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Composite structured corrugated pipe by diffusion welding

A diffusion welding and composite structure technology, applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve the problems that composite structure bellows cannot be realized, achieve no welding stress and strength drop, improve pressure resistance and Anti-instability, the effect of reducing the length

Inactive Publication Date: 2010-01-27
北京智创联合科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These welding methods will be subject to many restrictions or even cannot be realized in the manufacture of composite structure bellows

Method used

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  • Composite structured corrugated pipe by diffusion welding
  • Composite structured corrugated pipe by diffusion welding

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Experimental program
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Embodiment Construction

[0029] 1. Manufacture circular (or square or other shapes) foil plate materials by mechanical processing, laser processing, electrical processing, etc.;

[0030] 2. Clean the surface of the material through various surface treatments to remove all dirt on the surface of the material;

[0031] 3. Realize the precise control of the boundary line between the welding area and the non-welding area of ​​the diffusion-welded composite structure bellows by applying surface protective glue and engraving;

[0032] 4. Stop welding for parts that do not require diffusion welding;

[0033] 5. For the parts that need to be welded by diffusion welding, the surface modification treatment of materials is carried out by means of ion implantation, deposition, coating, etc. (some grades of materials may not be carried out);

[0034] 6. Assemble the materials according to a certain assembly relationship and assembly sequence;

[0035] 7. Under certain temperature, protective environment (includi...

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PUM

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Abstract

The invention provides a composite structured corrugated pipe by diffusion welding, belonging to the field of corrugated pipe manufacturing. In the invention, the manufacturing of the composite structured corrugated pipe is realized by a method of 'diffusion welding' + 'mechanical processing' + 'shaping' with the main process as follows: thin-wall blank preparation, surface cleaning, surface modification treatment, stop welding treatment, diffusion welding, mechanical processing, shaping and the like. Compared with the composite structured corrugated pipe manufactured by other methods, the composite structured corrugated pipe manufactured by the invention has good fatigue property which is over 1 million times, strong compression capacity, adjustable rigidity, high compression rate which is greater than 95%, micromation inner bore, compact structure, high precision of geometric dimension, strong anti-unstability capacity, precise and controllable welding line outline, adjustable welding line width and the like. The corrugated pipes with the outline of a round, a square and other types of shapes can be manufactured by utilizing the invention, which can be used as hydraulic pressure, air pressure, transfer pipeline installation displacement and angle compensation element, supercharging element, elastic compensation element and air hole damp element, and can also be used as the measuring element of a pressure gauge and an altimeter, thus providing composite structured corrugated pipe products with good performance for related industries.

Description

1. Technical field [0001] The invention can be applied to displacement compensation and angle compensation for installation of hydraulic pressure, air pressure, and conveying pipelines, can be used as an elastic compensation element for valve products, can be used as a pore damping element for valve products, and can be used for measurement of pressure gauges and altimeters It can also be used as a pressure booster for pneumatic and hydraulic lines. 2. Background technology [0002] Composite structure bellows is made of inner and outer two layers (or more than two layers) of bellows, which has better sealing performance. Because it has multiple independent enclosed spaces, it can realize the self-pressurization of pneumatic and hydraulic pipelines, which provides a new design idea for the design of elastic components for aviation, aerospace, military, and ship valve products. [0003] At present, composite structure bellows are rarely used domestically and internationally....

Claims

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Application Information

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IPC IPC(8): F16L11/15
Inventor 杨建国吴维贵
Owner 北京智创联合科技股份有限公司
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