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The production of die-casting parts requires die-casting machinery and equipment. Die-casting machines are the basis for the production of die-casting parts. The technical level of die-casting equipment determines the quality and level of die-casting parts. Therefore, if you want to promote the development of the die-casting parts industry, quality die casting，you must give priority to the development of die-casting parts. equipment.
China is a big country in die casting, but it needs to be improved in terms of production technology and industry equipment.
China's Twelfth Five-Year Plan clearly states that the main task for the development of the foundry industry is to give priority to the development of major technical equipment, including "large-tonnage die-casting machine casting units", and the goal is to provide equipment support for die-casting enterprises' technological upgrading.
The development of die-casting technology and equipment will help improve the level of die-casting machinery and equipment, thereby improving the quality and technical level of castings, and promoting the development of the casting industry.
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In order to give full play to the role of CNC machine tools, reduce the occurrence of failures, and extend the life of the machine tools, the key to the maintenance of CNC machine tools is to strengthen daily maintenance. cnc machine service，The main maintenance tasks include daily inspection, weekly inspection, and monthly inspection.
Wipe the exposed parts of the screw and guide rail of the machine tool, and wash away dirt and chips with light oil
Wipe the surrounding area of all exposed limit switches, carefully wipe the gears, racks, connecting rods and detection heads of each sensor
Check the lubricating oil tank, hydraulic oil tank, oil pressure, oil temperature, and oil volume of oil mist.
Increase the temperature of the electrical system and hydraulic system for at least 10 minutes, check whether the parameters are normal, whether the air pressure is normal, and whether there is leakage
Dry running, so that all moving parts are fully lubricated to prevent jamming
Check the indexing and positioning of the tool post.
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Memory foam mattresses are still very good for children. Memory foam was invented by the Kangren company under NASA. It was first used as aerospace materials to reduce pressure on the human body and prevent collisions. Later, it was widely used in civilian adult sleep products, which has a good effect of reducing stress and can sleep in a comfortable environment. It is also a good choice for children's mattresses.
The three basics of buying children’s mattresses must be understood:memory foam mattress sale
1. Good support; the child's body is growing all the time, and different ages need different support for the spine;
2. Environmental protection: Children's immunity is much worse than that of adults. You must pay attention to environmental protection and safety issues, otherwise it will not be worth the loss to cause unnecessary physical and sleep damage to the child!
3. Breathability: The child sleeps for a long time, and 70% of the body fluid is discharged during sleep. The airtightness is easy to breed bacteria and mites, which will cause the child to feel nauseous!
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The pure silicone raw material itself is non-toxic and tasteless, but after vulcanization and high temperature molding, the silicone products made under normal circumstances will have a little odor. This is normal, and it should be left for two or three days under natural ventilation. , The smell will disappear naturally without affecting the quality of silicone products. Since the pure silicone material is odorless, how did this little smell come from?
The raw material of silica gel is transparent and odorless, but after adding color masterbatch and vulcanizing agent, it is molded by hydraulic press at high temperature. In this process, a little odor will be generated, but this odor does not affect the quality of the product, and it can be self-made.custom silicone mold manufacturer Eliminated. But if the smell of the silicone product is unusually pungent, you need to pay attention to it. It may be that the silicone product factory has used unqualified silicone raw materials or vulcanizing agents.
If you choose silicone products, you need to look for a big factory. The procurement process is guaranteed to ensure that the raw materials are 100% qualified, the production process is controlled to prevent the occurrence of abnormal situations, and the shipment is inspected to prevent defective products from flowing into customers. Silicone rubber product wholesalers choose 100% environmentally friendly silicone raw materials to ensure the quality of silicone products. At the same time, they purchase odorless vulcanizing agents. 8S strictly controls the production environment. Most silicone product manufacturers consider it inevitable and do not affect product quality. The little smell is also eliminated, giving customers truly environmentally friendly, non-toxic and odorless silicone products.
