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Single layer structured diaphragm and diaphragm capsule by diffusion welding

A diffusion welding, single-layer film technology, applied in the direction of bellows, welding equipment, non-electric welding equipment, etc., can solve the problems of difficult to achieve high sealing of components, the difference in cross-sectional size should not be too large, and the structural size requirements are strict. The effect of reduced welding stress and strength, increased fatigue strength, and precisely controllable precision

Inactive Publication Date: 2010-01-27
北京智创联合科技股份有限公司
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Problems solved by technology

The connection method of fusion welding has strict requirements on the structural size of the parts to be welded, that is, the difference in cross-sectional size of the two parts to be welded should not be too large, and the welding deformation is large
The connection method of mechanical clamping is not easy to achieve high sealing between components, and the assembly is complicated and the assembly cycle is long

Method used

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  • Single layer structured diaphragm and diaphragm capsule by diffusion welding

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Embodiment Construction

[0022] 1. Manufacture ring-shaped, square or other shaped diaphragms and blanks of machined parts through mechanical processing, laser processing, electrical processing, etc.;

[0023] 2. Clean the surface of the material through various surface treatments to remove the dirt on the surface of the parts;

[0024] 3. Accurate control of the boundary line between the welding area and the non-welding area of ​​the bellows is achieved by coating the surface protective glue and then engraving;

[0025] 4. Stop welding for parts that do not require diffusion welding;

[0026] 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, vapor deposition, coating, etc. (some grades of materials may not be carried out);

[0027] 6. Assemble materials according to a certain assembly relationship and assembly sequence;

[0028] 7. Diffusion welding is performed on the part where the material sh...

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Abstract

In the invention, the manufacturing of a single layer structured diaphragm and diaphragm capsule by diffusion welding is realized by the method of 'diffusion welding' + 'mechanical processing' + 'shaping' with the main process as follows: foil plate blank preparation, surface cleaning, surface modification treatment, stop welding treatment, diffusion welding, mechanical processing and shaping. The single layer structured diaphragm and diaphragm capsule by diffusion welding manufactured by the invention has good fatigue property which can reach over 1 million times according to the difference between structures, materials and use environment, strong compression capacity, high precision of geometric dimension, convenient installation, good sealing property, precise and controllable welding line outline, adjustable welding line width, unconstrained size of the workpiece being welded and other advantages. The single layer diaphragm and diaphragm capsule 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 installation displacement and angle compensation element, elastic compensation element and air hole damp element, and can also be used as the measuring element and information acquisition element of a pressure gauge and an altimeter, thus providing single layer diaphragm and diaphragm capsule products with good performance for related industries.

Description

1. Technical field [0001] The invention can be used as an elastic compensating element of valve products, and can be used as a metering element and a signal collecting element of a pressure gauge and an altimeter. 2. Background technology [0002] At present, the single-layer structure diaphragm capsules used domestically and internationally are all connected by fusion welding or mechanical clamping. The connection method of fusion welding has strict requirements on the structural size of the parts to be welded, that is, it is required that the difference in cross-sectional size of the two parts to be welded should not be too large, and the welding deformation is large. The connection method of mechanical clamping is not easy to achieve high sealing between components, and the assembly is complicated and the assembly cycle is long. The single-layer diaphragm structure membrane box of the diffusion welding structure can not only realize the high sealing performance between t...

Claims

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Application Information

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IPC IPC(8): F16J3/04B23K20/14B23K20/18B23K20/24
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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