履带式起重机臂架用890 MPa级钢管热处理性能探讨  

Discussion on heat treatment performance of 890 MPa steel pipe for crawler crane boom

作　　者：张新文[1] 刘广华 轩康乐 王晓兰 刘永 ZHANG Xinwen;LIU Guanghua;XUAN Kangle;WANG Xiaolan;LIU Yong(Special Steel Company of Jiangsu Yonggang Group Co.,Ltd.,Suzhou 215628,China;Jiangsu Changbao Plyson Steel Pipe Co.Ltd.,Changzhou 213000,China)

机构地区：[1]江苏永钢集团有限公司特钢公司,江苏苏州215628 [2]江苏常宝普莱森钢管有限公司,江苏常州213000

出　　处：《现代交通与冶金材料》2021年第4期88-92,共5页Modern Transportation and Metallurgical Materials

摘　　要：对履带式起重机臂架用890 MPa级钢管冲击韧性偏低的原因进行了分析,发现回火索氏体中存在大块贝氏体异常组织。在实验室模拟并探索钢管的热处理工艺,经过一系列研究发现,钢管的初次淬火和回火存在不充分性。经过试验,成品钢管的热处理工艺为:930℃,保温82min,640℃下回火保温215min;在这种热处理条件下,材料可获得较好的力学性能。The reason of low impact toughness of 890 MPa steel pipe used for crawler crane boom is analyzed.It is found that there is large bainite in tempered sorbite.The heat treatment process of steel pipe is simulated and explored in the laboratory.After a series of studies,it is found that the initial quenching and tempering of steel pipe are insufficient.After the test,the heat treatment process of finished steel pipe is as follows:930℃ for 82 min,640℃ for 215 min;Under this condition,the material can obtain better mechanical properties.

关 键 词：钢管 热处理 履带式起重机 臂架 冲击功 

分 类 号：TG335.71[金属学及工艺—金属压力加工] TG161