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Preparation apparatus of graphite metal wrap for thermal isostatic pressing

A metal cladding and hot isostatic pressing technology is applied in the field of preparation devices of graphite metal cladding for static pressing, which can solve the problem of high manufacturing cost, and achieve the effects of reducing the impregnation allowance, reducing the manufacturing cost and uniform thickness

Inactive Publication Date: 2009-06-10
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

However, since silver is a precious metal, hot isostatic pressing treatment is required in the preparation process, which makes its manufacturing cost very high. Therefore, it is particularly important to improve production efficiency, increase yield, and reduce silver consumption.

Method used

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  • Preparation apparatus of graphite metal wrap for thermal isostatic pressing

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Embodiment Construction

[0014] The present invention uniformly coats metal on the graphite surface by casting method before hot isostatic pressing to form a graphite metal sheath, and the coating metal can be silver, copper, aluminum or babbitt alloy and the like.

[0015] Taking the coating of metallic silver on the outer surface of the graphite column as an example, the graphite column is suspended in the graphite crucible by means of axial fixing and radial fixing. Such as figure 1 As shown, the graphite to be impregnated with silver is processed into cylinders. One graphite column I1 and graphite column III3 have cylindrical bosses on one side and cylindrical concave holes of the same size on the other side; the other graphite column II2 has cylindrical holes on both sides. concave hole. Butt the processed cylindrical graphite columns, graphite column I1 is located in the middle, graphite column II2 and graphite column III3 are respectively located at the upper and lower ends of graphite column ...

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Abstract

The invention relates to technology for preparing a high-performance graphite sealing material, in particular to a device for preparing a graphite metal clad for hot isostatic pressing. The device is provided with a graphite column, metal bars, a graphite gasket, a graphite crucible cover, a graphite crucible and a pouring gate, wherein the graphite column is arranged in the graphite crucible; gaps for filling metal are reserved on the periphery of the graphite column; the metal bar is inserted between the upper surface of the graphite column and the graphite gasket arranged on the bottom of the graphite crucible; a metal bar is inserted between the upper surface of the graphite column and the graphite crucible cover arranged on the top of the graphite crucible; the upper surface of the graphite column is provided with the graphite gasket; the metal bars pass through the graphite gasket; and the graphite crucible cover is provided with the pouring gate. In the device, the graphite column is hung in the graphite crucible through axial fixation and radial fixation methods, so as to reduce immersion allowance of metal silver and manufacture cost; and because the thickness of the silver clad on the outer surface of the graphite column is reduced, the cracking after pouring is reduced and the rate of finished products is improved.

Description

Technical field: [0001] The invention relates to a preparation technology of a high-performance graphite sealing material, in particular to a preparation device for a graphite metal sheath for hot isostatic pressing. Background technique: [0002] Silver-impregnated graphite material has the advantages of high density, high strength, wear resistance, especially good thermal conductivity, electrical conductivity and sealing performance, and has been applied in many fields such as national defense, electronics, and machinery. But because silver is a precious metal, hot isostatic pressing treatment is required in the preparation process, making its manufacturing cost very high. Therefore, it is particularly important to improve production efficiency, improve yield and reduce silver consumption. [0003] The manufacture of silver-impregnated graphite requires hot isostatic pressing to allow molten metallic silver to penetrate evenly into the pores of the graphite material. Befo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/51
Inventor 白朔徐红军成会明杜海峰巴力学周序科罗川吴俊峰赵金福周金玉
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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