预处理不合格对工件变形的影响  

The influence of pre-treatment mixed crystal on workpiece deformation

作　　者：郝丰林 钟兴 刘涛 王正起 纪仕超 张希平 HAO Fenglin;ZHONG Xing;LIU Tao;WANG Zhengqi;JI Shichao;ZHANG Xiping(Zhejiang Shuanghuan Driveline Co.,Ltd.,Hangzhou 311100,Zhejiang,China;Jiangsu Shuanghuan Driveline Co.,Ltd.,Huaian 223200,Jiangsu,China;Qingdao Zhengrui Heat Treatment Co.,Ltd.,Qingdao 266109,Shandong,China)

机构地区：[1]浙江双环传动机械股份有限公司杭州管理总部,浙江杭州311100 [2]江苏双环齿轮有限公司,江苏淮安223200 [3]青岛钲瑞热处理有限公司,山东青岛266109

出　　处：《金属加工（热加工）》2024年第7期89-93,共5页MW Metal Forming

摘　　要：针对某低碳合金钢齿轮渗碳淬火后因齿轮平面扭曲变形大而报废的现象,通过变形检测,对热处理工装、毛坯原材料及正火工艺等影响因素进行分析,表明正火预处理不合格是造成齿轮变形的重要原因。阐述了等温正火预处理对防止齿轮热处理变形所具有重要的作用。In view of the phenomenon of scrap of a low carbon alloy steel gear due to large distortion of gear plane after carburizing and quenching,the influence factors such as heat treatment tooling,blank raw materials and normalizing process were analyzed through deformation detection.The results show that unqualified normalizing pretreatment is an important cause of gear deformation.The isothermal normalizing pretreatment plays an important role in preventing the deformation of gear during heat treatment.

关 键 词：渗碳淬火 贝氏体 变形 混晶 二次正火 

分 类 号：TG162.73[金属学及工艺—热处理]