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.

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

Time flies, we are stepping to usher in the New Year. Thank you for your trust throughout the year, we keep the commitment to support our clients with high-level and high-precision products to meet their needs in the coming year. Happy 2024!

Principles of Selection of Plasticizing Barrel Assembly and Design of Injection Molding Nozzle Components Considerations: Conveying section, compression section, metering section, three-section ratio, compression ratio, depth of metering section screw groove, length-diameter ratio, number of teeth. Selection principles a.For good mixing effect, a design with a large length-diameter ratio, more teeth, high compression ratio, and shallow metering section screw groove should be used, such as PA, PE, PP, and POM. b.To prevent shear overheating, a design with a small length-diameter

Main factors affecting plasticizing quality The main factors affecting plasticizing quality are: length-to-diameter ratio, compression ratio, back pressure, screw speed, and barrel heating temperature, etc. Length-to-diameter ratio: the ratio of the effective working length of the screw to the diameter of the screw. a.A larger length-to-diameter ratio makes feeding more uniform; b.Plastics with better thermal stability can use longer screws to improve compounding without burning, while plastics with poor thermal stability can use shorter screws or screws without threads at

Several important geometric parameters of screws Screw diameter (D) a.Related to the required injection volume Ejection volume=1/4 × π × D ²× S (ejection stroke) × 0.85 b.Generally speaking, the diameter D of the screw is inversely proportional to the maximum injection pressure and directly proportional to the plasticizing ability. Conveying section a. Responsible for the transportation, extrusion, and preheating of plastics, ensuring preheating to the melting point; b.Crystalline plastics should be longer (such as POM, PA), followed by amorphous

The main part of the pin screw is a common screw, and the locking pin can be set in the groove of the melting section or metering section of the screw, or on the smooth cylindrical surface at the end of the metering section without a screw groove. The locking pins are arranged in a certain way with varying density and quantity. The cylindrical locking pins are assembled into the holes of the screw, while the square or diamond-shaped locking

The 35th International Plastics and Rubber Industry Exhibition will be held in Shenzhen, China from April 17th to April 20th. Superior Machinery will participate in this exhibition. Booth No.: 9Y59 (Hall 9) We look forward to meeting you there. ——Ningbo Superior Machinery Team