34CrNi3Mo螺栓热处理裂纹分析
Crack Analysis on Heat-treatment for Bolt Made of 34CrNi3Mo
黄苏宁
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作者单位：北方重工集团有限公司 热处理分公司, 辽宁 沈阳 110141
中文关键字：34CrNi3Mo； 淬火开裂； 非金属夹杂物
英文关键字：34CrNi3Mo; quenching crack; non-metallic inclusions
中文摘要：对34CrNi3Mo螺栓调质后出现纵向裂纹的原因进行宏观和微观分析。结果表明，34CrNi3Mo螺栓原材料存在的严重非金属夹杂及淬火应力导致螺栓开裂。
英文摘要：The longitudinal crack of 34CrNi3Mo bolts piece after quenching and tempering was observed, and the cracking reasons were analysed in macroscopic and microscopic. The results show that the raw materials of 34CrNi3Mo bolt have serious problems of non-metallic inclusions and quenching stress inducing the crack.