12Cr13短轴强韧化热处理后心部裂纹问题研究  

Study on the central crack of 12Cr13 shortshaft after strengthening and toughening heat treatment

作　　者：范登胜 FAN Deng-sheng(Minxi Vocational and Technical College,Longyan 364000,Fujian,China)

机构地区：[1]闽西职业技术学院信息与制造学院,福建龙岩364000

出　　处：《贵阳学院学报（自然科学版）》2023年第1期69-73,96,共6页Journal of Guiyang University：Natural Sciences

基　　金：2020年福建省中青年教师教育科研项目“汽车智能修补喷涂系统的设计与研究”(项目编号:JAT201291)。

摘　　要：马氏体不锈钢12Cr13具有非常好的淬透性和抗腐蚀性,经过强韧化热处理工艺后能使其强度及韧性得到大幅度提高,具有广泛的工业应用性。针对经过热处理后心部产生裂纹的问题,阐述了12Cr13的热处理工艺及特性,揭示了连铸过程中潜在缺陷及机理等科学问题。最后,提出了通过控制淬火加热速度、工件出油温度、降低搅动速度和淬火后及时回火,并将这四种热处理工艺进行合理的组合,理论上可以有效改善12Cr13短轴基体心部的淬火裂纹问题。12Cr13 Martensitic stainless steel has very good hardenability and corrosion resistance.After strengthening and toughening heat treatment,its strength and toughness have been greatly improved,and it is used in a wide range of industrial applications.This study aimed at the problem of cracks in the core after heat treatment,the heat treatment process and characteristics of 12Cr13 are expounded,and scientific problems such as potential defects and mechanisms in the continuous casting process are revealed.Finally,it is proposed that by controlling the quenching heating speed,the oil temperature of the workpiece,reducing the stirring speed and tempering in time after quenching.Then,these four heat treatment processes are reasonably combined in the processing.Theoretically,the problem of quenching cracks in the core of the 12Cr13 short-axis matrix can be effectively improved.

关 键 词：强韧化 热处理 短轴 裂纹 

分 类 号：TG161[金属学及工艺—热处理] TG157[金属学及工艺—金属学]