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Vacuum plasma powder metallurgy sintering technology

A technology of vacuum plasma and powder metallurgy, which is applied in the field of powder metallurgy sintering, can solve the problems of low thermal efficiency, long heating time, and restricting the development of powder metallurgy sintering, and achieve the goal of improving thermal efficiency, simple and easy overall design, uniform diffusion and overall stable heating Effect

Inactive Publication Date: 2015-06-10
宝鸡正微金属科技有限公司
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  • Summary
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  • Application Information

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Problems solved by technology

[0002] In the powder metallurgy sintering process, the sintering temperature of many materials needs to reach more than 2000 degrees, such as tungsten alloy sintering, etc. The existing equipment and processes for powder sintering have fatal defects of long heating time and low thermal efficiency, which restrict powder metallurgy. sintering development, so it is necessary to improve

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  • Vacuum plasma powder metallurgy sintering technology

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Embodiment Construction

[0013] Attached below figure 1 An embodiment of the present invention is described.

[0014] Vacuum plasma powder metallurgy sintering process, the powder green body 5 is placed in the cavity 4 of the graphite frame heat conductor 3 placed in the vacuum furnace, and the metal placed on the graphite frame heat conductor 3 is heated to melt by using a high-temperature plasma gun 1 The molten metal 2 uses the molten metal 2 and the graphite frame heat conductor 3 to uniformly spread the flame temperature of the high-temperature plasma gun 1 into the cavity 4 to heat and sinter the powder compact 5 smoothly.

[0015] Working principle: The plasma flame generated by the high-temperature plasma gun 1 directly acts on the molten metal 2, so that the molten metal 2 is between the melting point and the gasification temperature, which can theoretically reach more than 3000 degrees. The heat is transmitted to the graphite frame heat conductor 3 through the molten metal 2, and the heated...

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Abstract

The invention provides a vacuum plasma powder metallurgy sintering technology. A powder biscuit is placed into a cavity in a graphite frame heat conductor arranged inside a vacuum furnace. A high-temperature plasma gun is used for heating metal arranged on the graphite frame heat conductor into molten metal liquid. The molten metal liquid and the graphite frame heat conductor are utilized for evenly diffusing the flame temperature of the high-temperature plasma gun into the cavity to steadily heat and sinter the powder biscuit.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy sintering, and in particular relates to a vacuum plasma powder metallurgy sintering process. Background technique [0002] In the powder metallurgy sintering process, the sintering temperature of many materials needs to reach above 2000 degrees, such as tungsten alloy sintering, etc. The existing equipment and processes for powder sintering have fatal defects of long heating time and low thermal efficiency, which restrict powder metallurgy. The development of sintering is therefore necessary to improve. Contents of the invention [0003] Technical problem solved by the present invention: provide a vacuum plasma powder metallurgy sintering process, put the powder biscuit into the cavity of the graphite frame heat conductor, use a high-temperature plasma gun to heat the metal into molten metal, and use the molten metal and graphite frame The heat conductor spreads the flame temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105
Inventor 戚民杰
Owner 宝鸡正微金属科技有限公司