
第30卷第12期 2011年12月
中国材料进展 MATERIALS CHINA
Vol.30No.12 Dec.2011
武钢大线能量焊接系列钢的研发进展
陈晓,卜勇,习天辉(武钢研究院,湖北武汉430080)
要:提出了氧氮化物和氧硫化物冶金新思路、新原理,发明了高熔点第二相质点诱导相变技摘
术,突破了钢铁材料不能承受大线能量焊接的难关,从技术背景、冶金原理、技术关键及应用情况等方面详细介绍了武钢近年来自主研发的大线能量低焊接裂纹敏感性钢、大线能量焊接高强度钢大线能量焊接低温钢、大线能量焊接耐火耐候钢、大线能量焊接抗震钢等系列钢种。该系列钢的集成技术及产业化应用,为我国该系列钢的需求提供了技术支撑,有效带动了我国有关钢厂对高性能
高技术含量钢材的研发和生产,结束了大线能量焊接钢长期依赖进口并受制于人的历史。关键词:大线能量焊接钢;低温钢;耐候钢;抗震钢;冶金原理
中图分类号:TG142
陈
晓
文献标识码:A
文章编号:16743962(2011)12003406
Progress onResearchandDevelopmentofLarge
eHeat
InputWeldingSteel SeriesinWISCO
CHENXiao,BU Yong,XI Tianhui
(R&D Center,Wuhan Iron and Steel (Group) Corporation,Wuhan 430080, China)
Abstract: In this paper, new ideas and principles of oxide-nitride and oxide-sulfide metallurgy was put forward, the technique of the second phase particles with high melting point which induced phase transformation was invented, thus the technical difficulties of iron and steel materials can not withstand large heat input welding were broken. The new generation series of large heat input welding steel innovated by Wuhan Iron and Steel (Group) Corporation( WISCO) in recent years was introduced on the following aspects including technology background, metallurgy theory, technology characteristics as well as applications. The steels are as follows, large heat input welding steel with low susceptibility to welding crack, large heat input welding steel with high strength, large heat input welding steel with low temperature , large heat input welding steel with fire-resistance & weathering, large heat input welding steel with earthquake-resistance. The integration and in-dustrialization of the steel series provided technical support for the demand of this series steel in China, effectively promo ted the research, development and production of high performance and high-tech steels, and ended the long-term history of the dependence on imports of those steels.
Key words: large heat input welding steel; low temperature steel; fire-resistance and weathering steel; earthquake-resistance steel; metallurgy principles
前言 1
大线能量焊接钢是大幅度提高焊接效率的新一代钢种,其焊接线能量比传统的低合金高强度钢(≤35kJ/cm)提高5~10倍。1996年以前,国际上仅有日本几家钢铁企业研制了这类钢种,并严格限制技术输出。当时我国全部依靠进口,为打破断,武钢从1996年起自主创新开展了该系列钢的研究,以全新的氧氮化物、氧硫化物冶金新思路、新原理和新方法,发明了高熔点第二相质点诱导相变等方法,突破了钢铁材料不能承受大线能量焊接难关,研发了系列大线能量焊接的新钢种,可
收稿日期:2011-08-18
通信作者:陈晓,男,1940年生,教授,博士生导师
承受5~10倍于16Mn钢的焊接线能量,大幅度提高了焊接效率与工程进度。
武钢大线能量焊接系列钢已全部实现产业化,广泛应用于压力容器、石油化工、水电及建筑结构等行业,综合性能达到国际先进和国际领先水平。《武钢大线能量焊接系列钢的技术发明及应用》获2009年国家技术发明二等奖,实现了武钢零的突破。
大线能量焊接钢技术背景
70年代末80年代初,从造船部门开始,在石油、化工、水电、城建等许多技术领域,产品结构日益大型化。与此相应,在建造这些结构时,采用焊接效率高的单面埋弧焊、气电焊或电渣焊等大线能量(≥50kJ/cm)焊接方法的趋势也日益增强。为大幅度提高焊接效率,