| 粉末机械双螺杆挤出机故障的产生原因排除 |
| 添加时间：2019/11/8 15:26:04 浏览次数： |
| 一、粉末机械主电机不能启动 I. The main motor of powder machine cannot be started 产生原因：开车程序有错。主电机线程有问题，熔断丝是否被烧环。 Cause: wrong driving procedure. There is a problem with the main motor thread and whether the fuse is burnt. 处理方法：检查程序，按正确开车顺序重新开车。检查主电机电路。检查润滑油泵是否启动，检查与主电机相关的连锁装置的状态。变频器感应电未放完，关闭总电源等待5分钟以后再启动。检查紧急按钮是否复位。 Handling method: check the procedure and restart according to the correct starting sequence. Check the main motor circuit. Check whether the lubricating oil pump is started, and check the status of the interlocking device related to the main motor. The induction power of the frequency converter is not discharged, turn off the main power supply and wait for 5 minutes before starting. Check whether the emergency button is reset. 二、主电机发出异常声音 II. Abnormal sound from main motor 产生原因：粉末机械主电机轴承损坏。主电机可控硅整流线路中某一可控硅损坏。 Cause: main motor bearing of powder machine is damaged. One of the thyristors in the main motor thyristor rectifier circuit is damaged. 处理方法：更换主电机轴承。检查可控硅整流电路，必要时更换可控硅元件。 Treatment: replace the main motor bearing. Check the silicon controlled rectifier circuit and replace the silicon controlled components if necessary. 三、主机电流不稳 III. unstable current of main engine 产生原因：喂料不均匀、主电机轴承损坏或润滑不良、某段加热器失灵，不加热、螺杆调整垫不对，或相位不对，元件干涉。 Causes: uneven feeding, main motor bearing damage or poor lubrication, heater failure in a certain section, non heating, screw adjustment pad error, or phase error, element interference. 处理方法：检查喂料机，排除故障。检修主电机，必要时更换轴承。检查各加热器是否正常工作，必要时更换加热器。检查调整垫，拉出螺杆检查螺杆有无干涉现象。 Handling method: check the feeder and remove the fault. Repair the main motor and replace the bearing if necessary. Check whether the heaters work normally and replace them if necessary. Check the adjusting pad and pull out the screw to check whether there is interference. 四、主电机轴承温升过高 IV. high temperature rise of main motor bearing 产生原因：轴承润滑不良。轴承磨损严重。 Cause: poor lubrication of bearing. The bearing is seriously worn. 处理方法：检查并加润滑剂。检查电机轴承，必要时更换。 Treatment: check and add lubricant. Check the motor bearing and replace if necessary. 五、机头出料不畅或堵塞 V. the discharge of machine head is not smooth or blocked 产生原因：加热器某段不工作，物料塑化不良。操作温度设定偏低，或塑料的分子量分布宽，不稳定。可能有不容易熔化的异物。 Cause: some section of the heater does not work and the material is not plasticized properly. The operating temperature setting is low, or the molecular weight distribution of plastic is wide and unstable. There may be foreign materials that are not easy to melt. 处理方法：检查粉末机械加热器，必要时更换。核实各段设定温度，必要时与工艺员协商，提高温度设定值。清理检查挤压系统及机头。 Treatment: check the powder mechanical heater and replace it if necessary. Verify the set temperature of each section, and consult with the technologist if necessary to increase the set temperature. Clean and check extrusion system and head. 六、主电启动电流过高 Vi. high starting current of main power 产生原因：加热时间不足，扭矩大。双螺杆挤出机某段加热器不工作。 Causes: insufficient heating time and large torque. Some heater of twin screw extruder does not work. 处理方法：开车时应用手盘车，如不轻松，则延长加热时间或检查各段加热器是否正常工作。 Handling method: use hand turning gear when driving. If it is not easy, extend the heating time or check whether the heaters in each section work normally. |
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