Self-weight thermal forming process for titanium alloy thin-wall cylindrical part

Abstract

The invention relates to a self-weight thermal forming process for a titanium alloy thin-wall cylindrical part, which is characterized in that under the action of self-weight of a thermal forming clamp, a pressure instead of a dynamic force is generated on the titanium alloy thin-wall cylindrical part; and the thermal forming of the titanium alloy thin-wall cylindrical part is completed in a vacuum furnace. The used clamp of the invention has a simple structure, a low manufacturing cost and a short development and application period. The whole process is a novel idea and provides a new approach to the forming of the thin-wall titanium alloy cylindrical parts. The process is significant in technical innovation and economic benefit, and can be widely applied in related technical fields.

Description

Technical field: [0001] The invention relates to a thermoforming technology for a titanium alloy thin-walled cylindrical part, and in particular provides a self-gravity thermoforming process for a titanium alloy thin-walled cylindrical part. Background technique: [0002] In the prior art, for titanium alloy thin-walled cylindrical parts, since the main body of the part is titanium alloy material, it cannot be formed at room temperature. According to the conventional process, it is necessary to adopt coupled mold thermocompression forming or inflation superplastic forming. However, the structure of the tooling used in these two schemes is complicated, and the equipment is required to have functions such as hot pressing or complex gas supply, which leads to long manufacturing cycles and high manufacturing costs. [0003] Titanium alloy material σ 0.2 / σ b The ratio is high, the rebound is large during processing and forming, and it is easy to crack. It is difficult to form...

AI Technical Summary

Problems solved by technology

However, the structure of the tooling used in these two schemes is complex, requiring equipment with hot-pressing functions or complex gas supply functions, and the manufacturing cycle is long and the manufacturing cost is high.

[0003] Titanium alloy material σ 0.2 / σ b The ratio is high, the rebound is large during processing and forming, and it is easy to crack. It is difficult to form titanium alloy sheets at room temperature, especially when forming parts with profiles using a coupled mold, cracks are easily generated. Conventional cold stretching and cold expansion The model cannot be used, and the thermoformed parts of the coupled mold with a large size will not have a good forming effect, and the surface of the part is prone to wrinkles.

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