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A kind of penetrant detection pre-cleaning method

Active Publication Date: 2020-06-23
LUOYANG LYC BEARING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only cleans the surface to be inspected, but it is difficult to remove the water, oil, etc. that remain in the discontinuity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention can be illustrated in detail by the following specific examples.

[0018] This embodiment specifically illustrates a method for pre-cleaning of penetration detection, which includes the following steps:

[0019] (1) Use iron brushes, brushes, clean cloths and other tools to remove water, oil, grease, dust or other attachments on the surface to be inspected. In this embodiment, clean cloths are used;

[0020] (2) Spray cleaning agent HR-ST on the surface to be inspected, and wipe the surface to be inspected with a clean lint-free cloth. For the surface that only needs to be detected locally, the cleaning area should be large enough, at least 25mm should be extended outward from the surrounding area of ​​the detected part;

[0021] (3) Naturally dry, the surface to be inspected after drying should be clean, without any water stains, oil stains and cleaning agent residues;

[0022] (4) Shake the solvent-suspended imaging agent HD-ST well, spray it o...

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PUM

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Abstract

The invention discloses a precleaning method for penetration testing. The method comprises the following steps that 1, water, oil contamination, grease, dust and other attachments on a tested surfaceare removed through a tool; 2, the tested surface is sprayed with cleaning agent, and the tested surface is wiped thoroughly through a clean downless cloth; 3, natural drying is carried out to ensurethat the dried tested surface is clean; 4, a solvent suspendable developer is sufficiently shaken up and evenly sprayed to the tested surface; 5, after 10-15min, if the coating color of the developeron the tested surface is uniform and not obviously changed, the next step can be executed; 6, a clean cloth is used for wiping away the developer as far as possible, and then a clean downless cloth sprayed with cleaning agent is used for thoroughly cleaning the tested surface; and 7, natural drying is carried out to ensure that the dried tested surface is clean and free of cleaning agent and developer residue. Water, oil and other pollutants existing and remaining on the discontinuous part can be effectively removed.

Description

technical field [0001] The invention relates to the field of penetration testing of non-destructive testing, and mainly relates to a pre-cleaning method for penetration testing. Background technique [0002] Penetration testing is a non-destructive testing method based on liquid capillary action (capillary phenomenon) to detect discontinuous openings on the surface of solid materials. It can detect various metal (including non-ferromagnetic metal) materials and non-metallic materials. It is suitable for raw materials, The surface quality inspection of in-process parts, finished parts and in-service parts has a wide range of uses. Before penetrant testing, the surface to be tested should be pre-cleaned and dried, and then an appropriate penetrant (fluorescent dye or colored dye) is applied to the test area. Due to capillary action, the penetrant penetrates into the discontinuity of the opening of the surface to be tested. After an appropriate penetration time, remove the exc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B1/00B08B3/08G01N21/91
Inventor 陈文君龚建勋李昭昆彭志战张玲仵永刚刘菁
Owner LUOYANG LYC BEARING