复合钢管中镍基合金喷焊层对焊缝裂纹敏感性的影响-Read.PDFVIP

·32 · 焊接 　2004 ( 1) 复合钢管中镍基合金喷焊层对焊缝裂纹敏感性的影响 ( ) 山 东 凤 凰 制 药 股 份 有 限 公 司 东营市 　257400 　　徐静芳 ( ) 中石化管道储运公司东营首站 东营市 　257067 　　李长印 ( ) 胜利油田天峰科工贸有限责任公司 东营市 　257000 　　张宝岭 摘要 　通过模拟实际焊接试验 ,研究了镍基合金喷焊层对焊接裂纹敏感性的影响。结果表明 ,镍基合金喷焊 层成分对奥氏体不锈钢焊缝的裂纹敏感性有明显的影响。喷焊层越厚 , 即焊缝中所熔的喷焊层成分越多 ,焊缝金 属热裂纹敏感性越大。原因是喷焊层中所含 Ni ,Cr ,B ,Si 元素熔入焊缝增加了焊缝裂纹敏感性。 关键词 : 　喷焊层 　裂纹敏感性 　不锈钢 　焊接 INFL UENCES OF NICKEL - BASED ALLOYS SPRAYING LAYER ON WELD CRACK SENSITIVITY OF COMPOUND STEEL PIPE Shandong Fenghuang Pharmaceutical Co. Ltd 　　　　　　　　　　　Xu Jingfang SINOPEC Pipeline Storage Transport Branch Co. Dongying Station 　　Li Changyin 　　 Shengli Oil Field Tianfeng Technical Industrial Commercial Co. ,Ltd 　　Zhang Baoling Abstract 　The influences of nickel - based alloys spraying layer on the weld crack sensitivity were studied through simulating actual welding experiment in this paper. The results showed that the compositions of nickel - based alloys spraying layer obviously affected the crack sensitivity of austenite stainless - steel weld. With the spraying layer thicken ing , the more compositions of nickel - based spraying layer melted into the weld , and then the crack sensitivity of weld metal increased. The reason was th