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Multi-stock-column type industrial furnace for chemical vapour infiltration densification

A chemical vapor infiltration and industrial furnace technology, applied in the field of multi-material column industrial furnaces for chemical vapor infiltration densification, can solve the problems of increased input-output ratio, limited production capacity, high energy consumption, etc., and achieve uniform flow field distribution, Uniform gas flow and efficient vapor deposition

Active Publication Date: 2011-10-12
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Chinese invention patent 00 114790.0 uses a single material column with multiple workpieces, which has limited production capacity, high energy consumption, and the input-output ratio needs to be improved.

Method used

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  • Multi-stock-column type industrial furnace for chemical vapour infiltration densification
  • Multi-stock-column type industrial furnace for chemical vapour infiltration densification
  • Multi-stock-column type industrial furnace for chemical vapour infiltration densification

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Effect test

Embodiment 1

[0126] See attached figure 1 , 2 , 4, 6, a kind of multi-material column industrial furnace for chemical vapor infiltration densification of the present invention comprises a furnace cover, a furnace body and a furnace seat, and the furnace body and the furnace cover adopt a stainless steel water-cooled shell, and the whole furnace shell includes a furnace cover (2), body of furnace (3), furnace seat (7), described furnace lid and body of furnace can be separated also can be connected as a whole, be fixed on body of furnace in described furnace lid (2), body of furnace (3) (3) A heat preservation cover (6) is placed on it, thus forming a bell jar structure and being mounted on the furnace base (7) as a whole (can be lifted at any time); in the furnace base (7), place There is a large support platform (8) of rigid stainless steel quality, and the large support platform (8) is installed on the positioning ring groove of the inner wall of the furnace seat (7); There are three m...

Embodiment 2

[0128] Embodiment 2 of the present invention is to increase the three vertical heating elements (14) in embodiment 1 to six vertical heating elements (14), and the six vertical heating elements (14) are evenly distributed on the same circumference ; Six independent material column chambers are provided in the heat preservation cover 6, and the six vertical rod heating elements (14) are placed in the material column chamber, and the six vertical rod heating elements (14) are in the On the axis of the material column chamber; in the middle space surrounded by the six independent material column chambers in the heat preservation cover 6, there is also a material column chamber of the same structure, that is, the seventh material column chamber, No vertical rod heating element is set in the seventh material column chamber; the power supply of the six vertical rod heating elements (14) is to first connect two adjacent vertical rod heating elements 14 in parallel and then adopt a thr...

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Abstract

The invention discloses a multi-stock-column type industrial furnace for chemical vapour infiltration densification. The multi-stock-column type industrial furnace comprises a furnace cover, a furnace body and a furnace base. The furnace cover and the furnace body are connected integrally. Heat insulation covers are arranged in the furnace cover and the furnace body to form a bell type structure, so that the bell type structure is integrally arranged on the furnace base. Three or six upright rod type heating bodies, which are uniformly distributed co-circumferentially, are arranged on the furnace base. Stock column chambers matched with the heating bodies in number are arranged in the heat insulation covers. Air distribution rings are arranged on the stock column chambers. The multi-stock-column type industrial furnace disclosed by the invention is rational in structure, low in energy consumption and high in yield. An internally heating type three-phase balance combination structure with a plurality of heating bodies is used. The furnace is structured compactly and can save energy. The thermal gradient can be controlled effectively. The couplings of related physical fields are realized. The quality and the efficiency of CVD (Chemical Vapour Deposition) are improved. Air is supplied through multi-layer pre-heating ring type rotational flow so that the atmosphere evenness of a reaction chamber is improved. The capacity and the thermal efficiency of the furnace are greatly improved by charging through multiple stock columns of the independent reaction chamber. The multi-stock-column type industrial furnace is applicable to densification of C / C (Carbon / Ceramic) composite material brake discs and a plurality of carbon / ceramic composite annular work-pieces.

Description

technical field [0001] The invention discloses an industrial furnace for densification by chemical vapor infiltration, in particular to a multi-material column industrial furnace for densification by chemical vapor infiltration. Background technique [0002] Chemical vapor infiltration (CVI) densification is the core technology for preparing high-performance C / C composite brake discs. The working life of the aviation carbon brake disc made by this technology can reach 2000-4000 times, which is 5-10 times longer than that of the old generation of metal-based brake discs; moreover, the carbon disc is much lighter, and its density is only that of the metal disc. 1 / 4 of the density, for example, each Boeing 757 passenger plane or A320 passenger plane can lose 500-600Kg after switching to carbon brake discs. Therefore, the application of carbon brake discs has greatly improved the performance of modern aircraft, and has been used in modern aircraft has been more and more widely ...

Claims

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Application Information

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IPC IPC(8): C23C16/44C23C16/46C23C16/455
Inventor 邹志强熊杰张红波熊翔黄伯云
Owner CENT SOUTH UNIV
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