超低温奥氏体不锈钢焊条电弧焊工艺评定试验  

Arc Welding Procedure Qualification Test withAustenitic Stainless Steel Electrodes for Ultra Low Temperature Application

作　　者：王文杰 Wang Wenjie

机构地区：[1]海装沈阳局驻大连地区第三军事代表室,辽宁大连116113

出　　处：《一重技术》2021年第6期48-51,共4页CFHI Technology

摘　　要：采用全奥氏体不锈钢E310焊条在40 mm厚304LN不锈钢母材上进行电弧焊工艺评定试验,焊后经过570℃×1 h消除应力热处理和3次循环的-196℃深冷处理,通过无损检测和性能试验,-196℃冲击功50 J以上,评定结果合格,解决焊接接头超低温韧性薄弱的问题。通过评定试验,为某低温项目不锈钢材料的选择、焊接工艺、热处理工艺等提供参考。An arc welding procedure qualification test has been carried out with E310 full-austenitic stainless steel electrodes on a 40 mm thick 304LN base plate.After welding,the plate subjected to the heat treatment at 570℃for 1 hour and three cycles of subzero treatment at-196℃.The non-destructive test and mechanical test say that the test plate has impact energy of 50J and above at-196℃.The welding procedure is successful in the qualification test and can be used to solve the problem about the low toughness of welded joints at ultra-low temperature.

关 键 词：304LN不锈钢 -196℃ 冲击韧性 深冷处理 不锈钢焊条 

分 类 号：TG42[金属学及工艺—焊接]