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Dry ice cleaning method of surface layer of aircraft engine component

An aero-engine and dry ice cleaning technology, which is applied in the direction of cleaning methods using gas flow, cleaning methods and utensils, chemical instruments and methods, etc., can solve problems such as unknowable influence, static electricity ignition, etc., to ensure physical and mental health, increase labor force, Likelihood-Reducing Effects

Inactive Publication Date: 2019-01-11
国营芜湖机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, before the ground oil seal of aero-engines and other power devices stored in the factory, it is necessary to use No. 180 washing gasoline for surface decontamination and cleaning, and there is a risk of static electricity ignition; while replacing the cleaning medium and using dry ice for cleaning, consider that the cleaning method is not used in aircraft repairs. The industry is developing and using it, and the impact of dry ice cleaning technology on the various materials of the aviation accessories such as engines is also unknown

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A dry ice cleaning method for the surface of an aero-engine component, the specific steps of which are as follows:

[0018] (1) Prepare the cleaning medium: prepare an appropriate amount of dry ice as the cleaning medium;

[0019] (2) Adjust the air pressure of the equipment: adjust the air supply pressure of the dry ice blasting equipment to keep it between 0.7-0.8MPA;

[0020] (3) Adjust the ice output rate of the equipment: adjust the ice output rate of the dry ice cleaning setting to 1KG / MIN;

[0021] (4) Distance: Adjust so that the distance between the nozzle of the dry ice spray gun and the body is between 30-50CM;

[0022] (5) Vertical: The spraying work needs to make the nozzle of the dry ice spraying nozzle perpendicular to the body;

[0023] (6) Cleaning time: Gently move the nozzle of the dry ice spray gun during work so that the dry ice is evenly sprayed onto the body, and the residence time at each position shall not exceed 5S.

[0024] The spray cleani...

Embodiment 2

[0026] A dry ice cleaning method for the surface of an aero-engine component, the specific steps of which are as follows:

[0027] (1) Prepare the cleaning medium: prepare an appropriate amount of dry ice as the cleaning medium;

[0028] (2) Adjust the air pressure of the equipment: adjust the air supply pressure of the dry ice blasting equipment to keep it at 0.6MPA;

[0029] (3) Adjust the ice output rate of the equipment: adjust the ice output rate of the dry ice cleaning setting to 0.7KG / MIN;

[0030] (4) Distance: Adjust to keep the distance between the nozzle of the dry ice spray gun and the attached parts between 100-110CM;

[0031] (5) Vertical: The spraying work needs to make the nozzle of the dry ice spraying nozzle perpendicular to the attached parts;

[0032] (6) Cleaning time: Gently move the nozzle of the dry ice spray nozzle during work so that the dry ice can be evenly sprayed onto the attached parts, and the residence time at each position shall not exceed 5...

Embodiment 3

[0035] A dry ice cleaning method for the surface of an aero-engine component, the specific steps of which are as follows:

[0036] (1) Prepare the cleaning medium: prepare an appropriate amount of dry ice as the cleaning medium;

[0037] (2) Adjust the air pressure of the equipment: adjust the air supply pressure of the dry ice blasting equipment to keep it at 0.5MPA;

[0038] (3) Adjust the ice output rate of the equipment: adjust the ice output rate of the dry ice cleaning setting to 0.5KG / MIN;

[0039] (4) Distance: Adjust to keep the distance between the dry ice spray nozzle and the cable between 120-130CM;

[0040] (5) Vertical: The spraying work needs to make the nozzle of the dry ice spraying nozzle perpendicular to the cable;

[0041] (6) Cleaning time: Gently move the nozzle of the dry ice spray gun during work so that the dry ice is evenly sprayed onto the cable, and the dwell time at each position shall not exceed 5S.

[0042] The spray cleaning process of this e...

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Abstract

The invention relates to the field of dry ice cleaning, in particular to a dry ice cleaning method of the surface layer of an aircraft engine component. The dry ice cleaning method comprises the following concrete steps: (1) preparation of a cleaning medium; (2) adjustment of air pressure of equipment; (3) adjustment of the ice output rate of the equipment; (4) distance; (5) verticality; and (6) cleaning time. Dry ice evaporates directly in the cleaning process, so that the cost of cleaning up secondary pollution is not needed. Due to on-line cleaning, a lot of downtime is saved, the efficiency is improved, labor and production equipment do not need to be increased, the yield is increased, and the cost is saved. Unlike sand grains, walnut shells, plastic particles and other abrasive media,dry ice particles have no abrasiveness, and dry ice cleaning does not damage a mould, does not damage tolerance and does not damage bearings and machinery. In addition, the on-line cleaning avoids the accident damage of the mould in the process of disassembly and assembly, and the service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to the field of dry ice cleaning, in particular to a dry ice cleaning method for the surface layer of an aeroengine component. Background technique [0002] At present, before the ground oil seal of aero-engines and other power devices stored in the factory, it is necessary to use No. 180 washing gasoline for surface decontamination and cleaning, and there is a risk of static electricity ignition; while replacing the cleaning medium and using dry ice for cleaning, consider that the cleaning method is not used in aircraft repairs. The industry is developing and using it, and the impact of dry ice blasting technology on various materials of the aviation accessories such as engines is also unknown. Based on the material composition and dirt manifestations of various types of engines and other power devices, through research, tests and demonstrations, the impact of dry ice decontamination on the surface of aluminum, copper, iron and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B7/00B08B5/02B08B13/00
CPCB08B5/02B08B7/00B08B13/00
Inventor 张伯年谢克马金波王伟席贻飞吴浩然贾红涛邵东旭
Owner 国营芜湖机械厂
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