Experimental Research on Metal Deformation during Cone Roll Piercing

To get the law of metal deformation of the work piece being rolled with the cone roll piercing mill,rolling jamming experiment and measurements of wall thickness of different work-piece sizes were conducted,based on which law of the wall thickness variation is calculated and analyzed.It is observed that during piercing,wall thickness of the work-piece being rolled is getting increased obviously.Principles con cerning tool design and parameter setting of the mill are also emphasized.