年表作成・共有サービス - pastport

https://www.lesunscrew.com/the-functions-of-extruder-screw.html

1. Advantages of the extruder screw
The material of the extruder screw must have the performances of high mechanical strength, withstanding huge torque and non deformation under high temperature and pressure.

The reason is that the extruder screw elements rotate in the barrel under high temperature, high pressure and large torque. Because it must force the material to move forward during rotation, and it also has to withstand strong friction and corrosion of plastic decomposition gas erosion, the extruder screw must have the advantages in these performances.

2. Common problems of the plastic extrusion screw
During the rotation of the screw of the extruder, it is mainly used to shear and plasticize the plastic and push the plastic forward, which will bear huge shear stress and friction. Due to long-term work under harsh conditions, the screw edges are worn and become smaller, and the gap with the barrel increases, which will cause the plastic extrusion volume to decrease. In severe cases, plastic reflux will occur, and the plasticizing effect will be reduced, and crystal grains will appear. Finally, the phenomenon of serious decline in production capacity.

Nanjing Lesun Screw Co.,Ltd specialize in the manufacture of parallel co-rotating modular screw elements, barrel and shaft, involving various types that lies between Ø20mm to Ø300mm. After ten years of luxuriant development, our company now owns several sets of advanced CNC machines and special processing equipment for manufacturing screw. Now our machining operation has basically realized intellectualization and automation. Advanced processing means, strong technical force and sophisticated processing craft ensure quality of each production and technical indexes can fully meet customers...