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A method for forming titanium alloy ultra-thin spherical part

A technology of titanium alloy and spherical segment, which is applied in the forming field of titanium alloy ultra-thin spherical segment parts, can solve problems such as easy wrinkling and cracking, failure to meet strength requirements, etc., achieve batch manufacturing, high yield rate, and reduce production costs Effect

Active Publication Date: 2019-12-20
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present invention provides a method for forming titanium alloy ultra-thin spherical parts, which solves the problem that the titanium alloy high-performance ultra-thin spherical parts formed in the prior art are easy to wrinkle and crack, and cannot meet the strength requirements

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  • A method for forming titanium alloy ultra-thin spherical part
  • A method for forming titanium alloy ultra-thin spherical part

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Embodiment Construction

[0023] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and accompanying drawings of the following embodiments are used to illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments, without departing from the spirit of the present invention Equivalent modifications, substitutions, and improvements are covered below.

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] In order to solve the technical problem of forming high-performance ultra-thin spherical parts of titanium alloys, the pre...

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Abstract

The invention relates to a forming method of a titanium alloy ultra-thin segment-shaped part. The method comprises the following steps that a titanium alloy sheet is placed between a lower mold and anupper mold of a forming tool, wherein the lower mold is of a hard metal structure with a segment-shaped groove, the segment-shaped groove is used for forming a hemispherical shell structure of the titanium alloy ultra-thin segment-shaped part, the upper mold is a medium-hard polyurethane soft mold with a preset thickness, a stepped through hole is formed in the thickness direction of the upper mold, and the stepped through hole is located right above the segment-shaped groove; punching is carried out on the upper mold, under the action of pressure, the titanium alloy sheet and the upper moldare laminated and are recessed and deformed towards the lower mold, and the hemispherical shell structure matched with the segment-shaped groove of the lower mold is expanded in the segment-shaped groove of the lower mold; and after the titanium alloy ultra-thin segment-shaped part with the hemispherical shell structure is formed, pressure release is carried out on the upper mold, the upper mold is restores to an original shape, the formed titanium alloy ultra-thin segment-shaped part is taken out from the lower mold, and annealing is carried out on the part.

Description

technical field [0001] The invention relates to the technical field of titanium alloy forming, in particular to a method for forming an ultra-thin spherical part of titanium alloy. Background technique [0002] The metal bellows storage tank is a new type of aerospace storage tank. Its material is titanium alloy. Titanium parts are widely used in aviation and aerospace fields due to their high specific strength, corrosion resistance, and oxidation resistance. It can realize the long-term storage of propellants, especially oxidants, and has the characteristics of good sealing, long filling storage period, stable center of mass, no shaking, wide adaptability, and hot gas pressurization, etc. [0003] The titanium alloy ultra-thin spherical part that can be flipped on the top is a metal diaphragm. The metal diaphragm is a key component in the metal bellows storage tank. The life of the metal diaphragm directly affects the life of the aircraft. The metal diaphragm is an ultra-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/10B21D37/10
CPCB21D22/10B21D37/10
Inventor 雷海龙陈福龙黄京东李晓华梁田
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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