Laminated titanium-alloy thin-plate assembled connecting method

A combined connection and titanium alloy technology, which is applied in welding equipment, metal processing equipment, other manufacturing equipment/tools, etc., can solve the problems that cannot be broken through, titanium alloy cannot be formed into high-precision and complex components, and achieve no residual stress and avoid joints Reduced strength and the effect of reducing the number of parts

Active Publication Date: 2007-09-05
SICHUAN FUTURE AEROSPACE IND LLC
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to overcome the defects that titanium alloys cannot form high-precision complex components and cannot break through the production technology of 1000×2000mm large-scale multi-layer titanium plates, and provide a method for combining and connecting multi-layer titanium alloy sheets. Forming, that is, using the thermal creep characteristics of titanium alloys at about 600 °C and the superplastic properties at about 900 °C to produce multi-layer hollow titanium alloy structural plates of 1000 × 2000 mm and thickness of 2 to 10 mm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1. Cutting

[0017] Select a titanium alloy plate with thermal creep characteristics at 600°C, superplasticity at 900°C, and a thickness of 0.2-5.0mm, and calculate the high-temperature deformation of titanium alloy plates with different thicknesses and the material flow during inflation molding , determine the scaling factor and blanking size, and use high-pressure water cutting machine for precise blanking (the accuracy of water cutting equipment is ±0.05mm, produced by PAR Company in the United States), the effective processing size is 2000×4000×300mm, water cutting The main purpose of blanking is to avoid the formation of metal eutectic layer during cutting, which will affect the welding quality of the subsequent process.

[0018] 2. Pickling

[0019] Soak the cut board in the weak acid solution for 50-60 minutes, then add manual assisted brushing, and then rinse with clean water to achieve the purpose of degreasing and cleaning the surface of the material.

[002...

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Abstract

A technology for combining multiple layers of Ti-alloy sheet includes such steps as blanking, acid washing, baking, sticking protective film, coating welding inhibitor, removing said protective film, welding technological edges, installing die set, heating the forming apparatus, diffusion joining, pneumatic expansion shaping, cooling and removing said technological edges. Its product can be used for wing, fin, or blade.

Description

technical field [0001] The invention relates to a combined connection method of multi-layer titanium alloy thin plates. Background technique [0002] Since humans discovered titanium in 1790 and entered industrialization in 1951, titanium has gradually shown its unique properties. It not only has the superior performance of metal structural materials, but also has ten times the reserves of copper. It is the "third metal" after iron and aluminum, and is called "space metal". From the perspective of the use of titanium, the amount of titanium used by a country marks the strength of the country's technological level, military strength, and economic strength. Therefore, it is very necessary to promote the use of titanium and give full play to the superiority of titanium properties to promote industrial development and enhance the vitality of product competition, and it is also the direction of the development of modern military science and technology. [0003] Aluminum alloy i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B23K20/22B23K20/18B23K20/24B21D26/02B21D26/021
Inventor 韩华
Owner SICHUAN FUTURE AEROSPACE IND LLC
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