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Powder metallurgy mold having quick drainage structure

A technology of powder metallurgy and drainage structure, applied in the field of powder metallurgy, can solve the problems of increasing the pressure and time required for drainage, reducing the efficiency, and wasting the power of the molding equipment, so as to shorten the drainage time and improve the molding efficiency.

Inactive Publication Date: 2016-02-10
FOSHAN CONSTANT HYDRAULIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to this top-down pressure, the density of the part increases the fastest during molding, which is opposite to the direction of water discharge, which hinders the discharge of water from the middle and bottom of the part, increasing the pressure and time required for drainage. , resulting in a waste of molding equipment power and a reduction in efficiency

Method used

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  • Powder metallurgy mold having quick drainage structure
  • Powder metallurgy mold having quick drainage structure
  • Powder metallurgy mold having quick drainage structure

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0026] Such as Figure 2-3 As shown, a powder metallurgy mold with a fast drainage structure includes a lower mold 200, an upper mold 100 and a molding cavity 300; the molding cavity 300 is a closed cavity, which is covered by the upper mold 100 and the lower mold 200 The upper mold 100 is fixedly installed; the lower mold 200 is located directly below the upper mold 100, and is pressed against the upper mold 100 from bottom to top. The raw material used in the powder metallurgy mold is wet powder, that is, slurry. When the wet powder is injected into the molding cavity 300, under the action of gravity, the moisture content of the upper layer of the wet powder is low and the density of the lower layer is high. When the molding cavity 300 is compressed, the drainage direction is as follows: image ...

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Abstract

The invention relates to the field of powder metallurgy, in particular to a powder metallurgy mold having a quick drainage structure. The powder metallurgy mold comprises a lower mold, an upper mold and a molding cavity, wherein the molding cavity is a closed cavity, and is formed by covering the upper mold and the lower mold; the upper mold is fixedly installed; and the lower mold is positioned rightly below the upper mold, and is pressed to the upper mold from bottom to top. A raw material used by the powder metallurgy mold is wet powder-slurry; when the molding cavity is compressed, a drainage direction is from bottom to top; and the powder metallurgy mold adopts a pressing direction and a pressing structure of moving the lower mold to the upper mold, so that the density change direction of the wet powder from strong to weak in part pressing is consistent with the drainage direction of water, the water is convenient for drainage, the drainage time in part molding is shortened, and the molding efficiency of the powder metallurgy mold is improved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder metallurgy mold with a fast drainage structure. Background technique [0002] In the field of powder metallurgy, it is necessary to press the powder material with moisture to form parts through molding dies. At present, wet powder molding machines are often used in China to complete the molding process of parts; figure 1 The mold of the existing molding machine shown includes an upper half mold 11, an off-duty mold 12 and a molding cavity 10. A drainage pipe 20 and a water storage cavity 30 are communicated above the molding cavity, and a water suction port 40 is provided on the top of the water storage cavity. During the compression molding process after the injection of the wet powder, that is, the slurry, it is necessary to discharge the moisture from the molding cavity 10 . Because the wet powder is a slurry-like raw material, an airtight molding cavity is required...

Claims

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Application Information

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IPC IPC(8): B22F3/03
Inventor 权晋花陈国华周裕强黄志伟黎永杰
Owner FOSHAN CONSTANT HYDRAULIC MACHINERY
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