Type and design principle of injection molding machine barrel screw Type and design principle of injection molding machine screw Type of injection molding machine barrel screw: 1. Mutant Mutant screw characteristics: the compression section is short, and the energy conversion is severe during plasticization, which is mostly used for crystalline plastics such as polyolefin and
The role of barrel screw insulation The role of barrel screw heat insulation: The role of barrel screw insulation The quality of thermal insulation: Extrusion heating gas temperature: can maintain a uniform temperature, can reduce the defect rate heater life: extended twice (automatic control of heat output). The role of barrel screw insulation Insulation productivity:
Extruder screw and barrel heating and cooling methods Extruder screw barrel heating method Simple heating is widely used in resistance heating, and thermocouples are used to achieve segmented temperature control and inspection side. Resistance heating is the use of resistance to generate heat to heat the barrel, and then transfer the heat to the plastic in the barrel. Resistance heating
Material requirements and advantages of double alloy screw barrel Double alloy screw barrel Material requirements for double alloy screw barrel: The screw barrel is operated under high temperature, certain corrosion, strong wear and high torque. Therefore, the barrel screw must meet the following requirements. 1. Corrosion resistance, the material is corrosive; 2. The r
Double barrel screw parameters and material requirements The effective service life of the double barrel screw is much longer than that of the ordinary nitriding barrel, increasing the wear life. Double barrel screw Double barrel screw parameters: Adhesion strength: over 10000psi;’ Surface finish: screw surface is less than 0.04um; Surface hardness: HRC59-69 degree
What is the difference between pc screw barrel and ordinary screw barrel? PC screw barrel has the advantages of high transparency, good impact toughness, wide temperature range and so on. How to choose pc screw barrel? 1. The injection temperature must integrate the shape, size and mold structure of the product; 2. The injection pressure has a certain influence on the physi
How to control the color difference of the injection molding machine screw? How to control the color difference of the injection molding machine screw? 1. Reducing the effect of barrel temperature on color difference During production, it is often encountered that a heating ring is damaged or failed, or the heating control part is out of control and burned to form a sharp change
Protection method of twin screw barrel screw Corrosive, abrasive and high temperature resistant resin may damage the twin screw barrel screw unintentionally. For example, some engineering materials, thermoplastic elastomers and biopolymer materials sometimes form a corrosive environment. In addition, reinforcing materials (such as glass fibers, glass balls, etc.), certain fillers and additive
