Control and operation of extrusion process
The control and operation of extruder is the most difficult in feed processing equipment. Because there are many factors affecting the quality of extruded products, they affect each other. And the effect of the results can`t be reflected immediately, but with a certain lag. If the operation is slightly improper and there is no timely adjustment, the production will not be able to proceed normally. Therefore, extruder operators must be trained. They must master the working principle and production theory of extruder. Operators need to be able to directly control and adjust the variables such as raw material composition, feed quantity, water content, temperature and pressure of the extrusion chamber and screw speed according to the changes through practical operation training, so as to ensure that the products can meet the requirements of quality standards.
First. The variables in the extrusion process
There are two main types of variables in the extrusion process:
1. The independent variables
They are given by the operator and do not change due to changes in other parameters. The independent variables that have a direct impact on the product during the extrusion process are:
(1) Composition of raw materials
2019-09-23
