摘要
S32304双相不锈钢综合了铁素体和奥氏体有益的性能,其焊接工艺与常规不锈钢材料的焊接有所不同,通过改进坡口形式,采用不对称X型坡口,尽可能采用小的焊接电流和较快的焊接速度。为了减少并防止焊缝和热影响区生成单相或数量较多的铁素体组织和晶粒粗大,采用窄焊缝薄层焊,控制层间温度小于100℃,有效减少了热量输入,解决了双相不锈钢现场焊接的难题,确保双向不锈钢在施工现场复杂环境情况下进行焊接,获得优异的耐腐蚀性能和机械性能。
S32304 duplex stainless steel composite ferrite and austenite beneficial properties,the performance of the welding process are different from conventional welding stainless steel material,by improving the form of groove,using asymmetric X groove,as far as possible use small welding current and welding speed faster. In order to reduce and prevent the welding seam and heat affected zone of single-phase organization and coarse grains or more number of ferrite,the narrow seam welding thin layer,control layer between the temperature less than 100 ℃,effectively reduce the heat input,solve the problem of the scene of the duplex stainless steel welding,to ensure that the two-way stainless steel in the construction site welding under complex environmental condition,with excellent corrosion resistance and mechanical properties.
出处
《电焊机》
2015年第8期225-228,共4页
Electric Welding Machine
关键词
双相不锈钢
焊接工艺
窄间隙薄层焊
层间温度
duplex stainless steel
welding process
narrow seam welding thin layer
interpass temperature
