T8钢制铆钉模,在工作时承受很大的冲击、压缩和弯曲应力,服役条件较为恶劣,在采用整体调质(250～270 HB)后,对铆钉窝及尾端再用局部淬火和回火处理时,窝部的硬度为 53～56 HRC,尾部为 40～50HRC,使用中在肩部处易发生早期弯曲疲劳断裂,其原因是多冲断裂抗力不足所致。对T8钢铆钉模由整体调质加局部淬火和回火处理的工艺,改为整体淬火和低温回火处理,硬度仍为53～57 HRC时,可明显减少模具肩部的折断现象,使用寿命明显提高。其处理工艺 T8 steel rivet die, at work to bear a great impact, compression and bending stress, service conditions are more harsh, after using the whole quenched and tempered (250 ~ 270 HB) Fire treatment, the hardness of the nest of 53 ~ 56 HRC, the tail of 40 ~ 50HRC, easy to occur in the shoulder early bending fatigue fracture, the reason is due to inadequate resistance to multiple impact fracture. The T8 steel rivet die by the whole quenching and tempering and tempering process, instead of overall quenching and low temperature tempering, the hardness is still 53 ~ 57 HRC, can significantly reduce the mold shoulder breakage, service life Significantly improved. Its treatment process