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Manufacturing method of titanium alloy hollow component

A technology of hollow components and manufacturing methods, which is applied in the field of manufacturing titanium alloy thin-walled hollow parts with ribs, can solve the problems of rectifier blade diffusion connection front edge defects, titanium alloy structure changes, and low production efficiency, so as to save raw materials, The effect of high production efficiency and efficiency improvement

Active Publication Date: 2012-11-07
BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The side strips of the rectifying blades and the inner and outer plates are connected together by diffusion, and the diffusion is performed by mechanical pressure. Due to the uneven load, it is easy to cause defects at the leading edge of the rectifying blade diffusion connection, resulting in waste products
When forming the inner layer, due to the large deformation of the plate, during the air intake process, if the air intake speed is too fast, it is easy to cause the inner layer plate to be blown out. If the air intake speed is slow, the forming time will be longer. Titanium The alloy structure will change, resulting in a decrease in properties, while using a low forming rate, the production efficiency is also low
Using the SPF / DB process to manufacture rectifier blades, each process cycle can only produce 2 pieces, continuous production can produce 4 pieces per day, and the production efficiency is low

Method used

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  • Manufacturing method of titanium alloy hollow component
  • Manufacturing method of titanium alloy hollow component
  • Manufacturing method of titanium alloy hollow component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) According to the structural characteristics of the hollow member, it is decomposed into the structural form of the skin 1 and the rib 2, and the structural form of the inner sheath 4 and the outer sheath 3 is determined according to the hollow part of the hollow member, such as figure 1 shown;

[0039] (2) Process or form the structural parts of the skin 1 and the ribs 2 according to the decomposed structural form, and manufacture the skin 1 and the ribs 2 by machining, thermoforming, superplastic forming, and forging;

[0040] (3) Processing or forming the inner sheath 4 and the outer sheath 3. Process the inner sheath 4 and outer sheath 3 of titanium alloy by machining, precision casting, welding, etc., or process the inner sheath 4 and outer sheath 3 of A3 steel by machining, precision casting, welding, etc.;

[0041] (4) According to the structural form of the component, the structural components of the processed skin 1 and rib 2 are combined with the inner cov...

Embodiment 2

[0045] 1. According to the structural characteristics of the hollow member, it is decomposed into the structural form of the belt rib 6, and the structural form of the inner sheath 4 and the outer sheath 3 is determined according to the hollow part of the hollow member, such as figure 2 shown;

[0046] 2. Process or form the structural components of the pellicle belt ribs 6 according to the decomposed structural form, and adopt the method of mechanical processing and forging to manufacture the pellicle belt rib structure 6, such as image 3 shown;

[0047] 3. Process or form the inner sheath 4 and the outer sheath 3. Process the inner sheath 4 and outer sheath 3 of titanium alloy by machining, precision casting, welding, etc., or process the inner sheath 4 and outer sheath 3 of A3 steel by machining, precision casting, welding, etc.;

[0048] 4. According to the structural form of the components, combine the structural parts of the processed montage belt ribs 6 with the inn...

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Abstract

The invention relates to a manufacturing method of a titanium alloy thin-wall ribbed hollow component. The method comprises the following steps that: a. the titanium alloy hollow component is decomposed into a stressed-skin and ribbed structure form or a stressed-skin ribbed structure form according to the structure features of a hollow component, and an inner sheath and an outer sheath structureforms are determined according to a hollow part of the hollow component; b. the stressed-skin and ribbed or the stressed-skin ribbed structural part is processed or formed according to the decomposedstructure forms; c. the inner and the outer sheaths are processed or formed; d. the stressed-skin and ribbed or the stressed-skin ribbed structural part being well processed is assembled with the inner and the outer sheaths, the inner and the outer sheaths are sealed in a welding way and are vacuum encapsulated, and the vacuum degree is 1.0 *10-3Pa; e. the dispersion connection of each structuralpart is realized through a hot isostatic pressing method; f. surface treatment on each prefabricated structural part is undertaken so as to prepare the hollow structural component. The manufacturing method has high production efficiency; a plurality of components can be prepared through one technical circulation; and the welding rate is more than 95 percent.

Description

technical field [0001] The invention belongs to the titanium synthesis technology, and relates to a method for manufacturing a thin-walled ribbed hollow part of a titanium alloy. Background technique [0002] Superplastic forming / diffusion bonding (SPF / DB) technology has been greatly developed by the needs of the aerospace field and has developed into a mature technology for the manufacture of titanium alloy structures for aircraft and their engines. At present, SPF / DB technology is used to manufacture titanium alloy hollow components, which are divided into two-layer, three-layer, and four-layer hollow components according to the number of layers of the plate. The SPF / DB process mainly includes: material preparation, solder stop flux coating, pocket sealing welding, diffusion bonding and superplastic forming, machining of part blanks after forming, and surface treatment. [0003] However, with the large-scale production of titanium alloy components by SPF / DB technology, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P17/00B23K20/00B23K20/22
Inventor 赵冰廖金华
Owner BEIJING AERONAUTICAL MFG TECH RES INST
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