Brazing method for high-temperature alloy assembly of aero-engine

An aero-engine and superalloy technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of difficult positioning, difficult to guarantee the honeycomb brazing rate, large brazing deformation, etc., and achieve convenient and secure parts assembly and positioning. Brazing quality, good effect of parts brazing

Inactive Publication Date: 2016-04-13
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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AI Technical Summary

Problems solved by technology

[0002] The structure of the components of the high and low pressure turbine parts of the aero-engine adopts the combination of multiple segments to form the outer ring assembly of the turbine. Each segment is connected by brazing with a honeycomb core, an outer ring, and connecting pieces. Such parts are generally used In the form of simultaneous brazing, the honeycomb core and the outer ring, and the outer ring and the connecting piece are brazed together. There are problems such as large brazing deformation, difficult guarantee of honeycomb brazing rate, and difficult positioning.

Method used

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Embodiment Construction

[0020] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0021] Such as figure 1 , figure 2 A method for brazing a superalloy component of an aero-engine comprises the following steps:

[0022] ①Cleaning: Ultrasonic cleaning of honeycomb ring 1 and outer ring 2, and then drying;

[0023] ② Filling brazing material: place the brazing material in the core grid of the honeycomb ring 1;

[0024] ③Assembly positioning: Spot-weld the honeycomb ring 1 on the outer ring 2 with energy storage, and check the spot welding and gap conditions;

[0025] ④Primary brazing: put the honeycomb ring 1 and outer ring 2 assembly tooling in a vacuum furnace for brazing, the brazing temperature is 1175-1185°C, keep it warm for 5-10 minutes, then cool it with argon at 1000°C, and leave the furnace when it is less than 100°C ;

[0026] ⑤Inspection: check the appearance and internal brazing quality of the ho...

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Abstract

The invention provides a brazing method for a high-temperature alloy assembly of an aero-engine. The method comprises the first step of cleaning, the second step of brazing filler metal filling, the third step of first-time brazing, the fourth step of machining, the fifth step of second-time brazing and the sixth step of machining finishing. The two-time brazing technology is adopted, the requirement for brazing of high and low-pressure turbine outer ring fan-shaped section assemblies is guaranteed, and the brazing deformation is small; and meanwhile component machining is convenient, component brazing is good, component assembling and positioning are convenient, and the brazing quality of engine components is guaranteed.

Description

technical field [0001] The invention relates to a brazing method for high-temperature alloy components of an aero-engine, belonging to the technical field of brazing. Background technique [0002] The structure of the components of the high and low pressure turbine parts of the aero-engine adopts the combination of multiple segments to form the outer ring assembly of the turbine. Each segment is connected by brazing with a honeycomb core, an outer ring, and connecting pieces. Such parts are generally used At the same time, the form of brazing makes the honeycomb core and the outer ring, and the outer ring and the connecting piece brazed together, and there are problems such as large brazing deformation, difficult guarantee of honeycomb brazing rate, and difficult positioning. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a brazing method for superalloy components of aero-engines. The brazing meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/20B23K1/00
CPCB23K1/206B23K1/00
Inventor 敖斌王悦欣罗运芬史洽李昌万隆
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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