焊接用超马氏体不锈钢.pdf

1 焊接用超马氏体不锈钢和中低合金耐热钢 With super martensitic stainless steel welding 东北特钢集团大连特殊钢丝有限公司徐效谦 The Dongbei special steel group dalian special steel co., LTD Xu Xiaoqian 摘要: 工程材料需要在大功率、重载荷条件下工作, 对材料的耐腐蚀性能、强度和韧性、耐磨性能和疲劳寿命均有严格、高标准要求。因为工程结构复杂, 工程所用大型零部件必须采用焊接成形, 材料的焊接性能尤为重要。本文从分析现用各类型不锈钢焊接性能着手, 指出超马氏体钢焊材是最佳选择。同时简要介绍了超马氏体钢焊材的优越焊接性能,实用牌号,以及这些牌号的生产工艺和技术参数。 Abstract: Engineering materials used for the hydropower and nuclear power plants need to work under the condition of high power, heavy load and corrosion resistance of materials, strength and toughness, wear resistance and fatigue life are all in strict and high standard requirements. Because plicated engineering structure, engineering used large parts must adopt welding, welding performance is particularly important. Based on the analysis of current various types of stainless steel welding performance, Points out that the super Ma Shigang weld material is the best the same time, this paper briefly introduces the super Ma Shigang excellent welding performance of welding material, the practical brand, as well as the brand of production process and technical parameters. 关键词:超马氏体焊材,逆转奥氏体,韧化相,焊接性能,焊缝强韧性。 Key words:Super martensitic welding materials, Reverse austenite, Toughening phase, The welding performance, Weld is strong toughness. 作为焊接材料, 现用不同类型不锈钢各有利弊: 传统马氏体钢具有一定的耐均匀腐蚀性能, 焊后焊口和热影响区显微组织为针状马氏体, 具有很高的强度和硬度, 但塑性和韧性严重不足, 由于组织应力很大,