What is the reason for the unstable and intermittent discharge of the extruder?
Date: 2024-07-08
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During the extrusion process of the extruder, unstable discharge and intermittent material are common problems. The main reason why the material cannot be extruded is related to the unreasonable temperature control of the barrel screw and the flow rate of the molten material not meeting the requirements. Reducing the flow rate of the screw cooling water can increase the temperature of the cooling water;






1. The blockage of the splitter plate and filter screen causes excessive resistance to material movement, greatly reducing the axial movement speed of the material in the screw groove, and also causing the phenomenon of no discharge


2. The temperature control of the barrel and screw of the extruder is unreasonable, neither too high nor too low. If the temperature of the barrel is too high, the material in contact with the barrel will melt, which can easily cause the material to overheat and decompose. If the screw temperature is too low, it will cause the material to slip and not discharge from the barrel.


The main solution to the above problems is to reduce the temperature of the machine barrel; Reduce the flow rate of screw cooling water and increase the temperature of cooling water; Regularly clean and replace the splitter plate and filter screen.


The precision, stability, and workability requirements for temperature control are becoming increasingly high in the molding and adjustment of lattice machines. On one hand, it is required that extruder manufacturers design their extruders scientifically and reasonably, and in addition, the use of precise and advanced temperature control systems is also necessary. Shiyan Machinery adopts a high-quality temperature control system, which can accurately control the temperature at+0.2 ° C, providing a prerequisite for good extrusion molding.


WorldResearch Machinery reminds that stable temperature control improves the physical properties of the material extruded by the extruder, which is more effective for linear high-density polyZ-ene materials.

Category: Industry News
Author: 世研
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