45CrNiMo1V钎头热处理及性能研究  

Study on heat treatment and proporty of 45CrNiMo1V drill bit

作　　者：欧梅桂[1] 龙潜[2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]首钢贵阳特殊钢有限责任公司

出　　处：《矿山机械》2012年第6期28-31,共4页Mining & Processing Equipment

摘　　要：对45CrNiMo1V球齿钎头钢的热处理工艺参数进行了研究,并通过多冲击疲劳试验,硬度测试及金相组织和疲劳断口观察,对所制定的热处理工艺进行了验证。结果表明,45CrNiMo1V钢在880℃油淬、580℃油冷回火的热处理下,其多冲击疲劳寿命较高,钎头壳体硬度平均值为45.5HRC,完全达到工艺要求。Heat treatment technique for column button drill bit steel 45CrNiMo1V was studied,as well as repeated impact fatigue and hardness test and observation of microstructure and fracture surface were applied to verify the heat treatment technique.Results showed that repeated impact fatigue lifespan was longer when 45CrNiMo1V steel were oil quenched at 880℃ and oil tempered at 580℃,and the average hardness of bit shell reached 45.5HRC,which completely met the technical requirements.

关 键 词：45CrNiMo1V 热处理工艺 多冲击疲劳 硬度 

分 类 号：TD421.25[矿业工程—矿山机电] TG162.23[金属学及工艺—热处理]