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摘要：
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汽车刹车片是易损件,寿命一般在3×104~5×104km。提高刹车片模具的使用寿命,降低制造成本,是汽车刹车片制造企业面临的一个重要课题。本文针对汽车刹车片钢背落料凹模使用寿命低的问题,对模具的结构和制造工艺进行了改进。在模具结构方面,采用了预应力套圈结构,改善了模具的受力状态;在制造工艺方面,改一次线切割工艺为两次线切割工艺,同时降低了热处理的硬度,提高了模具的抗冲击性。这些措施使模具寿命由数千次提高到2×105次以上,取得了很好的效果。
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Automobile brake block is easy to be damaged,whose general service life is about 3×104～5×104 km.It is an important problem to improve the service life and cut down the costs in manufacturing brake block.The improvement of structure and manufacturing process was done in the aspect of low service life of blanking dies of brake block steel-back.The pre-stressing ferrule was used to improve the structure stressed state.One time wire electrode cutting process was changed into two times manufacturing process.At the same time,the heat treatment hardness was reduced to improve the shock resistance.So the die service life can be increased from several thousands up to 2×105.Good results can be achieved.
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作者简介：
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参考文献：
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