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Annular flame tube high-temperature post-enameling deformation correcting method and fixture

A flame tube, high temperature technology, applied in the fields of welding, heat treatment, machining, and spraying, can solve problems such as deformation, reduce processing cycle, reduce labor intensity, and improve production efficiency.

Active Publication Date: 2018-02-16
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to provide a deformation correction method and fixture after the high-temperature enamel of the annular flame cylinder, to solve the deformation problem of the multi-layer sheet metal welding flame cylinder after high-temperature enamel, and at the same time reduce the labor intensity of workers and reduce the processing of parts cycle, improve the processing quality and production efficiency of parts

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  • Annular flame tube high-temperature post-enameling deformation correcting method and fixture
  • Annular flame tube high-temperature post-enameling deformation correcting method and fixture
  • Annular flame tube high-temperature post-enameling deformation correcting method and fixture

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Embodiment Construction

[0026] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.

[0027] A method for deforming and correcting the shape of an annular flame cylinder after high-temperature enamel paint includes the following technological process: sand blowing—roasting—correction—sand blowing—coating with W300 high temperature enamel paint—heat correction—turning. After coating with high-temperature enamel, put the parts into the heat-shaping fixture and put them into the furnace together for heat-shaping process. The furnace temperature rises with the furnace temperature, and the heating time is 30-40min. The final temperature is 800±10℃, and the duration is 2.5-3.5h. Cool down with the furnace to below 500°C and leave the furnace for air cooling. After the thermal adjustment of the part is completed, it directly meets the requirements of subsequent turning processi...

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Abstract

The invention discloses an annular flame tube high-temperature post-enameling deformation correcting method and a fixture. The high-temperature post-enameling deformation correcting method adopts hotcorrecting, the hot correcting fixture is cooperated, and a processing method comprises the steps of contacting welding sections, heat treating, grit blasting, roasting, correcting, grit blasting, coating a W300 high-temperature enamel, hot correcting and turning. The invention provides the method for treating deformation of a parts after being coated with a high-temperature enamel, and an ideal size is obtained by utilizing a hot correcting manner. With hot correcting, high-precision enamel molded surface correction is realized, the problem of enamel damage caused by mechanical correction issolved, meanwhile, the labor intensity of workers is reduced, the processing cycle of the parts is reduced, and the production efficiency of the parts is improved.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to the fields of welding, spraying, heat treatment and the like, in particular to a method and a fixture for controlling the deformation of high-temperature enamel parts of an annular flame tube. Background technique [0002] The flame tube is a high-temperature combustion part of the main combustion chamber of an aero-engine. It is a typical large-scale thin-walled multi-layer sheet metal superalloy welding assembly. The base material is GH4648. The flame tube components need to have better high temperature resistance, so it is required to spray high temperature enamel on the inner surface of the components to improve the high temperature resistance. [0003] The structure of the annular flame tube is relatively complicated, and it is mainly assembled and welded by inner and outer support sections, inner and outer support rings, inner and outer fairings, inner and outer mixing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/14B21D37/16
CPCB21D3/14B21D37/16
Inventor 丁清国夏峥嵘朱雁飞张旭黄顺李先号游晓君
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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