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Method for forming titanium alloy sheet metal part

A sheet metal part, forming processing technology, applied in the field of aviation titanium alloy sheet metal parts, can solve the problems of poor manufacturability, low bending ability, low plasticity, etc. Effect

Inactive Publication Date: 2014-08-20
SHENYANG AIRCRAFT CORP
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Problems solved by technology

[0002] Aircraft titanium alloy sheet metal parts have low plasticity at room temperature and are difficult to process structural materials. They have poor manufacturability, high deformation resistance, large springback, poor heating temperature control, and are prone to hydrogen embrittlement; they are sensitive to residual stress and notch stress concentration. Low bending capacity, low plasticity, low elongation, and easy instability. Therefore, it is only suitable for forming titanium alloy sheet metal parts with simple shapes at room temperature

Method used

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  • Method for forming titanium alloy sheet metal part

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Embodiment Construction

[0020] A method for forming and processing titanium alloy sheet metal parts, comprising the steps of:

[0021] 1) Clean the upper mold, the lower mold and the titanium alloy sheet metal parts of the forming mold with acetone, and coat the upper mold, the lower mold and the titanium alloy sheet metal parts with graphite;

[0022] 2) Turn on the thermoforming machine, heat the upper and lower molds to 630-650 degrees, place the titanium alloy sheet metal parts on the lower mold, and preheat at 630-650 degrees for 5-10 minutes;

[0023] 4) After the temperature of the titanium alloy sheet metal parts and the lower mold is balanced, the upper and lower molds are closed, and the temperature is kept at 630-650 degrees. The clamping pressure is controlled at 80 tons, and the pressure is kept for 15 minutes; The gap distance between the mold and the lower mold is adapted to the thickness of the titanium alloy sheet metal part;

[0024] 4) Control the thermoforming machine to open the...

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Abstract

The invention provides a method for forming a titanium alloy sheet metal part. The method is simple, and effectively achieves heated equipment, devices and high temperature resistant moulds in the titanium alloy sheet metal part heating forming method in the prior art and lubrication and pollution prevention under high temperature, heat preservation and pressure maintaining are mainly carried out on titanium alloy materials for a certain time for forming at the temperature of stress relaxation and the creeping state, and high-quality and high-stability forming can be carried out on the titanium alloy sheet metal part successfully.

Description

technical field [0001] The invention mainly relates to the field of aviation titanium alloy sheet metal parts, in particular to a method for forming and processing titanium alloy sheet metal parts. Background technique [0002] Aircraft titanium alloy sheet metal parts have low plasticity at room temperature and are difficult to process structural materials. They have poor manufacturability, high deformation resistance, large springback, poor heating temperature control, and are prone to hydrogen embrittlement; they are sensitive to residual stress and notch stress concentration. Low bending capacity, low plasticity, low elongation, and easy instability. Therefore, it is only suitable for forming titanium alloy sheet metal parts with simple shapes at room temperature. However, the processing of plate alloy sheet metal parts with complex shapes and high requirements on part quality and forming stability is a problem that those skilled in the art need to solve urgently. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/06B21D37/01
Inventor 张伟强李兴云
Owner SHENYANG AIRCRAFT CORP
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