10B21低碳合金钢等温球化退火工艺研究  

Research on isothermal spheroidizing annealing process of 10B21 low carbon alloy steel

作　　者：王斯华 郝小龙 肖杰 刘晓祥 Wang Sihua;Hao Xiaolong;Xiao Jie;Liu Xiaoxiang(Dongguan Kelee Steel Wire Co.,Ltd.,Dongguan 523200,China)

机构地区：[1]东莞科力线材技术有限公司,广东东莞523200

出　　处：《金属制品》2021年第6期17-24,共8页Metal Products

摘　　要：为改善10B21低碳合金冷镦钢钢丝的冷镦性能,通过研究10B21钢热处理中各因素对球化效果的影响,获得最佳球化退火工艺参数。结果表明,最佳球化退火工艺参数为:奥氏体化温度740℃,奥氏体化时间4 h,冷却速率20℃/h,等温温度670℃,等温时间4 h。10B21冷镦钢丝经最佳工艺条件球化退火得到的球化组织能满足冷镦成型要求。Influence of various factors on spheroidizing effect in heat treatment of 10B21 low carbon alloy steel was studied to improve cold heading property of 10B21 low carbon alloy cold heading steel wire,the optimum spheroidizing annealing process parameters were obtained.Results show that the optimum spheroidizing annealing parameters are as follows:austenitizing temperature 740℃,austenitizing time 4 h,cooling rate 20℃/h,isothermal temperature 670℃,isothermal time 4 h.The spheroidized structure of 10B21 low carbon alloy cold heading steel wire obtained by spheroidizing annealing under the optimum technological conditions can meet requirements of cold heading forming.

关 键 词：10B21 低碳合金钢 冷镦钢丝 球化退火 热处理 

分 类 号：TG356.45[金属学及工艺—金属压力加工]