The special screw is a high-viscosity non-crystalline plastic with poor fluidity. It is easily degraded when heated for a long time. It has a large feeding torque, difficult to melt, and is easy to block. It requires high material temperature and high pressure injection. The material temperature adj... Read More
Flame hardened surface or high frequency brittle hard Surface hardening is a convenient processing method for cheap noodles. The hardness after quenching can reach about HRC55, and the quenching depth can reach 2–3mm. When flame hardening is used, the screw material can be 40Cr or 45 steel, so it is... Read More
In recent years, due to the increase of the screw speed and the increase of the pressure in the barrel, it is mainly due to the addition of a large amount of filler during extrusion, which makes the wear resistance of the screw and barrel made of nitride steel appear to be relatively insufficient. I... Read More
The extruder screw and alloy barrel are the soul parts of the extruder, and their combination is related to the working quality of the extruder, the plasticizing capacity of the material, and the production efficiency. Therefore, when the screw and barrel of the extruder are severely worn, it will a... Read More
1. Look at the production process.High-quality screws need to go through multiple heat treatment processes, such as: quenching and tempering, tempering, qualitative, nitriding, etc., in order to meet the requirements of the screw. 2. Look at the R&D capabilities of the manufacturer. Companies wi... Read More
