The deformation and flow of metal in the process of roll forging are much different from those of ordinary die forging, So are the design of its technology, preliminary forming dies and dressing dies.

• 辊锻过程中金属变形及流动,与一般模锻工艺相比存在较大的差异,因而其工艺设计及初成形道次模具、整形模具设计也不同于常规模锻工艺。