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A method for cleaning deposits in blade inner cavity by liquid-free energy-gathering ultrasonic waves

An ultrasonic and sediment technology, applied in the field of workpiece maintenance and cleaning, can solve problems such as the difficulty of removing inner cavity deposits, and achieve huge economic and social values ​​and good technical effects

Inactive Publication Date: 2016-10-05
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the technical bottleneck problem that the complex internal cavity deposits of the high-pressure turbine blades are difficult to remove in the deep repair of the engine

Method used

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  • A method for cleaning deposits in blade inner cavity by liquid-free energy-gathering ultrasonic waves
  • A method for cleaning deposits in blade inner cavity by liquid-free energy-gathering ultrasonic waves
  • A method for cleaning deposits in blade inner cavity by liquid-free energy-gathering ultrasonic waves

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] A method for cleaning deposits in the inner cavity of a blade by liquid-free energy-gathering ultrasonic waves, which meets the following requirements: ultrasonic waves are applied to workpieces to be cleaned with stubborn deposits attached, and the sediments are removed through the vibration of the ultrasonic waves on the workpieces to be cleaned. destruction and removal operations.

[0100] The workpiece to be cleaned is a high-pressure turbine blade, and the optimal requirements determined through experimental research are as follows:

[0101] The specific position where the ultrasonic wave acts on the workpiece to be cleaned with stubborn deposits attached, that is, the connection position between the ultrasonic transducer vibrator and the workpiece to be cleaned is the tenon of the blade;

[0102] The ultrasonic working frequency used is 20-25KHz, and the ultrasonic power is 200W;

[0103] The ultrasonic cleaning time used is 1-2 cycles, each cycle is 2 minutes; ...

Embodiment 2

[0106] The content of this embodiment is basically the same as that of Embodiment 1, and its difference mainly lies in:

[0107] The ultrasonic working frequency used is 15KHz, and the ultrasonic power is 400W.

[0108] The ultrasonic cleaning time used was 3 cycles of 1 minute each.

[0109] The ultrasound used was operated with a maximum amplitude of 90 μm. The working frequency of the ultrasonic wave used is more than 4 times of the fatigue frequency of the workpiece to be cleaned, and the maximum amplitude of the used ultrasonic wave is less than 1 / 8 of the fatigue amplitude of the workpiece to be cleaned.

Embodiment 3

[0111] The content of this embodiment is basically the same as that of Embodiment 1, and its difference mainly lies in:

[0112] The ultrasonic working frequency used is 30 KHz, and the ultrasonic power is 50.

[0113] The ultrasonic cleaning time used is 1 cycle, each cycle is 5 minutes.

[0114] The ultrasound used was operated with a maximum amplitude of 15 μm. The working frequency of the ultrasonic wave used is more than 6 times of the fatigue frequency of the workpiece to be cleaned, and the maximum amplitude of the used ultrasonic wave is less than 1 / 10 of the fatigue amplitude of the workpiece to be cleaned.

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Abstract

A method of cleaning sediment in an inner cavity of a blade by no-liquid energy gathered ultrasonic wave is characterized by meeting the requirements that the ultrasonic wave acts on a workpiece to be cleaned attached with the stubborn sediment, and damage and clear operations to the sediment are achieved through a vibration function of the energy gathered ultrasonic wave with a certain direction to the workpiece to be cleaned. The method of cleaning the sediment in the inner cavity of the blade by the no-liquid energy gathered ultrasonic wave has the advantages of being capable of providing pioneering application of the ultrasonic wave, prominent in advantages in the relative technology field of processing the stubborn sediment on the surface of the workpiece, obviously better and unexpected in technical effect, and expectable and huge in economic value and social value.

Description

technical field [0001] The invention relates to the maintenance and cleaning technology of workpieces working in high-temperature environments such as engine blades, and in particular provides a method for cleaning deposits in the inner cavity of blades with liquid-free energy-gathering ultrasonic waves. Background technique [0002] The problem of removing foreign matter in the inner cavity of high-pressure turbine blades has not been solved, so a large number of blades are backlogged and cannot be installed and used. Especially in engine deep repair, this problem is more prominent. The pass rate of the original process for removing the deposits of high-pressure turbine blades is very low, and a large number of blades cannot be installed and used because the deposits cannot be removed, which seriously affects the process of overhaul. [0003] In the deep repair of the engine, if the original water-based cleaning agent with surfactant as the main component is used in combin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B7/02
Inventor 冮冶刘军和刘本武窦立军刘志强
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION