9Ni钢埋弧自动焊接工艺试验研究  

Research and test of automatic submerged arc welding technology for 9%Ni steel

作　　者：李卫国 LI Weiguo(Xinjiang Petroleum Engineering Co.,Ltd.,Karamay 834000,China)

机构地区：[1]中油(新疆)石油工程有限公司,新疆克拉玛依834000

出　　处：《电焊机》2019年第5期74-78,共5页Electric Welding Machine

摘　　要：为了验证国产焊材与国产9Ni钢材在埋弧自动焊接工艺上的焊接适应性,选用12mm和20mm板厚的国产9Ni钢板、三种焊接参数(热输入量大、中、小)完成了9Ni钢埋弧自动焊横焊位置的焊接工艺试验,并通过焊接接头力学性能(包括:拉伸、弯曲、低温冲击、CTOD及DWTT)和显微组织验证、分析和整理不同焊接参数及板厚的焊接接头性能,获得国产焊材与国产9Ni钢材埋弧自动横焊焊接接头的性能试验报告,各项指标满足标准规范要求,验证了国产焊材与国产9Ni钢板的焊接适应性和匹配性。In order to verify the welding adaptability of domestic welding materials and 9Ni steel in automatic submerged arc welding technology,domestic 9Ni steel plates with thickness of 12 mm and 20 mm and three welding parameters (large,medium and small heat input) are selected to complete the welding technology tests of 9Ni steel in the horizontal position of automatic submerged arc welding. By verifying, analyzing and arranging the microstructures and mechanical properties (including tension,bending,low temperature impact, CTOD and DWTT) of welded joints with different welding parameters and plate thicknesses,the performance test report of automatic submerged arc horizontal position welded joints of domestic welding materials and 9Ni steel is obtained. Each index meets the requirements of standard specifications and verifies the welding adaptability and matching between domestic welding materials and 9Ni steel plate.

关 键 词：9NI钢 埋弧自动焊 力学性能 低温韧性 

分 类 号：TG457.11[金属学及工艺—焊接]