Commonly used on the market with 45 steel screw, 40Cr steel (chrome), 38CrMoAIA nitriding steel. If your product is + glass fiber. With chrome when about 3 months will slowly fall off, the color difference. The best choice Nitriding. Stainless steel screw can not do + glass fiber. Generally non-special materials are used more common screw. Such as PC \ PMMA \ PA and other materials. Screw compression section must be long. Sudden deformation of the screw is generally used to produce Crystalline plastic long compression section of the material melting and the effect is very good.And small shear will not lead to local temperature is too high.And the head of the rocket is also very important.

Dual-alloy screw material is made of high-quality SACM645 alloy steel as the base material, and the top of the thread is welded and welded into the bimetallic layer. The bimetallic material barrel is made of high-quality 38CrMoALA as a base material and quenched and tempered; Screw barrel: with wear-resistant, corrosion-resistant, high temperature, high pressure, suitable for, lenses, transparent shell, cosmetics containers, transparent acrylic, nylon, PVC, PC, PPA, ABS fireproof, bakelite, PC + glass fiber, nylon + glass fiber, magnetic powder, ceramic powder, aluminum-magnesium powder, iron powder, electric injection molding machine, but also according to user requirements processing products designed to customize.