no restrictions on the material, the cutting thickness is almost up to 100mm or more, easy to burst with Thermal Ceramics and glass cutting material can be cut, such as copper and aluminum can be cut by laser reflection materials and laser cutting water jet, there is a greater obstacle. The disadvantage of water cutting is that the processing speed is too slow, too dirty, not environmentally friendly, and consumables are also higher.

red laser pointer

Laser cutting is a process revolution of sheet metal processing, and it is a machining center in sheet metal processing". Laser cutting has a high degree of flexibility, cutting speed, high production efficiency, short product cycle, and has won a wide market for customers. Laser cutting and no cutting force, no deformation; no tool wear material, good adaptability; whether it is simple or complex parts, can be cut with a precision of blue laser pointer rapid forming; the narrow kerf, good cutting quality, high degree of automation, simple operation, low labor intensity, no pollution; can realize automatic cutting like, nesting, improve material utilization, low production cost, good economic benefit. The effective life of the technology, at present the ultra sheet 2 mm is mostly used in laser cutting, many foreign experts agreed that the next 30-40 years is the golden period of development of laser processing technology (is the development direction of sheet metal processing).

Cutting accuracy is the first element to judge the quality of laser cutting machine. The four factors that affect the cutting accuracy of a laser cutting machine are the size of the laser agglomeration of the laser generator. If the spot is very small after the gathering, the cutting accuracy is very high, if the gap after cutting is also very small. It shows that the precision of 300mw laser pointer cutting machine is very high, the quality is very high. But the laser beam emitted by the laser cone, so cut out the gap is also cone. Under such conditions, the greater the thickness of the workpiece, the accuracy will be lower, so the greater the gap.

Accuracy of the workbench. If the precision of the table is very high, the accuracy of the cutting is improved. So the precision of the workbench is also a very important factor in measuring the accuracy of the laser generator. The laser beam is condensed into a cone. When cutting, the laser beam is tapered down, then if the thickness of the workpiece is very large cutting, cutting the accuracy will be reduced, then cut out the gap will be very large. Cutting the different materials, will also affect the accuracy of 100mw laser pointer cutting machine. In the same circumstances, cutting stainless steel and cutting aluminum its accuracy will be very different, stainless steel cutting accuracy will be higher, and the section will be smooth.

Aug 25 '17 · 0 comments · Tags: green laser pointer

In this study, a cadmium sulfide (CdS) line with a diameter of 204 nm and a length of 15 μm was used as the core design of the optical cavity (Fig. 1). The high refractive index of the nanowires causes the incident light to have a high reflectivity factor at the end face and be guided by the nanowires. This arrangement forms the Fabry-Burrow cavity, which, when activated by an external light source, forms a laser. The laser wavelength thus formed depends on the refractive index around it. By measuring the wavelength of the most powerful laser output, the refractive index of the liquid immersed in the nanowires can be determined.

There are a variety of methods for surface nanocrystallization of materials. There are a large number of surface nanocrystallization technologies. It is a surface layer which can realize the nano-characteristics by means of laser surface treatment technology and nanometer technology. It can be collectively referred to as laser surface nanocrystallization technology; More generally referred to as laser nano-surface engineering technology, is directly or mainly the use of laser this specific technical means to directly change or add material to change the surface of the solid material is treated, the composition or structure, so that the formation of nano-crystal Grain or a certain nanoparticle composition of the surface layer. Or the use of laser etching, laser embossing, laser hair, laser micro-nano modeling and other means to achieve nano-structure on the surface of the material.

red laser pointer

In the 1970s, after the successful development of high-power lasers, blue laser pointer surface treatment technology into the practical application, and then the rapid development, there have been laser quenching (laser phase hardening surface modification technology), laser remelting, laser surface alloying, Laser cladding, laser surface amorphization and laser shock enhancement. These laser surface treatment technology through the surface of the material to form a certain thickness of the treatment layer to improve the mechanical properties of the material surface, metallurgical properties, physical properties, thereby enhancing the parts, the workpiece wear, corrosion resistance, fatigue and other properties. Laser due to high power density, good direction, energy transfer convenience, can be transmitted in a variety of transparent media and other characteristics.

