工程机械用TQ960E微合金化低碳高强度钢的开发  

The Development of Mechanical Engineering of TQ960E Microalloyed High Strength Low Carbon Steel

作　　者：孟传峰 王一德[2] 卫英慧[1] 崔天燮[2] 王育田 Meng Chuanfeng;Wang Yide;Wei Yinghui;Cui Tianxie;Wang Yutian(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024;Technology Center,Shanxi Taigang Stainless Steel Co.,Ltd.,Taiyuan 030003)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024 [2]山西太钢不锈钢股份有限公司技术中心,太原030003

出　　处：《特殊钢》2018年第6期66-70,共5页Special Steel

摘　　要：研究了工程机械用TQ960E微合金化低碳高强度钢的化学成分设计、钢质纯净度提升、热处理工艺试验、析出物分析等,结果表明,TQ960E钢12 mm热轧板(/%:0. 18C,0.23Si,1.50Mn,0.010P,0.003S,0.06Ti,0.002B,0.006 3N,0.001 30)最佳淬火温度860～900℃,回火温度300～350℃,工业化试制出的钢板屈服强度≥1 000 MPa,抗拉强度≥1 100 MPa,延伸率≥10%,-40冲击功≥34 J,满足国内工程机械用超高强钢的标准及应用要求。The chemical composition design, steel purity improving, the heat treatment process and precipitates anal- ysis of the The mechanical engineering of TQ960E microalloyed high strentth low carbon steel were studied. The results in- dicate that for the 12 mm hot-rolled plate of steel TQ960E （/% ：0. 18C, 0. 23Si, 1.50Mn, 0. 010P, 0. 003S, 0.06Ti, 0. 002B, 0.006 3N, 0.001 30） the optimum quenching temperature is 860 - 900 % and the tempering temperature is 300 - 350 %. The steel plates were developed and prduced by industrialization, with the yield strength no less than 1 000 MPa, the tensile strength above 1 100 MPa, the elongation above 10% or higher and the Charpy impact energy at -40℃ no less than 34 J. The steel can meet domestic standard and application requirements of high strength steel for engineering machinery.

关 键 词：工程机械 高强钢 微合金化 热处理 力学性能 开发 

分 类 号：TG142.1[一般工业技术—材料科学与工程]