矿用圆环链用25MnV钢生产实践  

Production practice of 25MnV steel for mining circular chain

作　　者：练昌 江金东[1] 魏福龙[1] 王劲松 Lian Chang;Jiang Jindong;Wei Fulong;Wang Jinsong(Shougang Shuicheng Steel(Group)Co.,Ltd.,Liupanshui 553028,China)

机构地区：[1]首钢水城钢铁(集团)有限责任公司

出　　处：《金属制品》2019年第6期39-42,共4页Metal Products

摘　　要：介绍圆环链用钢25MnV的开发过程。给出25MnV生产工艺路线,提出25MnV的碳质量分数稳定控制范围为0.26%~0.27%、冶炼过程的初渣碱度2.4~2.8、终渣碱度3.4~3.6,铸坯夹杂物尺寸控制在12~14μm、中心疏松0.5~1.0级。按设计的工艺路线组织试验和生产,产品直径17.8~18.0 mm,不圆度0.2~0.3 mm。经交叉试验得出最佳热处理参数淬火温度900℃、回火温度400℃。产品的力学性能、弯曲性能、外观质量、焊接性等综合指标符合GB/T 10560—2017矿用高强度圆环链用钢技术条件要求,可满足用户使用要求。To introduce development process of steel 25MnV for circular chain.The 25MnV production process route is given.The stable control range of carbon content percentage is 0.26%~0.27%,the initial slag basicity of smelting process is 2.4~2.8,and the final slag basicity is 3.4~3.6,the size of slab inclusions is controlled 12~14μm,the center porosity is 0.5~1.0.According to the designed process route,the test and production are organized.The product strip diameter is 17.8~18.0 mm,and the roundness is 0.2~0.3 mm.The optimum heat treatment parameters were obtained by cross-examination,quenching temperature 900℃,tempering temperature 400℃.The comprehensive index of mechanical properties,bending performance,appearance quality and weldability of the product meets the requirements of GB/T 10560—2017,which can meet the requirements of users.

关 键 词：圆环链 25MnV 化学成分 控轧控冷 非金属夹杂物 

分 类 号：TG335.63[金属学及工艺—金属压力加工]