Generally refers to the use of laser remelting, high-energy 300mw laser pointer surface melting and not add any other ingredients to the substrate surface rapid melting and solidification grain refinement, eliminate defects, reach the aim of improving the surface structure. Laser remelting as a kind of surface engineering technology, a large number of researchers have done related research work, pointed out that the research can significantly improve the surface hardness and corrosion resistance of the material and wear properties by laser remelting, but as the surface of nanometer technology is not clearly separate.

Aug 18 '17 · 0 comments · Tags: laser pointer

Laser cladding, also known as laser cladding or laser cladding, laser irradiation and laser remelting, are directly treated with matrix material without the addition of other materials, but laser cladding is achieved by adding a clad material to the substrate surface and using high Energy density of the blue laser pointer beam, so that with the substrate surface layer of the method of melting together, in the formation of the base layer with its metallurgical combination of filler cladding.

Laser cladding surface nano-technology can be divided into three main aspects, the first aspect is the use of similar laser remelting surface nano-method, take appropriate measures directly in the laser cladding process to make the deposited layer of nanocrystalline structure. There are two types of this method, one is the melting material and the substrate composition is basically unchanged, the formation of laser cladding pool and the formation of cooling to the main physical process, this method is currently relatively rare literature. The other is in the laser cladding process between the melt and the substrate, or between the welding material and the deposition of chemical reaction between the formation of nano-particles or nano-size organization.

Laser shock peening (LSP) is a kind of high and new technology to improve the fatigue, wear resistance and corrosion resistance of metal materials by using plasma shock wave produced by most powerful laser beams. The impact of laser surface nanocrystallization technology as shown in Figure 6, when the short pulse (NS) high power density (GW/cm2) of the laser irradiation to the metal surface absorption layer, absorbing layer to absorb laser energy explosive vaporization, high pressure (GPa) plasma, the plasma is constrained layer constraint, produce high impact wave effect on the metal surface and to the internal communication, the formation of dislocation structure dense and stable on the surface of the material, plastic deformation by dislocation slip, and the shock wave at the grain boundary reflection and refraction, the shock wave in multi direction effect on grain, thus the complexity of the dislocation slip, agglomeration and annihilation after the formation of new grain boundary, sub grain formation and smaller nanocrystals.

red laser pointer

Researchers at the University of Rochester in New York have developed an extraordinary new surface material by bombarding ordinary metals with femtosecond 300mw laser pointer pulses, which can effectively absorb light, water and self-purification. Through the super-laser pulse in the metal surface etching a large number of naked eye, such as pits, beads and fine lines and other "traces", these traces of the formation of dense distribution and uneven nano-microstructure. This nanostructure fundamentally changes the optical properties and wetting properties of the metal surface.

The application of surface treatment technology has a long history, but the surface engineering technology from concept to become a complete system of time subject to, but now only a few decades, laser surface nanocrystallization technology of laser technology and nanotechnology and surface engineering technology combined or can also be called laser nano surface engineering technology.

Although the use of a variety of laser surface treatment technology, such as laser irradiation, laser remelting, laser cladding and 100mw laser pointer shock, has a lot of research materials and achieved fruitful results, but specifically targeted for the use of these technologies, The research on surface nanocrystallization is still relatively small and not systematic, and the development of nano-patterning of laser surface is still in the early stage, so there is still a lot of research work in this field.

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Aug 14 '17 · 0 comments · Tags: green laser pointer, laser

White light laser light source, short-wave laser light source and super-continuous laser light source compared to ordinary white light source (such as sunlight, incandescent, white LED lights, etc.), with high brightness, peak power, frequency coverage and other advantages, Research, defense, military, lighting, communication technology, information technology, industrial production, biomedical, environmental testing and other fields have a wide range of practical application value, received a strong concern.


