PAG水基淬火液对42CrMo钢调质组织性能影响的研究  

Study on the Effect of PAG Water-based Quenching Solution on Microstructure and Properties of 42CrMo Steel

作　　者：郁俐[1] 涂小龙[1] 吴韬[2] 陈云祥[2] 

机构地区：[1]杭州前进齿轮箱集团股份有限公司,浙江杭州311203 [2]浙江机电职业技术学院,浙江杭州310053

出　　处：《新技术新工艺》2017年第4期6-11,共6页New Technology & New Process

摘　　要：利用光学显微镜观察组织,利用洛氏硬度计、万能试验机和冲击试验机进行力学性能测试,对不同规格的42CrMo钢在8%、10%和12%PAG水基淬火液中淬火再高温回火后,对组织性能的影响进行了研究。研究结果表明,42CrMo钢在8%、10%和12%PAG水基淬火液中淬火,直径在φ200mm以内,表面硬度为51~54HRC;590℃回火后,表面硬度为30~33HRC;心部硬度分别为25.5~28.3、24~28和23~27HRC;距表面30mm处为回火索氏体,心部为回火索氏体和铁素体,并随PAG水基淬火液浓度增加,心部铁素体量增加;距表面17.5mm处,抗拉强度≥860 MPa,伸长率≥16.5%,断面收缩率≥63%,冲击吸收能量≥103J。OM is used to observe the microstructure. Rockwell hardness tester, universal material testing machine and impact tester are used to test the mechanical properties. The microstructure and properties of 42CrMo materials with differ ent specifications in 8%, 10%, 12%PAG water-based quenching and high tempering are studied. The results show that 42CrMo materials in 8%, 10%, 12%PAG water-based quenching liquid quenching, the diameter of the material in diameter less than 200 mm, the surface hardness is 51-54 HRC; 590℃ after tempering, the surface hardness is 30-33 HRC; the core hardness are 25.5-28.3, 24-28 and 23-27 HRC; at 30 mm from surface to tempered sorbite, the core to tempered sorbite and ferrite, and PAG water-based quenching density increased, center of ferrite is increased; from the surface of 17.5 mm, tensile strength is more than 860 MPa, elongation of more than 16.5%, section shrinkage rate of more than 63%, the impact of more than 103 J.

关 键 词：42CrMo PAG水基淬火液 调质 组织 性能 

分 类 号：TG156.1[金属学及工艺—热处理] TG156.6[金属学及工艺—金属学]