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C-276合金冷金属过渡焊接焊缝熔敷金属耐蚀性研究
引用本文:闫宏伟,谷文,高殿宝,莫文林.C-276合金冷金属过渡焊接焊缝熔敷金属耐蚀性研究[J].压力容器,2013(11):23-28.
作者姓名:闫宏伟  谷文  高殿宝  莫文林
作者单位:[1]中国第一重型机械集团大连加氢反应器制造有限公司,辽宁大连116113 [2]中国科学院金属研究所,辽宁沈阳110016
基金项目:中国科学院重点部署项目(KGZD-EW-XXX-2)
摘    要:摘要:C-276合金在氧化性和非氧化性酸中都具有很好的耐腐蚀性,所以在精对苯二甲酸(PTA)装置中应用较多。在化工容器设计时,虽然没有明确规定哪些场合使用复合板或堆焊,但是,考虑到堆焊层是铸造枝晶状奥氏体组织,复合板是轧制孪晶奥氏体组织,而且堆焊的热过程比复合的热过程复杂。以C-276钢板为参考,研究了c-276合金冷金属过渡(CMT)焊接焊缝熔敷金属的耐蚀性,供盯A装置制造厂参考。

关 键 词:C-276  冷金属过渡  熔敷金属  耐蚀性  析出相

Investigation of C -276 Weld Metal Corrosion Resistance after Cold Metal Transfer(CMT) Welding
Affiliation:YAN Hong- wei ,GU Wen, GAO Dian- bao ,MO Wen- lin2 (1. China First Heavy Industries Dalian Hydrogenation Reactor Manufacturing Co., Ltd., Dalian 116113, China; 2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China)
Abstract:C -276 alloy has good corrosion resistance in oxidizing and non -oxidizing acids, so it is wide-ly used in purified terephthalic acid (PTA) device. In the chemical vessel design, it does not specify the using of composite board or surfacing. Considering the surfacing layer microstructure is dendritic austen ite, the composite board microstructure is twinned austenite, and the thermal process of welding is complex than that of composite. We have study C - 276 weld metal corrosion resistance ater cold metal transfer (CMT) welding,which is useful for PTA device fabrication.
Keywords:C - 276  cold metal transfer(CMT)  weld metal  corrosion resistance  precipitated phase
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