Controllable gas-assisted light alloy metal plate cold mold hot forming method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AVIC BEIJING AERONAUTICAL MFG TECH RES INST
- Publication Date
- 2021-12-24
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Abstract
Description
technical field
[0001] The invention relates to the technical field of cold mold thermoforming, in particular to a controllable gas-assisted cold mold thermoforming method for light alloy sheet metal. Background technique
[0002] High-performance light alloys (high-strength aluminum alloys, titanium alloys) are important main materials for aerospace, automobiles, and high-speed rail. Complex light alloy sheet metal integral parts are ideal structures for carrying equipment to achieve lightweight and high reliability. However, light alloys have poor plasticity at room temperature, low ductility, severe springback after forming, and it is difficult to form complex shapes. If the method of block forming and re-welding is adopted, there are long welds and cross welds, which seriously restrict the reliability of the parts. At the same time, the shape distortion caused by welding stress cannot guarantee the overall accuracy of the parts; multi-pass forming and re-welding, The p...