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A kind of composite flexible graphite sealing material and sealing gasket manufacturing method

A flexible graphite and sealing material technology, applied in the production of modified graphite sealing materials and gaskets, the production method and product of composite flexible graphite sealing materials, and the production of packing rings, can solve the problems of high temperature resistance, poor ultra-high pressure, etc., to avoid The effect of denaturation, simple and feasible method

Inactive Publication Date: 2011-12-21
株洲博尔密封材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a new flexible graphite sealing composite gasket manufacturing method and its products for the existing flexible graphite sealing materials that have high temperature resistance and poor ultra-high pressure performance. The flexible graphite sealing materials and gasket manufacturing methods, It can improve the high temperature and high pressure performance of flexible graphite sealing materials, and at the same time improve the manufacturing process of sealing gaskets

Method used

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  • A kind of composite flexible graphite sealing material and sealing gasket manufacturing method
  • A kind of composite flexible graphite sealing material and sealing gasket manufacturing method
  • A kind of composite flexible graphite sealing material and sealing gasket manufacturing method

Examples

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Embodiment 1

[0026] A method for manufacturing a flexible graphite sealing composite material, which adopts a multi-layer flexible graphite superposition and combination method to make the sealing material, and is characterized in that a layer of metal mesh with barbs on both sides is laid between every two layers of flexible graphite, The mesh is rapidly heated by electromagnetic heating, and when the metal mesh is heated to 850-950°C, the composite layer of flexible graphite and metal mesh is pressurized, and the pressure ratio can be 200KG / CM 2 up to 500 KG / CM 2 Choose between them, so that the barbs on the metal mesh hook the flexible graphite layer close to the surface of the metal mesh to form a whole sealing material, and then let the whole sealing material cool naturally to room temperature, that is, a multi-layer flexible graphite superimposed composite seal is made. Material.

[0027] A flexible graphite sealing composite material proposed according to the above method is as fol...

Embodiment 2

[0029] The preparation method of embodiment two is the same as embodiment one, just as attached figure 2 Shown, the flexible graphite layer that adopts is five layers, has increased one deck 6 on the basis of embodiment one, is spread the metal mesh 4 that has barb on both sides equally between every two layers of flexible graphite layers, and metal The barbs 5 on both sides of the net 4 are respectively hooked in the surface layers of the flexible graphite layer on both sides, so that the flexible graphite layer and the metal net become an integral body.

Embodiment 3

[0031] Embodiment 3 is a method for making a sealing gasket using the material made by the above method. The material used for the sealing gasket is made in the same way as in Example 2. The flexible graphite layer used is five layers, as shown in the attached image 3 As shown, a layer 6 is added on the basis of Embodiment 1, and a metal mesh 4 with barbs on both sides is laid between every two layers of flexible graphite, and the barbs 5 on both sides of the metal mesh 4 are respectively hooked. In the surface layers of the flexible graphite layer on both sides, the flexible graphite layer and the metal mesh are integrated. After the material is prepared, the sealing gasket is made; the making of the sealing gasket at least includes the following steps:

[0032] 1) Making sealing material: Make a sealing material with a suitable thickness according to the above method, then place it under the punching machine, and punch out a cake-shaped sealing pad as required;

[0033] 2)...

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Abstract

The invention relates to a method for manufacturing a composite flexible graphite sealing material and a sealing gasket. The sealing material is manufactured by superposing and combining a plurality of flexible graphite. The method is characterized in that a layer of a metal mesh, of which two faces are provided with barbs, is arranged between every two layers of the flexible graphite; the metal meshes are rapidly heated by using an electromagnetic heating manner; composite layers of the flexible graphite and the metal meshes are pressurized when the metal meshes are heated to 850-950 DEG C; the pressed pressure per unit of area can be selected between 200 kg / cm<2> and 500 kg / cm<2>, so that the barbs on the metal meshes can hook surface layers of the graphite layers which are close to the metal meshes to form a whole sealing material; and the whole sealing material is naturally cooled to normal temperature, i.e. the sealing material manufactured by superposing and combining a plurality of flexible graphite is made.

Description

technical field [0001] The present invention relates to a manufacturing method and product of a sealing material, in particular to a manufacturing method of a modified graphite sealing material and a sealing pad, especially to a manufacturing method and product of a composite flexible graphite sealing material; mainly suitable for making packing rings , Paste directly on metal and non-metal surfaces, effectively solve the gas phase seal. Background technique [0002] Now there are many sealing materials on the market, and they are widely used; flexible graphite is an ideal sealing material, commonly known as "king of sealing", with good mechanical, physical and chemical properties. Flexible graphite is formed by pressurizing expanded graphite. It not only retains the characteristics of graphite, but also overcomes the shortcomings of natural graphite, which is brittle and brittle, and has poor impact resistance. The expanded graphite is loose, porous and curly, similar to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/02B32B15/04B32B9/04B32B37/06B32B37/10
Inventor 周志恒
Owner 株洲博尔密封材料有限公司
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