利用在线热处理技术研发YL82B-QM高强钢绞线  

Research and Development of YL82B-QM High-strength Steel Strand by On-line Heat Treatment Technology

作　　者：阎超楠 徐凯 张文涛 陈殿清 袁相坤 李麦麦 Yan Chaonan;Xu Kai;Zhang Wentao;Chen Dianqing;Yuan Xiangkun;Li Maimai(Wire Research Institute,Qingdao Special Iron&Steel Co.,Ltd.,Qingdao 266409,China)

机构地区：[1]青岛特殊钢铁有限公司线材研究所,青岛266409

出　　处：《特殊钢》2023年第5期43-46,共4页Special Steel

摘　　要：通过调整炼钢成分(质量分数),将V含量由0.09%降低到≤0.005%,Cr含量由0.28%降低到≤0.05%,Mn含量由0.85%降低到0.70%,在降低了合金元素情况下,通过调整连铸轻压下工艺、在线热处理技术(吐丝温度890~910℃、盐槽温度510~520℃)生产的Φ15 mm YL82B-QM高强钢绞线盘条,平均抗拉强度达到1227 MPa,断面收缩率39.3%,索氏体化率98%,同圈强度在40 MPa范围内,晶界渗碳体和心部马氏体≤1.0级;与传统的Cr、V合金化Φ15 mm YL82B-V风冷盘条相比,盘条性能更加优良,降低了合金成分的加入量,且不需要风机冷却,极大的降低了能源消耗,做到了绿色环保工业生产,该盘条用于生产Φ10 mm 1570 MPa级轨枕钢丝,经过客户验证,钢丝抗拉强度、延伸率、弯折等重要指标均符合标准要求。By adjusting the composition of the steelmaking process,reducing the V content from 0.09%to 0.005%,Cr content from 0.28%to 0.05%,Mn content from 0.85%to 0.70%.In the case of reduced alloy elements,Φ15 mm YL82B-QM high-strength steel strand produced by adjusting the soft reduction during continuous casting process,on-line heat treatment technology(spinning temperature 890-910℃,salt tank temperature 510-520℃),the average tensile strength reached 1227 MPa,shrinkage of across section of 39.3%,soxtization rate 98%,the same circle strength is within 40 MPa,crystal boundary carburizing and cardiac martensite level 1.0 or below.Compared with the traditional Cr,V alloyingΦ15 mm YL82B-V air-cooled wire rod,the wire rod performance is better,reduces the amount of alloy composition,and does not require fan cooling,greatly reduces energy consumption,truly achieves green industrial production.The wire rod is used for the production ofΦ10 mm 1570 MPa grade sleeper steel wire.The customer has verified that the steel wire tensile strength,elongation,bending and other important indicators meet the standard requirements.

关 键 词：在线热处理 YL82B-QM 高强钢绞线 轨枕钢丝 

分 类 号：TF762[冶金工程—钢铁冶金] TG335.6[金属学及工艺—金属压力加工]