How to choose the screw barrel of the granulator?How to choose the screw barrel of the granulator?
The commonly used screws on the market are 45-gauge steel, 40Cr steel (chrome-plated), 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. It is best to choose Nitriding. Stainless steel screw can not be made of glass fiber. Generally, non-special materials are more common screws. For example, PCPMMAPA and other materials. The compression section of the screw must be long. The mutant screw is generally used to produce crystalline plastics. The long compression section is very good for the melting and the material. And 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 bi-alloy screw material is made of high-quality SACM645 alloy steel as the base material, and the imported bimetal layer is welded on the top of the screw thread; the bi-metallic barrel is made of high-quality 38CrMoALA as the base material, which is subjected to quenching and tempering treatment; Screw barrel: with wear resistance, corrosion resistance, high temperature resistance, high pressure resistance, 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.
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