淬火冷却速率对42CrMo4钢风电空心主轴的影响
|
摘要
我司某型号42CrMo4钢风电空心主轴调质热处理后,出现开裂报废的比例约为20%,本文针对该型号产品的问题进行了成分检验、性能检验、金相检验等。参考文献的理论知识,分析讨论得出了以降低水冷时间来降低淬火冷却速率,得到回火索氏体+粒状贝氏体回火组织+贝氏体铁素体条块组织。降低了产品开裂风险,并保证了合格的力学性能。
The proportion of cracking and scrapping is about 20% for a type of 42 CrMo4 steel hollow spindle of wind power after quenching and tempering heat treatment. In this paper,this type of product is carried out a series of physical and chemical tests,such as composition inspection,performance inspection and metallographic examination. According to the theoretical knowledge in reference literature,it is analyzed and discussed that the quenching cooling rate is reduced by reducing the water cooling time to obtain the tempered sorbite + granular bainite tempering structure + bainitic ferrite bar structure,which the cracking risk of product is reduced and the qualified mechanical properties are ensured.
The proportion of cracking and scrapping is about 20% for a type of 42 CrMo4 steel hollow spindle of wind power after quenching and tempering heat treatment. In this paper,this type of product is carried out a series of physical and chemical tests,such as composition inspection,performance inspection and metallographic examination. According to the theoretical knowledge in reference literature,it is analyzed and discussed that the quenching cooling rate is reduced by reducing the water cooling time to obtain the tempered sorbite + granular bainite tempering structure + bainitic ferrite bar structure,which the cracking risk of product is reduced and the qualified mechanical properties are ensured.
引文
[1]史可庆,刘哲,刘永超.风电主轴冲击试验不合格原因分析[J].金属热处理,2018,43(6):237-240.
[2]梁晓军,焦四海,王聪,等.冷却速率对直接淬火钢组织和性能的影响[J].机械工程材料,2007(2):16-18,39.
[3]高红梅,文超,孙轶山.显微组织和温度对42CrMo4钢力学性能的影响[J].材料热处理学报,2018,39(3):87-92.
[4]赵莉萍,刘宗昌,杨慧冯,等. 42CrMo钢的贝氏体组织相变[J].特殊钢,2004(4):21-23.
[5]李涛,包喜荣,杨慧. 42CrMo钢贝氏体转变的研究[J].包头钢铁学院学报,2004(4):321-325.
[6]刘宗昌,计云萍.贝氏体组织结构辨识方法(一)[J].热处理技术与装备,2018,39(5):1-7.
[7]陈梽雄,左鹏鹏,闵娜,等. 4Cr5Mo2V钢贝氏体等温相变动力学[J].材料热处理学报,2018,39(5):147-153.
[8]刘宗昌,计云萍,任慧平,等.碳含量对铬钼钢贝氏体组织形貌的影响[J].热处理,2008(4):19-25.
[9]徐立善,余伟,张烨铭,等.调质低碳贝氏体钢的组织和性能[J].北京科技大学学报,2012,34(2):125-131.
[10]武会宾,尚成嘉,赵运堂,等.回火对低碳贝氏体钢组织稳定性及力学性能的影响[J].钢铁,2005(3):62-65,82.
[11]蒋洋,史伟,陈维刚,等.淬火温度对12Cr2Mo1钢力学性能的影响[J].热处理技术与装备,2018,39(5):51-53.
[2]梁晓军,焦四海,王聪,等.冷却速率对直接淬火钢组织和性能的影响[J].机械工程材料,2007(2):16-18,39.
[3]高红梅,文超,孙轶山.显微组织和温度对42CrMo4钢力学性能的影响[J].材料热处理学报,2018,39(3):87-92.
[4]赵莉萍,刘宗昌,杨慧冯,等. 42CrMo钢的贝氏体组织相变[J].特殊钢,2004(4):21-23.
[5]李涛,包喜荣,杨慧. 42CrMo钢贝氏体转变的研究[J].包头钢铁学院学报,2004(4):321-325.
[6]刘宗昌,计云萍.贝氏体组织结构辨识方法(一)[J].热处理技术与装备,2018,39(5):1-7.
[7]陈梽雄,左鹏鹏,闵娜,等. 4Cr5Mo2V钢贝氏体等温相变动力学[J].材料热处理学报,2018,39(5):147-153.
[8]刘宗昌,计云萍,任慧平,等.碳含量对铬钼钢贝氏体组织形貌的影响[J].热处理,2008(4):19-25.
[9]徐立善,余伟,张烨铭,等.调质低碳贝氏体钢的组织和性能[J].北京科技大学学报,2012,34(2):125-131.
[10]武会宾,尚成嘉,赵运堂,等.回火对低碳贝氏体钢组织稳定性及力学性能的影响[J].钢铁,2005(3):62-65,82.
[11]蒋洋,史伟,陈维刚,等.淬火温度对12Cr2Mo1钢力学性能的影响[J].热处理技术与装备,2018,39(5):51-53.