Technique for maintaining high-pressure turbine guide pipe

Abstract

The invention discloses a technique for maintaining a high-pressure turbine guide pipe. The technique comprises the steps of respectively repairing a tungsten carbide coating of the high-pressure turbine guide pipe, repairing the circumference size of the high-pressure turbine guide pipe body 1, repairing the circumference size of the high-pressure turbine guide pipe body 2 and repairing the end face of the high-pressure turbine guide pipe. By means of the technique, the out-of-tolerance failure of the tungsten carbide coating, in contact with a front journal, of the high-pressure turbine guide pipe due to shedding, the dimensional out-of-tolerance failure of the portion, cooperating with a high-pressure turbine, of the high-pressure turbine guide pipe due to abrasion, and the dimensionalout-of-tolerance failure of the end face, in contact with an adjusting pad, of the high-pressure turbine guide pipe due to abrasion are solved, the scrap rate of the high-pressure turbine guide pipe is effectively lowered to 0, and a large amount of cost is reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engines, and in particular provides a process method for maintaining a high-pressure turbine duct. Background technique [0002] The high-pressure turbine duct is an important part of the high-pressure turbine rotor. The state of the tungsten carbide coating where it contacts the front journal, and the position where it cooperates with the high-pressure turbine with The size and the axial dimension of the end face in contact with the adjusting pad are important parameters. During the maintenance process, the tungsten carbide coating in contact with the high-pressure turbine guide and the front journal falls out of tolerance, and the joint between the high-pressure turbine guide and the high-pressure turbine with The failure rate of excessive dimensional wear and axial dimensional wear at the contact point of the high-pressure turbine conduit and the adjustment pad is 100%. At present, the t...

AI Technical Summary

Problems solved by technology

At present, the tungsten carbide coating in contact with the high-pressure turbine guide and the front journal is out of tolerance, and the joint between the high-pressure turbine guide and the high-pressure turbine and Out-of-tolerance dimensional wear, out-of-tolerance wear on the end face of the contact between the high-pressure turbine guide and the adjustment pad, there is no stable process for fault maintenance, when the tungsten carbide coating in contact with the high-pressure turbine guide and the front journal falls off out-of-tolerance, the joint between the high-pressure turbine guide and the high-pressure turbine and When the size wear is out of tolerance, and the axial dimension wear of the end face at the contact point between the high pressure turbine guide tube and the adjustment pad is out of tolerance, it is necessary to replace the qualified high pressure turbine guide tube

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