| SU304/Q235B不锈钢复合管环焊及补焊工艺研究 |
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| 引用本文： | 张 君,赵红波,李中祥,牛 辉,姜 帆,李 鹏,赵颇如.SU304/Q235B不锈钢复合管环焊及补焊工艺研究[J].焊管,2022,45(12):20-27. |
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| 作者姓名： | 张 君 赵红波 李中祥 牛 辉 姜 帆 李 鹏 赵颇如 |
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| 作者单位： | 1. 宝鸡石油钢管有限责任公司，陕西 宝鸡721008；2. 国家石油天然气管材工程技术研究中心，陕西 宝鸡721008； 3. 上海宝世威石油钢管制造有限公司，上海 200941； 4. 中国石油天然气集团有限公司， 北京 100007 |
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| 摘 要： | 针对SU304/Q235B Φ820 mm×8（6.7+1.3）mm不锈钢复合管生产制造过程中内外断弧补焊、烧穿补焊、管内304不锈钢覆层损伤堆焊以及管道建设施工环缝焊接进行工艺试验研究。通过试验分析，采用的U形坡口GTAW+SMAW环焊、内外断弧SMAW补焊、烧穿SMAW补焊及覆层GTAW/SMAW ERNiCrMo-3堆焊工艺，均可使焊缝理化性能达到标准要求，且抗腐蚀性能良好。同时，对不同焊接坡口、焊接工艺及错边量对焊缝组织及性能影响进行了对比研究，进一步掌握了不锈钢复合管熔焊关键技术，对实际生产及管道施工提供参考。
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| 关 键 词： | 不锈钢复合管 Q235B 环焊工艺 补焊工艺 |
Research on Ring Welding and Repair Welding Technologies of SU304/Q235B Stainless Steel Composite Pipe |
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| ZHANG Jun,ZHAO Hongbo,LI Zhongxiang,NIU Hui,JIANG Fan,LI Peng,ZHAO Poru.Research on Ring Welding and Repair Welding Technologies of SU304/Q235B Stainless Steel Composite Pipe[J].Welded Pipe and Tube,2022,45(12):20-27. |
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| Authors: | ZHANG Jun ZHAO Hongbo LI Zhongxiang NIU Hui JIANG Fan LI Peng ZHAO Poru |
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| Affiliation: | 1. Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China; 2. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008, Shaanxi, China; 3. Shanghai BSW Petroleum Steel Pipe Manufacturing Co., Ltd., Shanghai 200941, China; 4. China National Petroleum Corporation, Beijing 100007 |
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| Abstract: | The process of repair welding of internal and external broken arc, repair welding of burn through, surfacing of 304 stainless steel coating damage in the pipe and ring seam welding in pipeline construction were studied in the production and manufacturing process of SU304/Q235B Φ820 mm × 8（6.7+1.3） mm stainless steel composite pipe. Through the test and analysis, the physical and chemical properties of welds of U-groove GTAW+SMAW ring welding, internal and external broken arc SMAW repair welding, burn through SMAW repair welding and GTAW/SMAW ERNICRMO-3 surfacing welding process all meet the standard requirements, and the anti-corrosion performance is good. At the same time, the effects of different groove, welding process and the amount of misalignment on the weld microstructure and performance were compared and tested. The basic rules and important matters of stainless steel composite pipe fusion welding were basically mastered through the study, which provided the references for the actual production and pipeline application. |
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| Keywords: | stainless steel composite pipe Q235B ring welding repair welding technology |
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