The accidental quenching, occurring in the sintering process, will make the steel back of a powder alloy brake lining brittle and useless.
粉末合金刹车片在烧结后有时会意外淬火，造成刹车片钢背脆化而报废。
2
By adopting the structure of the utility model, the tight closure state of the brake device and the housing can be relieved without opening the housing in the event of accidental power cut.