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Multi-cavity pressureless sintered graphite mold

A graphite mold, multi-cavity technology, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of inability to achieve synthesis and sintering, waste of energy, and inability to obtain multiple sintered samples at one time.

Active Publication Date: 2019-12-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of existing sintering molds cannot realize the synthesis and sintering of large batches of samples at one time, the yield is low, wastes energy, and it is impossible to obtain a variety of sintered samples at one time. It is particularly important to achieve high-throughput pressureless sintering

Method used

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  • Multi-cavity pressureless sintered graphite mold
  • Multi-cavity pressureless sintered graphite mold
  • Multi-cavity pressureless sintered graphite mold

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. For the sake of clarity, various parts in the accompanying drawings are not drawn to scale.

[0027] The present invention provides a graphite mold for multi-cavity pressureless sintering. The whole mold is prepared from graphite, including a graphite sleeve 1, an upper graphite punch 21, a lower graphite punch 22 and a pre-pressing head 3. There are radial temperature measuring holes 4 on the outer wall of the graphite sleeve. The graphite sleeve is a multi-cavity hollow cylinder. The upper graphite punch and the lower graphite punch have the same structure, and the upper graphite punch and the lower graphite punch are opposite to each other. It is arranged at the upper and lower ends of the graphite sleeve respectively, so that the cylindrical protruding rod is located inside the cavity of the graphite sleeve and the material layer 8 is encapsul...

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Abstract

The invention discloses a multi-cavity pressureless sintering graphite die. The multi-cavity pressureless sintering graphite die comprises a graphite sleeve, an upper graphite punch, a lower graphite punch and a prepressure head; the graphite sleeve is a hollow cylinder with multiple cavities, and a temperature measuring hole in the radial direction is formed in the outer wall of the graphite sleeve; the upper graphite punch and the lower graphite punch are each a whole connected by a cylinder flange and conical protruding rods; and the prepressure head is a whole connected by a cylinder flange and cylindrical protruding rods. According to the multi-cavity pressureless sintering graphite die, a large batch of samples can be sintered at one time, the production efficiency is improved, energy is saved, and the requirement for high throughput material preparation is met; and complete differentiation of a large batch of samples can be obtained at one time, samples under different temperature are obtained at one time, and various characterization and physical performance tests are conducted conveniently.

Description

technical field [0001] The invention relates to the field of pressureless sintering equipment, in particular to a graphite mold for pressureless sintering by discharge plasma. Background technique [0002] Spark plasma sintering technology (Spark Plasma Sintering, SPS) is a new type of rapid sintering method that uses on-off DC pulse current to sinter directly. Small and uniform, it can maintain the natural state of raw materials, can obtain high-density materials, and can sinter gradient materials and complex workpieces. [0003] High-throughput synthesis is the most cutting-edge topic in materials science. Its core is to develop high-throughput and high-efficiency material synthesis methods, process technologies and equipment. Exploring high-throughput synthesis is a major challenge and opportunity in the field of materials science. [0004] At present, most of the sintering using spark plasma technology is pressure sintering. And the used mold of existing pressureless s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/03B28B7/24
CPCB22F3/03B28B7/24
Inventor 张建峰葛梦妮
Owner HOHAI UNIV
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