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Aero-engine rib plate type part repairing method

A technology for repairing aero-engines and parts, applied to aircraft parts, welding accessories, welding protection devices, etc., can solve problems such as cracks in parts of aero-engine ribs, achieve huge economic and social benefits, effective repair methods, and welding parameters stable effect

Inactive Publication Date: 2020-04-10
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a method for repairing parts of aero-engine ribs. Crack repair of plate parts

Method used

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  • Aero-engine rib plate type part repairing method
  • Aero-engine rib plate type part repairing method
  • Aero-engine rib plate type part repairing method

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0040] In order to solve the problems existing in the existing technology, such as figure 1 As shown, the embodiment of the present invention provides a method for repairing ribbed parts 3 of aero-engines. Crack 1 fix issue.

[0041] Such as figure 1 As shown, a method for repairing aero-engine ribbed parts 3 comprises the following steps:

[0042] S1, such as figure 2 As shown, part inspection, fluorescent inspection is carried out on the ribbed part 3 with crack 1, and the position and length of crack 1 are determined;

[0043] Fluorescent inspection is carried out on ribbed parts 3 such as the shrinkage and expansion section adjustment piece to ...

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Abstract

The invention discloses an aero-engine rib plate type part repairing method, and belongs to the technical field of aero-engine part performance recovery. The aero-engine rib plate type part repairingmethod comprises the following steps: S1, part inspection is conducted, specifically, fluorescence inspection is conducted on rib plate type parts with cracks, and the positions and the lengths of thecracks are determined; S2, cracks are removed and polished, a through groove with the width ranging from 1 mm to 1.5 mm is polished in the length direction of the cracks, grooves are formed in the two sides of the through groove in the length direction, and oxides on the surfaces of the grooves and the peripheral surfaces of the grooves are removed; S3, welding repair is conducted, and direct-current fast-frequency pulse welding is adopted; S4, heat treatment for eliminating welding stress is conducted; and S5, post-welding inspection is conducted, specifically, fluorescence inspection and X-ray inspection are conducted on each weld joint. The aero-engine rib plate type part repairing method is effective, reliable, high in operability, stable in welding parameter and simple in process, and the problem of crack repairing of aero-engine rib plate type parts can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of performance restoration of aero-engine parts, in particular to a method for repairing parts of aero-engine ribs. Background technique [0002] Crack failures occur on the rib plate parts on the retractable nozzle of the aero-engine, and they are scrapped because there is no suitable repair method. The scrap rate is 50%. If the repair can only be repaired by replacing it with new parts, the repair cost is high. The ribbed parts are precision-cast from K424 material, and the working temperature is 400-800°C. During the operation of the engine, they are subjected to thermal load, aerodynamic force, mechanical vibration and other effects. Such parts are prone to cracks and ablation failures under the action of thermal load and vibration load. Among them, crack failures are the most common, and the failure locations are mainly concentrated at the corners of the vertical ribs of the parts. Crack failure. Crac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/04B23K9/167B23K9/32
CPCB23K9/167B23K9/321B23K9/325B23P6/04B23P2700/01
Inventor 蓝天霞赵维阳吕晶王邦赛李丹
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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