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Vacuum hotpressing machine

A technology of vacuum hot pressing and vacuum pumping system, applied in the field of powder metallurgy, can solve the problems of unsuitability, long time, long time, etc., and achieve the effect of reducing waiting time and improving continuous working ability

Active Publication Date: 2009-07-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Abstract
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Problems solved by technology

[0004] The disadvantage of this vacuum hot press is that it takes a long time to reach a high vacuum from normal pressure, and it takes longer in the case of a large furnace chamber volume.
Although this method speeds up the operating efficiency, it is not suitable for micron or even nanopowders with high specific surface area and faster oxidation rate, which only rely on inert gas to exclude air

Method used

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as Figure 1~4 Shown is a preferred embodiment of the present invention.

[0020] A vacuum hot press, comprising a main working chamber 1 with an observation window 11, the main working chamber 1 is provided with a vacuum system, a heating source, and a hydraulic forming system, and the inflation adjustment pressure in the hot press system adopts The gas source is pure (99.9%) or high-purity nitrogen (99.99%), argon, helium or a mixture of at least two of these three. The observation window 11 is arranged on the front panel of the main working room 1, and the various devices in the main working room 1 and their connection methods are all prior art, and will not be described in detail here.

[0021] It also includes a highly airtight transition chamber 2 and a glove box 3 that are smaller in volume than the main working chamber. I...

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Abstract

The invention relates to a vacuum hot press, which comprises a main work room provided with an observing window, wherein the main work room is provided with a vacuumizing system, a heating source and a hydraulic forming system inside; a transition cabin and a glove box device are arranged on the vacuum hot press and communicated with the main work room respectively; because the transition cabin is arranged as a transfer to place blanks and take out a product after hot pressing and the glove box device with high gas tightness is used for taking and placing the blanks and pressing, a furnace door of the main work room does not need to be opened every time, and the main work room does not need to be vaccumized every time when the hot press performs pressing every time, so as to reduce waiting time, greatly improve the continue working capacity of the whole hot press equipment system and be applicable to batch industrial production.

Description

technical field [0001] The invention belongs to a thermal processing machine in the technical field of powder metallurgy, in particular to a vacuum hot press. Background technique [0002] There are many known techniques for forming inorganic non-metallic ceramics or metal products, and these methods especially include compression molding, injection molding, extrusion molding and stamping molding methods. Usually, the hot press molding process has a good effect on the manufacture of high-density and high-orientation products. In addition, for some metal or inorganic non-metallic powders, hot pressing under vacuum can avoid oxidation, thereby improving the performance of the product. [0003] The overall design of the existing vacuum hot press is mainly composed of a heating source, a vacuum system and a hydraulic system, and the three parts are connected by flanges and sealing rings. The vacuum system is usually composed of a furnace chamber, a mechanical pump, a Roots pum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/00B25J21/02
Inventor 李东林旻闫阿儒王会杰潘伟李卫
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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