【摘要】 将合金钢锤头进行常规退火、淬火、回火后,再在640~660℃对其安装部位进行局部盐浴热处理3 h,然后对锤头断面硬度的分布、工作和安装部位的冲击韧性及金相组织进行分析.结果表明,经局部热处理后,锤头的工作部位具有较高的硬度和耐磨性,安装部位具有较好的韧性,提高了锤头的使用寿命.更多还原

【Abstract】 The alloy steel hammer was treated by a local salt bath heat treatment for its installation part at 640-660 ℃ for 3 hours after the conventional annealing,quenching and tempering.The cross sectional hardness distribution as well as the impact toughness and morphologies of the installation part were investigated.The results indicate that the working parts have relatively high hardness and wear resistance and good ductility.The service life of the hammer has been improved.更多还原