When a co-rotating parallel twin-screw extruder fails, these methods can be used to deal with it.
2024-10-29
The co-rotating parallel twin-screw extruder is a piece of equipment widely used in the plastic processing industry. It uses two co-rotating screws to heat and melt the plastic material, and then extrude it through the mold. This extruder is efficient and stable, and is suitable for producing various plastic products. However, you may encounter some common faults when using a co-rotating parallel twin-screw extruder. The following is a detailed description of some common faults and their solutions.
1. Temperature control issue: Temperature control is a very important part of the extrusion process. If the temperature is incorrect, it may cause the plastic to melt unevenly or overheat, affecting the quality of the extruded product. The solution is to check the settings of the temperature controller to ensure that the temperature setpoint is consistent with the actual temperature, and to check that the heater and sensor are working properly.
2. Pressure problem: The extrusion process requires a certain amount of pressure to push the plastic material through the screw and mold. If the pressure is insufficient or excessive, it may result in inaccurate product dimensions or equipment clogging. The solution is to check the settings of the pressure sensor and controller to ensure the pressure setting is correct and check that the hydraulic system is working properly.
3. Equipment blockage: Blockage is one of the common failures, which may be caused by overheating, overcooling or excessive plastic materials. The solution is to stop the machine to check the screw and barrel, clear the blockage, and adjust the temperature and speed to avoid blockage again.
4. Product quality problems: If the produced products have quality problems, such as rough surface, inaccurate dimensions, etc., it may be caused by improper parameter settings or mold damage. The solution is to check the extrusion speed, temperature and pressure settings to make sure they match the product requirements and check whether the mold needs repair or replacement.
5. Electrical failure: Its electrical system may fail, such as the motor failing to start, the control panel failing, etc. The solution is to check whether the power supply is normal, check whether the electrical connections are loose or damaged, and ensure the normal operation of the electrical components.
In short, co-rotating parallel twin-screw extruders may encounter various failures during use, but through careful inspection and correct solutions, these failures can be solved. Timely maintenance and upkeep are also key to ensuring normal operation. If you encounter complex faults or unresolved problems, it is recommended to seek help from professional technical support or maintenance personnel.