In the plastic product extrusion process, it is important for stably and continuously production, so the engineer need to solve the problems quickly when there is failure of plastic extrusion.
To quickly and accurately determine the cause of the failure of the plastic extruder, you can follow the following steps:
1. First, observe the phenomenon. Carefully check the operating conditions of the extruder, including the extrusion volume, product appearance quality (such as shape, color, size), machine noise, vibration, etc., and record abnormal performance.
2. Secondly, check the process parameters. Check whether the process parameters of the extruder, such as temperature, pressure, speed, and feed speed, are set reasonably, and compare them with the parameters during normal production.
Then, check the materials. Observe the quality, particle size, dryness, and whether foreign matter is mixed into the raw materials to ensure that the materials meet production requirements.
3. Then, check the mechanical parts. Check the wear of the screw and barrel for scratches, deformation, and cracks; check whether the transmission parts, such as belts, gears, couplings, etc., are operating normally, and whether they are loose, worn, or damaged; check whether the heating system components such as heating elements, thermocouples, and thermostats are working properly; check whether the filter is blocked.
4. In addition, check the electrical system. Check the running status of the motor for overheating, abnormal noise, and abnormal speed; check whether the line connection of the electrical control system is good, and whether the electrical components such as the controller, relay, and contactor are working properly.
5. Finally, use the detection tools. Use a thermometer to detect the temperature of each part, a pressure sensor to detect the pressure, and a tachometer to detect the screw speed, etc. Compare the test data with the standard value to determine the cause of the failure.
In short, the comprehensive use of observation, parameter comparison, material inspection, mechanical parts and electrical system inspection, and detection tools can quickly and accurately determine the cause of the failure of the plastic extruder.
