In the PVC extrusion industry, screw breakage is a common issue that severely impacts production efficiency and product quality. Screw breakage is typically categorized into normal wear breakage and abnormal breakage. Below is an analysis of the causes of these two types of breakage and preventive measures: 1.Screw Processing and Materials **Material Selection** – Barrel Material: Commonly used materials include Cr12MoV (SKD61 alloy steel) and 38CrMoAlA. – Screw Material: 38CrMoAlA is typically chosen. **Heat Treatment Process** – Barrel: Tempering is

With the improvement of the production and processing technology of twin-screw extruders, they not only need to perform tasks such as feeding and plasticizing, but also have some requirements for dehydration, drying, etc. In order to better meet the different needs of users, twin-screw extruders must continuously improve their work efficiency and find ways to improve the quality of the manufactured products. So, how should we do it? Here are specific methods to improve production efficiency and product quality! How

1、 The material selection for the barrel screw is 38CrMoAlA, and the structural characteristics of several types of barrel screws are introduced as follows: Differences in conventional, low filler, and high filler structures (1) Geometric shapes and pairing relationships of screw edges and grooves Low CaCO3 content: larger between screw flights High CaCO3 content: The gap between the screw flights should be small, with the aim of improving shear force and increasing plasticization (2) The role of each regional segment.

Best wishes to my friends, the Dragon Boat Festival happy to be joyful! ——Ningbo Superior Machinery Team  

International Plastics and Rubber Industry Exhibition will be held in COLOMBIA from  23st September to 27th September Superior Machinery will participate in this exhibition. Booth No.:2512B We look forward to meeting you there. ——Ningbo Superior Machinery Team

International Plastics and Rubber Industry Exhibition will be held in Shenzhen, China from April 15th to April 18th. Superior Machinery will participate in this exhibition. Booth No.:9B33 We look forward to meeting you there. ——Ningbo Superior Machinery Team  

International Plastics and Rubber Industry Exhibition will be held in Shanghai, China from April 23th to April 26th. Superior Machinery will participate in this exhibition. Booth No.:4.1B25 We look forward to meeting you there. ——Ningbo Superior Machinery Team

The dragon is a symbol of power, strength, and good luck in Chinese culture. May your family be blessed with happiness and harmony throughout the year. Happy Chinese New Year! from  SUPERIOR team

May the new year bring you peace, joy, and success in all your endeavors. Happy New Year 2025! –Ningbo Superior Machinery Team