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After choosing the goggles and preparing the track, the driver should bring another set of items. The tear-off is a film intended to cover the actual lens of the goggles. If most riders live in damp mud, or their lenses are covered with dust, water or mud, they will be torn off 2-6 times per race. The tear off requires stickers on each side of the goggles. The advantage of the tear-off system is that it can cover the entire goggles, thus providing a clear vision. The second type of goggles system is called roll-off. Unlike the torn-off objects, the dropped objects are stored in two carbon canisters on both sides of the goggles, one for cleaning the film and the other for the used film. Although there are more rolls per pack than tears, they can only remove about 1 1/2 inches of strips along the center of the goggles. Many riders did not notice it, but some insisted that the entire lens must be clean. motocross gogglesThese items will greatly improve your vision on the track and are indispensable for all racers.
When buying goggles, it is important to ensure that they are the right size and shape. The size of the goggles is usually marked on the package, that is, medium, large, youth, etc. Please make sure that the size of the selected goggles is compatible with the helmet! Some helmets cannot accommodate large-size helmets, so be sure to check the helmet opening carefully before purchasing. As mentioned above, goggles with a leg system will greatly improve the fit and make it hinged around the helmet to ensure a tight seal around the face.
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Sleep is a non-negligible part of life. A good mattress not only enables you to have a comfortable sleep, but is also good for your own body. The following eight methods for mattress maintenance are recommended.
1. Regularly adjust the direction: After the newly purchased mattress starts to be used, the front and back and the top and bottom flip movements are required every three months for the first year to make each part of the mattress evenly stressed and increase the service life of the mattress;
2. Maintain air circulation: In order to ensure that the inner material of the mattress is not damp, and to increase the comfort of the mattress, air circulation must be maintained in the room where the mattress is used;
3. Avoid single-point jumping or fixed-point pressure on the mattress, avoid standing on the mattress, or single-point jump or fixed-point pressure. This will cause uneven stress on the mattress, and avoid sitting for a long time. Edge, and shorten the life span of the mattress;
4. Do not use water to clean the mattress: In case of liquid pours and penetrates into the inner layer of the mattress, do not clean it with water. You should immediately squeeze it with a strong hygroscopic rag until it is absorbed, and then use a hair dryer with cold and warm air (hot air is strictly prohibited) Or blow it dry with an electric fan. original mattress factory In addition, do not use dry cleaning fluid to clean the bed surface, which may damage the cloth surface;
5. Do not smoke on the bed or place the mattress near the flame;
6. Use cleaning pad: In order to ensure the hygienic degree of the mattress, cover the cleaning pad before covering the sheets;
7. Matching of upper and lower cushions: Do not put a board between the upper and lower cushions or put the upper cushion on an old mattress that has been damaged. You can purchase matching lower cushions to extend the life of the new mattress and sleep comfort. , The surface of the mattress is contaminated, and it can be scrubbed with alcohol in time;
8. Careful handling: When handling, place the mattress on an upright surface and do not bend or fold. This will damage the frame of the mattress and cause the mattress to distort.
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In the summer, many people will choose to wear sunglasses. When buying sunglasses, do not only pay attention to whether they are fashionable or not. Different types of lenses are also important points that cannot be ignored.sunglasses customDifferent types have different effects. So what are the types of sunglasses?
Here are some common lenses
1: Polarized lenses
The term polarized light is used a lot in sunglasses, but many people do not understand the specific meaning. In fact, this kind of lens is used to filter the glare from the sun in equal directions, and a special vertical coating is added to the lens. It is very suitable for outdoor sports (such as marine activities, skiing or fishing).
2: Color changing lens
Another name is "photosensitive lens". Originally transparent and colorless lenses, when exposed to strong light, they will become colored lenses to protect the eyes. This is because silver halide chemicals are added to this type of lens, so it needs to be used indoors and outdoors at the same time. , It is very suitable.
3: Anti-reflective protective lens
This kind of lens can prevent the reflection of strong light, allowing you to see things undisturbed under strong light, and more clearly. The principle of this kind of lens is actually very simple, that is, a layer of magnesium fluoride is coated on the surface. If you want to know whether your sunglasses are anti-reflective protective lenses, you can point your glasses at the light source. When you see purple or green reflections, it means that there is an anti-reflective protective film on the lenses.
