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Isostatic compaction mould, compaction method utilizing mould and accessories of mould for powder sintering materials

A technology of isostatic pressing and sintering materials, applied in the field of static pressing, can solve the problem of uneven product composition

Active Publication Date: 2014-01-15
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the quality and particle size of different element powders are often different, it usually leads to a relative drop between them when they enter the cavity and fall freely by gravity. In this case, the product composition will be uneven.

Method used

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  • Isostatic compaction mould, compaction method utilizing mould and accessories of mould for powder sintering materials
  • Isostatic compaction mould, compaction method utilizing mould and accessories of mould for powder sintering materials
  • Isostatic compaction mould, compaction method utilizing mould and accessories of mould for powder sintering materials

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Embodiment

[0018] Such as figure 1 , 2 Shown in and 3, the isostatic pressing molding die of the powder sintered tubular filter element, its mandrel 2 is a steel solid cylindrical rod, and the mandrel 2 is set in a tubular outer mold 1 made of rubber, and the outer membrane 1 A lower locator 7 is installed on the bottom of the mandrel 2, and the lower locator 7 is integrally set in the lower port of the outer membrane 1 and matched with the lower port. The lower end is matched, and the upper end surface of the lower locator 7 is also provided with a positioning stop; an upper locator 6 is installed above the outer membrane 1 and the mandrel 2, and the upper locator 6 is supported between the outer membrane 1 and the mandrel 2 , and there is a leakage hole on the upper positioner 6; the upper end of the outer film 1 is slightly higher than the upper end of the upper positioner 6 and the mandrel 2, thereby forming a groove for receiving the powder raw material 14. Outer film 1 and mandr...

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Abstract

The invention discloses an isostatic compaction mould, compaction method utilizing the mould and accessories of the mould for powder sintering materials, and the filling speed of powdery materials in a mould cavity can be controlled. The isostatic compaction mould comprises an outer mould and a mould core, a long and narrow cavity is formed between the outer mould and the mould core, a material injection port is formed in the upper end of the cavity, and the powdery materials for compaction enter the cavity through the material injection port and fall through the gravity to fill the cavity. A material supporting device is arranged in the cavity, when the powdery materials are filled into the cavity, the material supporting device is driven by a position control mechanism which does not affect filling operation to move in the cavity from top to bottom. In the process of filling, the powdery materials do not fall off freely any longer; however the powdery materials are supported by the material supporting device and fall slowly along with the material supporting device. In the process of falling, the evenly-mixed powdery materials are pushed and squeezed to move downwards together in a pushed mode, segregation does not happen, and components of the powdery materials in each portion of the cavity are even after the cavity is filled with the powdery materials.

Description

technical field [0001] The application relates to the technical field of isostatic pressing of powder sintered materials, in particular to a mold for isostatic pressing of powder sintered materials, a molding method and accessories thereof. Background technique [0002] The Chinese patent document with the publication number CN103009662A (hereinafter referred to as the reference) applied by the applicant of the present application discloses an isostatic pressing mold for producing powder sintered tubular filter elements. According to the records in paragraphs [0039] to [0045] of the description of the patent document and the appended image 3 As shown, the mold includes an outer mold and a core mold, and a long and narrow cavity is formed between the outer mold and the core mold. There is an injection port at the upper end of the cavity, and the powder raw material for molding enters the cavity through the injection port and closes Gravity falls to fill the cavity. After fi...

Claims

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Application Information

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IPC IPC(8): B22F3/03B22F5/12B22F3/04
Inventor 高麟汪涛罗军
Owner CHENGDU INTERMENT TECH
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