两种辊弯成型的方矩形管焊缝部位的检测分析

Inspection Analysis on Two Kind of Roll Forming Rectangular Pipe Weld

目前国内冷弯成型的大型方矩形钢管,大都采用辊弯直接成方成型工艺。以2家方矩形管生产企业的产品为例,介绍了方矩形钢管的两种不同成型工艺及其技术参数,并取样检测了成型方矩形管后焊缝部位的化学成分、力学性能等。检测分析结果表明,用辊弯直接成方成型工艺生产的大型方矩形钢管,完全可以保证焊缝质量。

Cold-bending formed rectangular pipe in China domestic almost adopt roll forming directly technology. Taking the case of China domestic a welded pipe factory and 2 rectangular pipe production enterprises, it introduced forming technique and its technology parameter of rectangular pipe. Sampling from mentioned 3 enterprises, chemical composition and mechanical property of rectangular pipe weld were detected. The result showed that gweat rectangular pipe produced through roll-forming method formed rectangular pipe can guarantee weld quality.