4: Colored lenses
This kind of lens is also called "tinted lens." Sunglasses using this kind of lens can absorb light of a specific wavelength. The principle is to add some chemicals in the lens manufacturing process to make the lens appear colorful. This kind of lens is most commonly used in sunglasses.
5: Painted lenses
The effect of this kind of lens is actually the same as that of a colored lens, but this kind of lens is generally used in sunglasses with power. The most familiar one is the "graded colored lens", the color is from top to bottom. From deep to shallow.
Finally, when you buy sunglasses, in addition to looking at the corresponding types, you must also pay attention to the material selection of the glasses. Generally, spectacle lenses are divided into resin, glass and crystal. Both lenses and frames should have a shelf life. It is also important to read the product quality inspection certificate, the name of the manufacturer, and the address of the purchased glasses. At the same time, you must ask for the purchase invoice. In the event of a quality problem, you can protect your legitimate rights and interests.
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1. Pay attention to the labeling of product performance indicators
When buying earphones, pay attention to the performance indicators on the earphone packaging or manuals, because poor-quality earphones are often produced by small factories, and some of their performance indicators are randomly labeled, and some are exaggerated. Headphones generally have a low frequency range of 20-20kHz, a power greater than 100mW, and a harmonic distortion less than or slightly equal to 0.5%. If the above requirements are not met, it is recommended that you still do not buy. It is recommended not to buy a product whose performance is too high in the manual.
2. The quality of product workmanship
The more authentic earphones produced by major manufacturers usually use engineering plastics, so they have a very smooth appearance, and have a certain degree of stress and toughness; headphones with memory card hey have no harshness, fine workmanship, and no roughness of inferior plastics. In addition, the lead wire diameter of the earphone is relatively thick, which can ensure stable transmission, and the wire feels soft and hard; the plug is made very clean and neat, without leaving burrs, and the coating is smooth and even. If the above conditions are not met, it is recommended not to buy.
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LHD company provides a comprehensive assembly cable. Whether it is radio frequency cable assemblies for mass production, corrugated pipe cables for outdoor applications, laboratory test cables or high-precision test and metering cables. LHD provides customized cable assembly and adjusts the manufacturing process as needed. At the same time, LHD is committed to the research and development of new products, promoting the development and progress of assembly technology.
Automated cable assembly
Fully automatic cable assembly From the product development stage, the structural design of cable components has been carefully considered and repeatedly verified to ensure that difficulties and obstacles are cleared for the automation team.custom cable assembly
The conceptual stage of product development defines all steps from engineering design to fully automated assembly machines.
Manual cable assembly
Manual assembly requires understanding and mastering every detail step in the entire assembly process, which is also a prerequisite for partial and fully automated assembly. LHD's reasonable layout of cable assembly methods can meet the needs of all products from a single cable to large-scale production.
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Did you know that almost all gadgets or electronic devices you use in your daily life have a common basic element? Almost any electrical system, as well as your computer, laptop, smart phone, network game console, microwave oven, TV, dishwasher, etc., will not work properly without PCB assembly. So, what is PCB assembly?
With an increasing number of companies in China seeking to expand their customer base and compete in international markets, particularly the high-growth industries in the Asia Pacific and beyond, offering a complete range of Pcb assembly service in China will provide a vital edge over local competitors.
What does PCB structure mean? PCB assembly refers to the process of soldering and assembling electronic components, pads and manufacturing printed circuit boards (PCBs) on prefabricated parts. Professional production machinery is usually used for mass production. The printed circuit board assembly process is commonly referred to as PCBA.
The difference between PCB and PCBA
PCB refers to the empty circuit table. In this state, the circuit meter does not contain any electronic digital components and looks similar to an environmentally friendly slate with split outlines and spots. Therefore, unless of course, the PCB itself cannot be used for work until the complete construction is completed.
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