White laser pointer as a new laser light source, with good direction, high energy density, super continuous spectrum, great bandwidth, flexible and diverse center wavelength, a high degree of time and space coherence and other advantages, Greatly expand the function and application of laser technology. White light laser or solar laser is completely coherent light of time and space, not only the laser beam is highly collimated, does not diverge, but also can focus on the very small area; between different colors and phase completely locked, by regulating these amplitudes and phases, can be arbitrary To change the time of the laser pulse shape, resulting in a very short pulse width (femtosecond and sub-femtosecond) laser pulse. Such a solar laser would have the potential to achieve the dual effects of focusing and convergence of light energy on time and space, releasing energy in tiny regions and extremely short periods of time, resulting in extremely high instantaneous power densities.


Laser has been widely used in basic scientific research, including physics, chemistry and materials science in many areas, need to laser and material interaction, to obtain the microscopic world of material information to understand the atomic, molecular and solid, liquid and other materials Material state and attributes, so as to achieve the goal of understanding and applying the microscopic world. Unlike conventional conventional lasers, white lasers have supercontinuum, ultra-wideband, completely coherent properties that make them play an important and irreplaceable role in many areas where ordinary blue laser pointer power can not be achieved. This application focuses on many domestic and foreign research universities and research institutions, economic and social benefits is very impressive.


Like ordinary lasers, white lasers can also be used in life science research and biomedical diagnosis and treatment. For example, as precision spectroscopy, ultrafast dynamic detection, confocal microscopy, flow cytometry and other technologies used in protein macromolecules physiological function of the study, the use of optical coherence tomography, Raman spectroscopy, nonlinear spectroscopy As a biomedical disease diagnostic tool; also as an increasingly popular tool for laser beauty, laser medicine, light and heat treatment. As a supercontinuum, ultra-wideband, the center wavelength adjustable white laser pen in many areas have a unique advantage.


purple laser pointer


Laser is both a carrier of information and a carrier of energy. Both features can be found in the defense and military areas of many applications. As a carrier of energy, lasers can be used in the manufacture of active infrared imaging and night vision, and can also be used as laser weapons with high directional energy for laser confrontation. In addition, you can use the principle of photoelectric effect, the use of small and medium energy laser on the enemy's satellites, missiles, aircraft and other flying objects sensitive components of green laser pointer damage and damage, in order to achieve the purpose of destroying enemy military targets. In this respect, ultra-continuous, ultra-wideband, high-power white laser has a unique advantage, because its photoelectric effect frequency window is huge, it is easy to a variety of optical sensitive devices (usually a kind of optical device has a sensitive wavelength) And chemical reactions. In addition, the white laser peak power is huge, and when the interaction with the optical sensitive devices resonate, will have a huge damage effect. This technique is particularly suitable for interference and destruction of enemy satellites.


Laser holography is a technique that uses a wide range of information to record and reproduce the shape of an object. The principle is to use the laser interference effect, in principle, to record all the information of the object (visual and dark information (ie, reflected amplitude information) and phase information ). The typical application is laser anti-fake and laser scanner (ultrasonic bar code used), ordinary holographic film using monochromatic laser to produce holographic stripes, if you can use color red laser pointer or white laser to produce holographic interference fringes, in principle, not only can reflect the object Contour information, and can reflect the color information. This is a true object of all-round information recording and reproduction technology. The technology not only greatly improved the amount of information contained in the holographic film, improve the reliability of laser anti-counterfeiting, increase the difficulty of information is cracked, and can truly reproduce the three-dimensional information and color information.

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http://blog.htpow.com/2017/08/03/nominal-ocular-dazzle-distance/

Aug 7 '17 · 0 comments · Tags: laser