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Mounting edge repairing method

A technology of parts installation and turning processing, which is applied in the field of installation and repair, and can solve problems affecting production and delivery tasks

Active Publication Date: 2021-12-03
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the lack of effective repair process in the early stage of such problems, the problematic parts have been stored on site as items to be processed, which seriously affected the production and delivery tasks

Method used

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Embodiment

[0031] KF306 coating is an emerging wear-resistant material, which is widely used in wear-resistant coatings of aviation parts. In order to save a large number of titanium alloy TC4 material fan casing parts, on the basis of comprehensive analysis, heat resistance, wear resistance, hardness and other properties of titanium alloy materials, the repair process of spraying KF306 coating on the fan casing is adopted. Due to the high hardness and high brittleness of the KF306 coating, it is easy to break and fall off during the turning process. Therefore, after spraying the KF306 coating on the inner seam of the installation side, the initial repair stage can only be processed by grinding. Grinding machine equipment is limited, and the grinding cycle is long. It takes two days to grind and install a part. On the one hand, it takes up a lot of grinding machine equipment, and on the other hand, it seriously affects production efficiency and delivery nodes. The most ideal processing m...

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Abstract

The invention provides a mounting edge repairing method, which comprises the following steps: step 1, turning a mounting edge; step 2, spraying a KF306 coating on the inner spigot of the lathed mounting edge; step 3, turning the sprayed mounting edge; and step 4, trimming an over-spraying face, and completing repairing of the mounting edge. By means of the method, the inner spigot of the mounting edge of a fan casing is subjected to supplementary machining, on one hand, the size requirement can be met, on the other hand, the strength and service life requirements of the fan casing are met, high-value fan casing parts are saved, cost is greatly saved, and waste of resources is avoided. Due to the fact that the mode that the sprayed mounting edge is turned with higher efficiency is adopted by summarizing past experiences and conducting on-site repeated tests, the repair time is well controlled, and the requirement for the production cycle of overhaul of the fan casing can be met.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, in particular to a method for repairing while installing. Background technique [0002] A certain type of aero-engine overhaul fan case installation side inner seam due to long service time, the parts have a certain deformation. The size of some installation side seams is out of tolerance, and there is a problem of lack of meat. In the early stage of such problems, because there was no effective repair process, the problematic parts have been stored on site as waiting items, which seriously affected the production and delivery tasks. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention provides a method for repairing the installation side, which can efficiently repair the inner seam of the fan casing with missing meat to meet the requirements of the design drawing. [0004] To achieve the above object, the present invention pr...

Claims

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Application Information

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IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 李康赵晓妍任润娥余影锋雷海峰杨森常瑛吴昕
Owner AECC AVIATION POWER CO LTD
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