Guide Shoe·Guide Disc—A Primary Discussion on Guiding Tools for 2-roll Rotary Piercing Process and Relevant Deformation Process

Described in the article are composition of the 2-roll rotary piercing deformation zones, and the development history of the guiding tools.Analyzed is the sequence of contact between the workpiece and the operational tool.i.e., the guide shoe or the guide disc during piercing deformation process.Elaborated are the separate characteristics of the guide shoe and the guide disc in the closed deformation zone, and the result of the test as performed with the piercing testmachine for the purpose of identifying the effect by the guiding tools on piercing efficiency. Taking the advantages of both the guide shoe and the guide disc into consideration, an idea for improving installation and operation processes for the guide shoe is put forward.