Φ3.80 mm 60Si2MnA淬回火弹簧钢丝抗拉强度异常分析  

Abnormal analysis of tensile strength of diameter 3. 80 mm 60Si2MnA quenched and tempered spring wire

作　　者：邢献强 陈志伟 菅军伟 Xing Xianqiang;Chen Zhiwei;Jian Junwei(Sinosteel Zhengzhou Research Institute of Steel Wire Products Co.,Ltd.,Zhengzhou 450001,China;Guangzhou ORSA Wire Science&Technology Co.Ltd.,Guangzhou 511450,China)

机构地区：[1]中钢集团郑州金属制品研究院有限公司,河南郑州450001 [2]广州市奥赛钢线科技有限公司技术部,广东广州511450 [3]广州市奥赛钢线科技有限公司品质部,广东广州511450

出　　处：《金属制品》2020年第1期33-37,共5页Metal Products

摘　　要：3.80 mm 60Si2MnA淬回火弹簧钢丝抗拉强度出现异常。对力学性能出现严重不均的3.80 mm 60Si2MnA淬回火弹簧钢丝抗拉强度和断面收缩率进行分析,对3.80 mm 60Si2MnA弹簧钢丝微观组织和显微硬度进行比较。结果表明,3.80 mm 60Si2MnA弹簧钢丝淬回火后出现力学性能严重不均的原因有3个:奥氏体化炉中段炉温异常下降使奥氏体均匀化无法顺利完成;6.5 mm 60Si2MnA热轧线材心部存在严重偏析;奥氏体化炉横向温度分布均匀性较差。Tensile strength of diameter 3.80 mm 60Si2MnA quenched and tempered spring wire occurs abnormal.The tensile strength and percentage reduction of area of diameter 3.80 mm 60Si2MnA quenched and tempered spring wire of which mechanical properties are seriously uneven are analyzed.Microstructure and microhardness of diameter 3.80 mm 60Si2MnA spring wire are compared.Results show that mechanical properties of diameter 3.80 mm 60Si2MnA spring wire seriously uneven are the following three reasons:abnormal temperature drop in middle section of austenitizing furnace makes homogenization of austenite unable to be completed smoothly,diameter 6.5 mm 60Si2MnA hot-rolled wire rod core has serious segregation,uniformity of transverse temperature distribution in austenitizing furnace is poor.

关 键 词：60SI2MNA 淬回火弹簧钢丝 抗拉强度 偏析 

分 类 号：TG356.45[金属学及工艺—金属压力加工]