Anti-loose high-temperature alloy lock washer and manufacturing method thereof

Abstract

The invention belongs to the technical field of aero-engine manufacturing and repairing, and discloses an anti-loose high-temperature alloy lock washer which comprises a ring part. Two locking claws are arranged on each of the left side and the right side of the ring part, a lock claw is arranged at the bottom of the ring part, the length of the lock claw is 4-8 mm, and the lock washer is made ofGH3044. According to the anti-loose high-temperature alloy lock washer, the failure rate of falling of heat shield nuts in the using process of an aero-engine of a certain type is effectively lowered,the stability of the engine and assembling efficiency of operators are improved, the flight quality is guaranteed, and regular checking, fault repairing and repeated test-run costs are saved.

Description

technical field [0001] The invention belongs to the technical field of aero-engine manufacture and maintenance, and in particular relates to an anti-loose superalloy stop washer and a manufacturing method thereof. Background technique [0002] During the use of a certain type of aero-engine, the heat shield nut has been falling off for a long time. A general survey of the heat shield nut in use of a certain type of aero-engine fell off, and it was found that 1-2 nuts fell off in each of the 8 engines. Fault. [0003] Nut failures still occur frequently, and the development of the failure is more serious, and the number of nuts falling off is increasing day by day. Of the 12 nuts used to fix the heat shield, 7 of the 12 nuts have fallen off on a certain engine, which affects the reliability of the engine. [0004] The original assembly of the old structure with double claws and a stop washer made of 1Cr18Ni9Ti, under the high temperature and high pressure conditions of 500-6...

AI Technical Summary

Problems solved by technology

[0006] 1. Insufficient hardness, unable to meet the locking requirements under high temperature conditions;

[0007] 2. The number of locking claws is insufficient to meet the requirements for preventing nut rotation;

[0008] 3. The length of the stop claw is not enough to meet the anti-rotation requirements of the stop washer;

[0010] 1. The punching die cannot effectively punch out a stop washer with a hardness of 300HR15N;

[0011] 2. There is a lack of optimized bending process. For high-temperature alloy stop washers with high hardness, it is necessary to properly solve the problem of stop claw bending;

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