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Common materials for screws
19-07-2019
At present, the screw materials commonly used in China are 45 steel, 40Cr, ammoniated steel, 38CrMOAl, and high temperature alloy. 1) No. 45 steel is cheap and has good processing performance, but has poor wear resistanc...
Energy consumption and its distribution of solid transfer theory in double alloy screw design
13-07-2019
The power consumed by the solids transport section is relatively large. In some cases, the solid transport consumes about 60% of the power consumed by the entire twin alloy screw. In order to make the relationship of der...
Segmentation of the screw
05-07-2019
The screw is generally divided into five sections: conveying section, melting section, mixing section, exhaust section and homogenization section. (1) Conveying section, conveying materials to prevent flashing. (2) The ...
Screw material requirements and heat treatment
29-06-2019
It can be known from the extrusion process that the screw is at high temperature, corroded, and strongly worn. Therefore, the screw must: 1) High temperature resistance, no deformation under high temperature; 2) wear res...
The role of screw back pressure in injection molding machine
21-06-2019
The back pressure ensures that the screw can generate enough mechanical energy to melt and mix the plastic during the rotary reset. The back pressure also has the following applications. 1 Discharge volatile gases, inc...
Comparison of Conical Twin Screw Extrusion Performance
15-06-2019
In order to provide theoretical basis and technical support for the design and actual machining of the same-direction conical twin-screw, numerical simulation of the same direction and anisotropy using the POLYFLOW softw...