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Manufacture method of metal compound flexible graphite gasket

A technology of flexible graphite and manufacturing methods, applied in the direction of metal layered products, chemical instruments and methods, lamination devices, etc., can solve problems such as leakage, large pre-tightening force, and easy damage to the sealing surface, and achieve simple process and high resilience High, good sealing effect

Inactive Publication Date: 2013-10-23
抚顺吉顺机械设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gaskets made of non-metallic materials are prone to aging, deformation, and decreased resilience after a period of use, and are suitable for environments with low pressure, and cannot achieve effective sealing effects
Due to the high hardness of the metal material, a large pre-tightening force is required, the surface finish of the flange is high, and the installation and use conditions are harsh. When the gasket is tightened, the sealing surface is easily damaged, and the metal seal cannot adapt to the surrounding volume when heating and cooling. Changes in the gap, but also prone to leakage
The existing composite gasket manufacturing process is more complicated and the price is higher, especially the yield of large-size gaskets is low

Method used

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  • Manufacture method of metal compound flexible graphite gasket
  • Manufacture method of metal compound flexible graphite gasket
  • Manufacture method of metal compound flexible graphite gasket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The manufacturing method of the metal composite flexible graphite gasket is according to the following steps:

[0036] a. Preheat the metal material at a temperature ≤ 200°C, put it into a heating furnace and raise the temperature to 1050-1150°C, and keep the temperature constant for 3 hours;

[0037] b Then take the metal material out of the heating furnace and quickly put it into cooling water to cool down; after the above heat treatment process, the hardness of the metal material is reduced, and the tested performance parameters are shown in Table 1; figure 2 is the aging heat treatment curve of its metal material;

[0038] c Shaping and stamping of metal materials into metal gaskets 1;

[0039] d Ultrasonic treatment of metal gasket 1;

[0040] e Screening of flexible graphite 2, acidification and expansion at a temperature of 900-1100°C;

[0041] f Apply adhesive on the outer surface of the metal gasket 1 or the inner surface of the flexible graphite 2 or both ...

Embodiment 2

[0047] The manufacturing method of the metal composite flexible graphite gasket is according to the following steps:

[0048] a. Preheat the metal material at a temperature ≤ 200°C, put it into a heating furnace and raise the temperature to 1050-1150°C, and keep the temperature constant for 3 hours;

[0049] b Then take out the metal material from the heating furnace and quickly put it into the cooling water to cool down; after the above heat treatment process, the hardness of the metal material is reduced, and the tested performance parameters are shown in Table 2; figure 2 is the aging heat treatment curve of its metal material;

[0050] c Shaping and stamping of metal materials into metal gaskets 1;

[0051] d Ultrasonic treatment of metal gasket 1;

[0052] e Screening of flexible graphite 2, acidification and expansion at a temperature of 900-1100°C;

[0053] f Apply adhesive on the outer surface of the metal gasket 1 or the inner surface of the flexible graphite 2 or...

Embodiment 3

[0058] The manufacturing method of the metal composite flexible graphite gasket is according to the following steps:

[0059] a. Preheat the metal material at a temperature ≤ 200°C, put it into a heating furnace and raise the temperature to 1050-1150°C, and keep the temperature constant for 3 hours;

[0060] b Then take the metal material out of the heating furnace and put it into the cooling water to cool quickly; after the above heat treatment process, the hardness of the metal material is reduced, and the performance parameters are shown in Table 3 after testing. figure 2 is the aging heat treatment curve of its metal material;

[0061] c Shaping and stamping of metal materials into metal gaskets 1;

[0062] d Ultrasonic treatment of metal gasket 1;

[0063] e Screening of flexible graphite 2, acidification and expansion at a temperature of 900-1100°C;

[0064] f Apply adhesive on the outer surface of metal gasket 1 or the inner surface of flexible graphite 2 or both at...

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Abstract

The invention discloses a manufacture method of a metal compound flexible graphite gasket. The manufacture method comprises the following steps of: a, preheating a metal material to be not more than 200 DEG C, loading the pre-heated metal material in a heating furnace to raise the temperature to 1050-1150 DEG C, and carrying out constant temperature for 3h; b, taking the metal material out from the heating furnace, rapidly placing in cooling water for cooling; c, shaping and punching the metal material into a metal gasket; d, ultrasonically treating the metal gasket; e, screening flexible graphite, acidifying, and expanding at a temperature of 900-1100 DEG C; f, applying a binding agent to the outer surface of the metal gasket or the inner surface of the flexible graphite or the outer surface of the metal gasket and the inner surface of the flexible graphite, compounding and pressing the metal gasket and the flexible graphite at a pressure of 50-100kg / cm<2>. The manufacture method is simple in process; the metal compound flexible graphite gasket is good in sealing property, high in resilience force and low in cost, and resists high temperature, high pressure and corrosion.

Description

technical field [0001] The invention relates to a method for manufacturing a sealing gasket, in particular to a method for manufacturing a metal composite flexible graphite gasket. Background technique [0002] Sealing gaskets are often used in industrial air conditioning, petroleum, chemical and other industrial fields. The gaskets used in these fields are often used under high temperature, high pressure, and highly corrosive harsh conditions. The existing gaskets generally have a main body The materials are metal, non-metal and composite materials. Gaskets made of non-metallic materials are prone to aging, deformation, and decreased resilience after a period of use, and are suitable for environments with low pressure, and cannot achieve effective sealing effects. Due to the high hardness of the metal material, a large pre-tightening force is required, the surface finish of the flange is high, and the installation and use conditions are harsh. When the gasket is tightened,...

Claims

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Application Information

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IPC IPC(8): B32B15/04B32B37/10B32B37/12B32B38/18
Inventor 于俊良
Owner 抚顺吉顺机械设备制造有限公司
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