Commonly used screws in the market are No. 45 steel, 40 […]
Commonly used screws in the market are No. 45 steel, 40Cr steel (chrome plated), and 38CrMoAIA nitrided steel. If your product is +glass fiber. When using chrome plating, it will slowly fall off after about 3 months, and the color difference will appear. Nitriding is best. Stainless steel screw cannot be made of glass fiber. Generally, ordinary screws are used for non-special materials. Such as PC\PMMA\PA and other materials. barrel screw The compression section of the screw must be long. Abrupt screw is generally used to produce crystalline plastic. The long compression section has a good effect on the melting of the material and the effect. Moreover, the small shear will not cause the local temperature to be too high. And the rocket head of the screw head is also very important.
The material of the double alloy screw barrel is made of high-quality SACM645 alloy steel, and the top of the thread is welded with imported bimetallic layer; the bimetal barrel is made of high-quality 38CrMoALA as the base material, after quenching and tempering; the inner hole of the barrel is centrifugal cast bimetal, Double alloy screw barrel: wear-resistant, corrosion-resistant, high temperature resistant, high pressure resistant, suitable for lenses, transparent shells, cosmetic containers, transparent acrylic, nylon, PVC, PC, PPA, PPO, PPS, PA6T, LCP, ABS fireproof, Bakelite, PC+glass fiber, nylon+glass fiber, magnetic powder, ceramic powder, aluminum magnesium powder, iron powder, electric injection molding machine, etc., can also be designed and customized according to the requirements of users' processed products.