Multi-stage ultralow-temperature shape and surface integrated incremental forming method and obtained plate part

Abstract

The invention belongs to the field of plate forming, particularly discloses a multi-stage ultralow-temperature shape and surface integrated incremental forming method and an obtained plate piece, and solves the problems that in the prior art, when an incremental forming process is applied to machining a workpiece, the forming limit of a metal plate is low, and the surface quality of a formed piece is insufficient. According to the process, accurate forming of the macroscopic geometrical shape of the component is achieved through ultralow-temperature incremental forming, then a surface layer gradient gradual change structure is prepared through surface rolling, and the formed component has excellent overall mechanical performance and surface performance. The forming method can be widely applied to ultralow-temperature incremental forming and ultralow-temperature incremental rolling processes for improving the forming limit of metal plates and improving the surface quality of formed parts.

Description

Technical field [0001] The present invention belongs to the field of progressive forming of plates, in particular to a composite forming process and obtained sheet parts that can simultaneously meet the macroscopic shape accuracy and surface performance of the forming member. Background [0002] The inventor found that in the process of progressive forming of metal sheets, there are two difficulties in the process of processing and forming curved components of metal sheets, first of all, aluminum alloys and other metal sheets have poor room temperature plasticity, small hardening capacity, complex stress state during overall forming, and are prone to cracking; secondly, although hot forming can overcome the limitation of low forming limit of metal sheets at room temperature, but its manufacturing cycle is long, high cost, can not meet the urgent needs of rapid product development and quality improvement, and the microstructure performance of metal sheets after heating is not easy...

AI Technical Summary

Problems solved by technology

[0003]Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a multi-stage ultra-low temperature form-surface-integrated progressive forming method and the obtained plate parts. It solves the problem of poor room temperature plasticity and small hardening ability of metal sheets at room temperature; at the same time, it avoids the problem of difficult control of the structure and properties of metal sheets after heating in the heat-assisted incremental forming process

Images