[China Aluminum Network] The production of aluminum alloy wheels mainly uses casting and forging technologies. Foundry Low-pressure casting is a more basic method of producing aluminum wheels and is also more economical. Low pressure casting is to mold and harden molten metal in a mold. Back pressure casting is a more advanced method of casting. It uses a very strong vacuum to suck metal into the mold, which is conducive to maintaining the constant temperature and eliminating impurities. There is no air hole in the casting and the density is even and the strength is high. The aluminium wheels produced by the HCM process are almost the same as the forged ones. The RX/RY (15-20 inch) series aluminum wheels of the German BBS are cast using the HCM method. forging Forging is a more advanced method of manufacturing aluminum wheels, compressing an aluminum ingot into a wheel hub with a pressure of 62.3 MN. This aluminum hub is three times stronger than the average aluminum hub, and the former is 20% lighter than the latter. Some well-designed and relatively complex wheels are often impossible to forge once. Roll forging (also called forging) is a type of forging, in which a blank of a hub is forged in a rolling form. Rolled-out hubs, while maintaining sufficient strength, can significantly reduce thickness. The aluminum alloy wheel manufactured by this technology not only has a uniform density, a smooth surface, a thin wall, a light weight, but also can withstand greater pressure. However, because this product requires more sophisticated production equipment and the yield is only 50%-60%, the manufacturing cost is slightly higher and the price is naturally not low. SMD LED 3528 Smd Led Lights,Smd Lamp Beads 5050,Uv Lamp Beads 0802,High Power Led Lights Dongguan XINYUDA Technology Co., Ltd. , https://www.gdxige.com
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First, let's understand the concept of LED and SMD.
LED (Light Emitting Diode) is a light-emitting diode, there are many kinds, one of which is SMD LED. Others such as in-line LED, piranha, high-power LED and so on. The LEDs packaged in SMD form are divided into several types such as CHIP, TOP, and SIDEVIEW.
Aluminum alloy hub production technology