In view of the complexity and diversity of Invar alloy mould plate shape

the low efficiency and low quality of traditional processing methods

on the basis of actual production and referring to the experience of ship hull plates forming process

the adaptability of the rotary square punch and non-pair stamping technology on Invar mould plate forming was studied. The material characteristics

shape characteristics and forming process of Invar alloy are analyzed

and it is indicated that the rotary square stamping punch combined with the large tonnage oil press can effectively form the Invar alloy mold plate

and the forming error is less than the production demand.