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
Cleaning method of barrel screw of bakelite machine barrel screw cleaning method: (1) Use barrel cleaner If the raw materials used for injection products are changed more frequently or the plasticizing temperature range of the residual materials in the bakelite machine barrel is quite different from the refueling, in order to save raw materials and improve working efficiency, i
Composition and design principle of reciprocating pin barrel screw Reciprocating pin barrel screw is mainly composed of motor, rotating system, feeding system, extrusion system, second-stage extruder or high temperature melt pump system. Other auxiliary devices include cooling, heating, lubrication systems, vacuum systems, and electronic control systems. Reciprocating pin barrel design p
What is the effect of excessive clearance between screw and barrel? Influence of excessive gap between screw and barrel: 1. The gap between the screw and the barrel is too large, and the flow rate of the molten material during extrusion is unstable, and the product surface is prone to horizontal wrinkles. 2. The gap is too large, the extrusion melt pressure is unstable, so that the c
Reasons for maintenance of barrel screw of cone double extruder The barrel screw of the cone double extruder has its unique large feeding area, large compression ratio, the shear and mixing efficiency of the screw in the longitudinal and transverse directions of the material is higher, and the plasticizing ability is more excellent, so it is especially suitable for High calcium filled PVC powde
