The common screw in the market is No. 45 steel, 40Cr steel (chromium plating), 38CrMoAIA nitriding steel. If your product is + glass fiber, it will fall off slowly after 3 months with chromium plating. It is best to choose nitriding. The stainless steel screw can not be made of glass fiber. Generally, the non special materials are usually selected with more ordinary screw. For example, PC\PMMA\PA and other materials. The compression section of the screw must be long. The screwed screw is generally used to produce the crystalline plastic. The long compression section is very good for the melting of the material. And the small shear will not cause the local temperature to be too high. And the head of the rocket is also very important.
The double alloy screw material is made of high quality SACM645 alloy steel as base material, the top of the thread is welded with double metal layer, and the double metal barrel adopts high quality 38CrMoALA as the base material, and is tempered by quenching and tempering; the inner hole of the barrel is centrifuged to cast double metal and double alloy screw cylinder: it has wear resistance, corrosion resistance, high temperature resistance and high pressure resistance. , transparent shell, cosmetic container, transparent acrylic, nylon, nylon, PVC, PC, PPA, PPO, PPS, PA6T, LCP, ABS fire protection, electric wood, PC+ glass fiber, Nylon + glass fiber, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, electric injection molding machine, etc., also can be designed and customized according to the requirements of the user processing products.
