1. Daily maintenance
Cleaning and lubrication: Regularly clean the residual material on the surface of the screw to prevent the material from coking or corroding the screw. At the same time, ensure that the screw is well lubricated to reduce friction and wear.
Check fasteners: Regularly check the fastening of the screw and related parts to prevent abnormal wear caused by loosening.
Prevent idling: The screw is not allowed to idle for a long time to avoid screw and barrel rolling. It should run at low speed when starting, and then gradually increase the speed after checking that there is no abnormality.
Material management: Ensure that there are no hard impurities such as metal, sand and gravel in the material entering the hopper to prevent damage to the screw.
2. Regular maintenance
Disassembly and inspection: Regularly disassemble the screw for inspection and evaluate the wear. If the wear is severe, thermal spraying of wear-resistant alloy or surfacing can be used for repair.
Replace wearing parts: Regularly replace the reducer lubricating oil and check the wear of wearing parts such as gears and bearings.
Cooling system maintenance: Regularly check whether the cooling water channel is unobstructed to prevent scale clogging and overheating of the screw.
3. Operating specifications
Temperature control: Ensure that the temperature of the screw and barrel is set reasonably to avoid material decomposition or poor plasticization due to excessively high or low temperatures.
Startup and shutdown: Preheat to the process temperature before startup and keep warm for a period of time (usually 1-2 hours). The surface of the screw needs to be cleaned when shutting down.
Abnormal handling: If abnormal sounds or current fluctuations are found during operation, the machine should be stopped and checked immediately.
4. Material and process management
Use high-quality materials: Select wear-resistant and corrosion-resistant screw materials (such as powder steel) to significantly extend the life of the screw.
Optimize process parameters: Reasonably adjust the screw speed, temperature and pressure according to production needs to avoid excessive wear.
5. Long-term storage and protection
Rust prevention measures: When idle for a long time, the screw should be coated with anti-rust grease, hung or stored in a special wooden box.
Record maintenance: Record the content of each maintenance and inspection in detail to facilitate tracking of the service life of the screw.
