公开(公告)号：US11660653B2

公开(公告)日：2023-05-30

申请号：US17339460

申请日：2021-06-04

Applicant: Harbin Institute of Technology

Inventor： Cong Han ,  Shijian Yuan ,  Xiaolei Cui

IPC: B21D26/00 ,  B21D26/041

CPC classification number: B21D26/041

Abstract: The present disclosure discloses an ultra-low pressure liquid filling forming system for a special-shaped component, including a control system, a supercharger, a driving device, a preforming unit, and a final forming unit. The present disclosure further provides an ultra-low pressure liquid filling forming method for a special-shaped component, including the following steps: S1: making an equal diameter cylindrical coil blank with an overlapping part in a longitudinal direction by using a plate blank; S2: bulging the equal diameter cylindrical coil blank into a variable diameter cylindrical prefabricated coil blank; S3: cutting and welding the overlapping part remaining on the variable diameter cylindrical prefabricated coil blank in the axial direction to obtain a variable diameter prefabricated tube blank; S4: filling liquid and press-forming the variable diameter prefabricated tube blank, so that the variable diameter prefabricated tube blank occurs compressive deformation, thereby forming the special-shaped component.