高强度焊接结构钢HQ80C的研制与应用  

DEVELOPMENT AND APPLICATION OF HIGH STRENGTH WELDABLE CONSTRUCTIONAL STEEL HQ80C

作　　者：张万山[1] 秦瑞凯 刘维兰[1] 王德水[1] 尹桂珍[1] 

机构地区：[1]鞍山钢铁公司,鞍山钢铁公司钢研所

出　　处：《钢铁》1994年第2期46-50,共5页Iron and Steel

摘　　要：本文介绍了我国无镍调质型７８５ＭＰａ级高强度焊接结构钢ＨＱ８０Ｃ的化学成分、生产工艺流程、力学性能、物理、焊接工艺性能、显微组织及应用情况。钢板经调质处理后，σ＿ｓ≥６８５ＭＰａ，σ＿ｂ≥７８５ＭＰａ，δ＿５≥１４％，Ａ＿ｋｖ－２０＿℃≥４７Ｊ，Ａ＿ｋｖ－４０℃≥２９Ｊ，冷弯ｄ＝３ａ，１８０°完好。应用结果表明，该钢板可替代同等强度级别的进口钢板，制造各种大型工程机械，并具有广阔的应用前景。AbstractThis paper intoduces the cemposition, production process,mechaniel and physical pto- petties,weldability and microstructure of the Ni-free heat-treated 785 MPa grade high strength weldable constructional steel HQ 80C and its application.Under the state quenched and temper- cd at high temperature,the properties of the plate can be:σ_5 ≥685 MPa;σ_5b≥785 MPa;σ_5≥14%;Akv-20℃≥47 J;Akv-40℃≥29 J when cold bent, d=3a and not be damaged at 180°,Its application has showed that the plate can replace the imported plate with same strength grade to be used to all kinds of large cngineering machines.The prospect of its application is very broad.

关 键 词：高强度 焊接结构钢 研制 应用 

分 类 号：TG142.31[一般工业技术—材料科学与工程]