武钢大线能量焊接系列钢的研发进展

Progress on Research and Development of Large Heat Input Welding Steel Series in WISCO

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。

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 industrialization of the steel series provided technical support for the demand of this series steel in China, effectively promoted 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.