45钢酒精淬火工艺研究
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摘要
以酒精为淬火介质,来解决45钢水淬易开裂而油淬不硬的问题。结果表明:酒精辅助淬火能避免水淬开裂现象,而且样品综合力学性能得到有效提高。相对水淬,酒精淬火时样品强硬度略有下降,但韧塑性得到显著提高;随着酒精浓度的增加,珠光体片层间距先减小后增大。在酒精体积浓度45%时,珠光体分布最均匀且片层间距最小,表现出良好的综合力学性能。
Alcohol is used as quenching medium to solve the problem that 45 steel is easy to crack by water quenching but not hardened by oil quenching. The results show that, alcohol auxiliary quenching can avoid water quenching cracking.Moreover, the comprehensive mechanical properties of the samples are improved effectively. Compared with that by water quenching, the hardness of the samples decreases slightly, but the ductility of the samples is significantly improved after quenched by alcohol. With the increase of alcohol concentration, the lamellar spacing of pearlite decreases first and then increases. When the alcohol volume concentration is 45%, the pearlite distribution is the most uniform and the lamellar spacing is the smallest, which shows good comprehensive mechanical properties.
Alcohol is used as quenching medium to solve the problem that 45 steel is easy to crack by water quenching but not hardened by oil quenching. The results show that, alcohol auxiliary quenching can avoid water quenching cracking.Moreover, the comprehensive mechanical properties of the samples are improved effectively. Compared with that by water quenching, the hardness of the samples decreases slightly, but the ductility of the samples is significantly improved after quenched by alcohol. With the increase of alcohol concentration, the lamellar spacing of pearlite decreases first and then increases. When the alcohol volume concentration is 45%, the pearlite distribution is the most uniform and the lamellar spacing is the smallest, which shows good comprehensive mechanical properties.
引文
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[2]刘东.45钢亚温淬火工艺可减少淬火开裂倾向[J].煤矿机械,2009,30(5):108-109.
[3]赵灵芝,刘艳雄,毛华杰.45钢超声波辅助油冷淬火工艺[J].金属热处理,2017,42(12):164-167.
[4]赵琦.乙醇燃料热解产气与积碳特性实验研究[D].重庆:重庆大学,2016.
[5]侯豁然,刘清友,孙新军,等.淬火冷却速度对碳素钢显微组织的影响[J].钢铁,2004,41(1):44-46.
[6]中仿科技.金属材料相图及物理性能计算软件JMatProV6.1简介[J].智能制造,2012(10):35-37.
[7]蔡云.热处理工艺对45钢组织和性能的影响分析[J].现代制造技术与装备,2016,42(10):125-126.
[8]易琨,陈静.用Photoshop处理金相图片[J].理化检验-物理分册,2006,33(11):571-573.
[9]李雪峰,王春芬,王嘉敏.回火马氏体与回火索氏体辨析[J].金属热处理,2012,37(4),12-16.
[10]王国红,宗斌.碳钢盘条中珠光体类型组织的区分和判定[J].冶金标准化与质量,2005,33(4):13-16.
[11]李炯辉.金属材料金相图谱[M].北京:机械工业出版社,2006.
[12]牧正志.细化钢铁材料晶粒的原理与方法[J].金属热处理,2006,31(1):1-9.
[13]高亚利,张莉,卢劲松.洛氏硬度计检定中常见各种误差及处理方法[J].计量与测试技术,2001,28(3):16-21.
[14]李亚斐,范艳艳,刘经宇,等.不同淬火介质对45钢淬火性能的影响[J].热加工工艺,2017,46(10):213-215.
[15]王立群,张琴,何雁锋.45钢拉伸试验测量结果不确定度的评定[J].浙江冶金,2016,44(Z2):31-35.
[16]朱施利,胡文豪.共析钢中片状珠光体脆化钢材的机理研究[J].铸造技术,2010,31(5):584-588.