A kind of multi-material column CVI furnace and aircraft brake disc manufacturing method

Abstract

The invention provides a multi-material column CVI furnace and a manufacturing method for an aircraft brake disc. The multi-material column CVI furnace is used in the carbon-carbon composite material forming process of the aircraft brake disc manufacturing method. A stacking table (2) and a blocking body (5) are arranged in the furnace body of the CVI furnace. A plurality of stacking stations are arranged on the stacking table. The workpieces are stacked at each stacking station to form a material column. All the material columns on the table form the material column group. The baffle is located between the outer contour of the material column group and the inner wall of the furnace body, and surrounds the material column group along the circumference of the furnace body, and its height is not lower than the material column group. There is an air flow channel between the body and the outer contour of the material column group. The multi-material column CVI furnace provided by the present invention is less prone to blockage of the inlet of the exhaust gas pipeline, thereby helping to reduce maintenance costs.

Description

technical field [0001] The invention relates to the field of aircraft brake disc manufacturing, in particular to a multi-material column CVI furnace and a manufacturing method of an aircraft brake disc. Background technique [0002] Chemical vapor infiltration (CVI) is one of the common methods for manufacturing carbon-carbon composite materials for aircraft brake discs at home and abroad. In order to reduce production costs, the equipment used by aircraft brake disc manufacturers has gradually changed from single-material column CVI furnace to multi-material. The column type CVI furnace is transformed. The multi-material column type CVI furnace has a large loading capacity, and the required carbon source gas flow also increases. After the carbon source gas supply increases, the deposition tail gas increases, and the tail gas diffuses and deposits in the free space in the furnace. , it is easy to cause the blockage of the exhaust pipe inlet and increase the maintenance press...

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Problems solved by technology

[0002] Chemical vapor infiltration (CVI) is one of the commonly used methods for manufacturing carbon-carbon composite materials for aircraft brake discs at home and abroad. In order to reduce production costs, the equipment used by aircraft brake disc manufacturers has gradually changed from single-material column CVI furnaces to multi-material The transformation of the column type CVI furnace, the loading capacity of the multi-material column type CVI furnace is large, and the required carbon source gas flow rate also increases accordingly. After the carbon source gas supply becomes larger, the deposition tail gas increases, and the tail gas diffuses and deposits in the free space in the furnace , it is easy to cause the inlet of the exhaust pipe to be blocked and increase the pressure of equipment maintenance

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