试论直缝焊管管坯边缘双半径成型

Discussion on Process of Edge Dual-radius Forming of Blank for Straight Welded Pipe

为解决直缝焊管带材最边缘在现有成型方法下变形不充分的问题,提出了边缘双半径成型新方法。指出了现有成型方法存在的不足,介绍了边缘双半径成型方法的内涵、成型过程、作用及优点等,并结合生产实践验证了该新成型方法的有效性和推广应用价值。

Addressing the problem that it is impossible to get desirable outermost edge deformation of the blank of the straight welded pipe by means of the conventional forming process, the new process of edge dual-radius forming is introduced. Involved here in the paper are the shortcomings of the said conventional forming process, the definition of the edge dual-radius forming process, its procedure, function, advantages and effectiveness verified by relevant operation practice as well as why the new process is worth spreading up.