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我厂生产的铆钉枪上的铆钉模,材料为T8A,要求硬度HRC55～58。原来淬火采用钳子夹住φ45毫米处,两头倒换水冷却后,整体油冷。但这种操作方法经常出现:铆钉模头部凹处硬度偏低;φ45×4毫米处的小台易掉圈;使用过程中φ31毫米杆部往往在水冷和油冷的交界面处断裂。因此质量不高。后来我们对铆钉模的失效原因做了具体分析,认为: (1)由于铆钉头凹处淬火冷却条件不好而造成硬度偏低;
Rivet rivets produced by our factory rivets die, material T8A, hardness HRC55 ~ 58. Quenching the original use of pliers to clamp φ45 mm Department, after switching two water cooling, the overall oil-cooled. However, this method of operation often appears: the lower hardness of the recess of the rivet die; φ45 × 4 mm at the small desk is easy to lose the circle; the use of φ31 mm rod is often broken at the water-cooled and oil-cooled interface. So the quality is not high. Later, we made a detailed analysis of the causes of the failure of the rivet die. It is believed that: (1) the hardness is low due to the poor cooling condition of the rivet head recess;