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制动电磁铁和牵引电磁铁广泛用于各种机床的控制系统中,它的工作性能可靠与否,直接影响机床的传动精度。电磁铁的紧固,传统的工艺是采用铆接方法,其不足之处在于冲模制造复杂,生产工序繁多。值得指出的是,由于电磁铁铆接部位偏于磁轭中心,冲片铆压松紧不匀,从而产生漏磁、涡流以致发热,使电磁铁耗能多,使用寿命短,工作不可靠。为改善上述不良状况,对CJ12 250型交流接触器电磁铁、MFJ145型交流阀用电磁铁和MQ1 5131型牵引电磁铁的紧固,我们曾采用钨极氩弧焊方法,效果良好。为降低成本,提高效率,确保质量,现改为钨极脉冲氢氩混合气体保护焊,收到预期的效果。
Brake electromagnets and traction electromagnets are widely used in a variety of machine control systems, and its work performance is reliable or not, directly affect the machine’s transmission accuracy. Electromagnet fastening, the traditional process is the use of riveting method, the downside is the complexity of die manufacturing, production processes and more. It is worth pointing out that the riveting part of the electromagnet deviates from the center of the yoke and the riveting pressure of the punching sheet is unevenly distributed, resulting in leakage flux and eddy current, which make the electromagnet consume more energy and have short service life and work unreliable. In order to ameliorate the above-mentioned troubles, we have used the TIG welding method to fasten the CJ12 250 AC contactor electromagnet, MFJ145 AC solenoid electromagnet and MQ1 5131 traction electromagnet. In order to reduce costs, improve efficiency and ensure the quality, it is replaced by tungsten pulse argon-argon gas mixture welding, and the expected result is received.