42CrMo4大截面主轴锻件热处理工艺及性能研究  

Research on Heat Treatment Process and Property of 42CrMo4 Large Section Spindle Forging

作　　者：付海成 贺欢 Fu Haicheng;He Huan

机构地区：[1]一重集团天津重型装备工程研究有限公司,天津300457

出　　处：《一重技术》2024年第3期22-27,42,共7页CFHI Technology

摘　　要：针对大尺寸42CrMo4主轴锻件常规调质后冲击功及断面收缩率不合,进行补充回火和亚温淬火试验。结果表明,随回火时间的延长和回火温度的提高,锻件强度降低、断面收缩率和冲击功均有提高,但冲击功仍不满足技术要求;而采用亚温淬火工艺后材料塑韧性显著提高,主轴锻件各项性能指标满足技术要求。This paper studies the large-sized 42CrMo4 spindle forging for unsatisfactory impact energy and section shrinkage after normal quenching and tempering by supplementary tempering and subthermal quenching tests.The results show that with increase of tempering time and temperature,strength of the forging part decreases while section shrinkage and impact energy improves,but the impact energy still does not meet technical requirement.Subthermal quenching can significantly improve toughness of the material,and the spindle forging can meet all performance requirements.

关 键 词：42CrMo4主轴锻件 亚温淬火 力学性能 组织分析 

分 类 号：TG156.3[金属学及工艺—热处理]