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机械零件加工中易被磁化,有时虽经退磁仍有剩磁。在低频感应加热时,靠近强磁性物体或与其他零件摩擦,机械零件也会产生磁性。这种磁性,如果超过产品质量要求,就会造成质量隐患,甚至出现故障。如我厂装载机刹车片平磨后退磁不净,常具有8～10Oe(奥斯特)剩磁。该零件装配后,在整机跑车制动时,由于磁性作用使刹车片不能马上脱开(此时,油中铁磁杂质充当了导磁媒介),造成制动不灵或失效;在解决液力变矩器漏油问题中发现,
Mechanical parts are susceptible to magnetization during machining, sometimes with residual magnetization even after demagnetization. In the low-frequency induction heating, close to the strong magnetic objects or friction with other parts, mechanical parts will produce magnetic. This magnetic, if more than product quality requirements, it will result in quality problems, or even failure. If my factory loom brake flat grinding back demagnetization net, often with 8 ~ 10Oe (Auster) remanence. After the parts are assembled, when the whole sports car brakes, the brake can not be disengaged immediately due to the magnetic effect (in this case, the magnetic impurities in the oil act as a magnetic medium), resulting in braking failure or failure; in solving the problem of hydraulic Torque converter leakage problem found,