Maintenance method of barrel screw
Maintenance method of barrel screwMaintenance methods of barrel screw are mainly the following eight kinds:
1. Avoid screw idling, slipping and other phenomena;
2. Avoid mixing POM and PVC into the barrel at the same time, the reaction will occur at the melting temperature and cause serious industrial accidents;
3. To prevent foreign objects from falling into the barrel and damage the screw and barrel. Prevent metal fragments and debris from falling into the hopper. If processing recycled materials, a magnetic hopper needs to be added to prevent iron filings from entering the barrel;
4. Do not start the machine when the barrel has not reached the preset temperature. Newly opened electric heating generally requires the temperature to reach the set value 30 minutes before operating the screw;
5. Make sure that the plastic in the barrel is completely melted when using salivation, so as not to damage the transmission system parts when the screw moves backward;
6. When the temperature of the molten plastic is normal but the black spots or discoloration of the molten plastic are constantly found, the rubber screw check ring seat (over the rubber ring, meson) should be checked for damage;
7. Every time the machine stops for more than half an hour, it is best to close the blanking port and clean the material in the barrel, and set the insulation;
8. When using new plastic, the remaining material of the barrel should be cleaned. Use POM, PVC, PA+GF and other materials to minimize the degradation of raw materials, and rinse them with ABS and other nozzle materials in time after shutdown.
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