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l245nb yu 316l gang guan dui han gong yi
Author(s): 
Pages: 81-83
Year: Issue:  4
Journal: Welding Technology

Keyword:  L245NB316L管对接焊接工艺;
Abstract: 针对高酸性气田用钢L245NB和316L钢管进行对接焊,采用钨极氩弧焊打底,焊条电弧焊填充盖面,通过反复工艺性试验,确定了焊接材料、焊接工艺参数,并对焊接接头进行了X射线探伤、力学性能试验、金相分析及抗腐蚀性能检测。结果表明:焊接接头X射线探伤检测为Ⅱ级,焊接接头各项力学性能指标均合格,焊缝区金相组织为奥氏体+鳞片状铁素体+树枝状铁素体,抗晶间腐蚀倾向检测与抗Cl-应力腐蚀性能检测试件均未见裂纹,试件失重腐蚀气相、液相平均腐蚀速率分别为0.024 6,0.046 0 mm/a,拟订的L245NB和316L钢管对焊工艺方案是可行的。
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