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对 HU- METAL法卷制成型大直径直缝焊钢管残余应力进行了分析讨论。根据HU- METAL法成型原理及试验表明 ,此法可使焊管总体残余应力趋于均匀 ,并对减少残余应力有较为明显的效果 ,与同钢级、同规格的冷扩径 UOE钢管相近
The residual stress of HU-METAL rolling large diameter straight seam welded steel pipe was analyzed and discussed. According to HU-METAL method, forming principle and experiments show that this method can make the overall residual stress of welded pipe tend to be uniform, and reduce the residual stress has a more obvious effect, and the same grade, with the specifications of the cold expanded UOE steel pipe similar