新型螺旋焊管机组焊垫辊辊型

New Type Roller Contour of Bonding Pad Roll for SSAW Pipe Unit

螺旋焊管机组焊垫辊的辊面形状对焊管成型、焊接质量有较大的影响,不当的辊面形状有可能产生错边、内焊裂纹等缺陷。根据宝鸡石油钢管有限责任公司承揽的印度“东气西输管线”钢管生产工艺要求,设计了一种复合曲线辊型的焊垫辊。新设计的辊型既避免了外焊坡口边缘与辊面的点弧接触,有效防止外焊焊趾沟槽的产生,又保留了焊垫辊原有的工艺性能,获得了较好的焊道质量。

Roller contour of bonding pad roll for SSAW pipe unit has a sensitive effect on welded pipe forming and welding quality,improper roller contour may result the occurence of defects such as offset and crack of inside-welding.According to the procedure requirement of India East-West Pipeline Project contracted by Baoji Petroleum Steel Pipe Co.,LTD,the new type of bonding pad roll with complex curve roller contour is design,it avoid point and arc touching between the bevel edge of outside welding and roller surface,also can prevent groove outside welding toe from occurence,at the same time the original procedure property of bonding pad roll is hold,and better quality of welding path is obtained.