Method and device for the extrusion of a blank
By introducing axial and radial flow splitting and shear deformation into the blank extrusion process, the problems of uneven deformation and stress concentration in blank preparation are solved, high-quality blank preparation is achieved, and grain refinement and equipment life are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AVIC BEIJING INST OF AERONAUTICAL MATERIALS
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
AI Technical Summary
The existing blank extrusion process suffers from uneven deformation, localized stress concentration, and cracking, resulting in low production quality that fails to meet the requirements of high-end equipment manufacturing.
The main punch drives the billet to split along the axial and radial directions of the extrusion cylinder to form a main flow and a secondary flow. Combined with radial shear deformation, the multi-directional strain state and uniform strain distribution are achieved through the combined use of the split cone, shear ring and flow stabilizing forming bushing.
It improves the quality of blank preparation, reduces "bulging" defects and local stress concentration, promotes grain refinement, and enhances the strength of the blank and the service life of the equipment.
Smart Images
Figure CN122400340A_ABST