The operation content of the extruder maintenance and maintenance is the operation procedure rules and operation precautions in the extruder production operation, and the operator must be carefully executed.

The extruder can be maintained at regular intervals according to the load and working time of the extruder. Generally, it can be carried out once every six months or one year. When the maintenance is maintained, the repair fitter and the equipment operator work together. The contents of the work are as follows.

1 Clean and scrub the oil on all parts of the extruder and the dust in the electric control box.

2 Disassemble the gear transmission reducer and bearing gland, check the wear condition of each transmission piece; observe the change of the quality of the lubricating oil and make up the amount of oil in time; if the oil contains more impurities, it should be filtered or replaced.

3 The worn gears should be mapped, and the bearings should be marked with standards. After the operation, a spare parts production or procurement plan should be proposed, and the organization should be repaired and replaced at any time.

4 Check the wear condition of the V-belt and adjust the base distance of the V-belt equipment (maintaining the V-belt drive operation is important and appropriate); if the V-belt wear is severe, it should be replaced.

5 Check the wear condition of the screw tube. There are slight scratches and friction marks on the inner and outer surfaces of the barrel and the outer thread of the screw thread. It can be ground with fine oil stone or fine sand cloth to achieve smooth and smooth, and the working surface of the barrel and screw (the inner diameter of the barrel and the outer diameter of the screw) are recorded. Measured scale.

6 Detecting and proofing the actual temperature of the barrel heating (measured by the mercury thermometer) and the temperature error value of the instrument to ensure accurate control of the operating temperature of the extruder.

7 Adjust and test each safety alarm device to ensure the reliability and accuracy of its operation.

8 Check and test whether the various infusion lines (water, gas and lubricating oil) are unclear, and repair and dredge the leaking and blocking parts.

9 Check and test whether the connection of each power transmission line is strong, and whether the safety grounding maintenance of the electric control box and equipment is strong.

10 Inspection, experimental heating equipment, cooling fan and safety cover work orientation is not accurate, make necessary conditioning corrections to ensure that they can work accurately and efficiently.

dumping margins of 16.74 per cent and 119.87 respectively.