Methods to solve screw wear
Published on:
2023-03-14
1. The injection molding machine should always be in a good state of maintenance, especially the temperature control function of the plasticizing unit should be normal. To ensure this, thermocouples, thermostats, heat sinks, heat transfer pumps and heat should be checked regularly
1. The injection molding machine should always be in a good state of maintenance, especially the temperature control function of the plasticizing unit should be normal. To ensure this, thermocouples, thermostats, heat sinks, heat transfer pumps and heat exchangers should be inspected regularly and the above components should be repaired and replaced if necessary. Only when the functions of the extruder are normal and the temperature settings of each point are accurate can the high quality of the product and the long life of the screw barrel be obtained.
2. Formulations, including lubricants, need to be correctly selected and properly mixed. Avoid using too much external lubricant, especially lubricants coated with stearic acid.
3. The screw should be filled as much as possible
4. The temperature distribution should be set so that the material in the area where the exhaust hole is located reaches the required degree of plasticization, because if the density in the exhaust area is too low, the powder will be sucked out of the exhaust hole.
5. The main drive torque should be as large as possible. A large torque indicates that the extrudate is plasticized well. Even if the torque reaches 95%, it will not cause any damage to the extruder.
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