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Method for detecting residues on a component

A technology for detecting components and residues, applied in the direction of optical testing for defects/defects, etc., can solve problems such as high equipment costs, and achieve the effect of simplifying detection

Inactive Publication Date: 2010-12-22
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electron and atomic force microscopy also require high equipment expense reflected in the cost of the method

Method used

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  • Method for detecting residues on a component
  • Method for detecting residues on a component

Examples

Experimental program
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Embodiment Construction

[0035] In the method according to the invention, the procedure is shown in figure 1 In step 1, place 9 ml of deionized or distilled water as a base solution in a test tube. In step 2 parallel thereto, a reference sample (also called blind or blank sample) of the same composition is prepared, ie as 9 ml of deionized or distilled water in a test tube.

[0036] To prepare the actual wash solution, in step 3, fresh solvent is added to a clean Pasteur pipette in such a way that the solvent-water mixing zone appears in the upper region of the tube filling. The amount of solvent is preferably 1 ml. During mixing, a change in clarity may occur due to a change in the refractive index of the mixture, however it does not indicate cloudiness and disappears within a minute. If persistent turbidity develops, the solvent and / or water is contaminated and should not be used for testing. The water and solvent are then replaced with fresh material.

[0037] In step 4, the part to be inspecte...

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PUM

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Abstract

The present invention relates to a method for detecting residues on a component and particularly on the surface of the component. In order to also allow the testing of surfaces which are difficult to access, without the apparatus outlay growing, the method according to the present invention comprises the following steps:; producing a base solution (1) and a reference solution (2) from water, producing (3) a washing solution by adding fresh solvent to the base solution, filling (4) the component to be tested with the washing solution, wetting (5) the entire inner surface of the component with the washing solution, draining (6) the washing solution out of the component, producing (7) a test solution by adding the washing solution to the base solution, comparing (8) the test solution to the reference solution, and testing (9) whether a turbidity occurs in the mixing zone between the washing solution and the base solution, as proof (10a, 10b) for lubricant on the surface of the component.

Description

technical field [0001] The invention relates to a method for detecting residues on a component and in particular on the surface of the component. Background technique [0002] Most parts still have residues from the manufacturing process after their production. These residues can be macroscopic or can include microscopic changes in the surface. In particular, surfaces can be chemically contaminated. Depending on its intended use, parts must be free from contamination and cleaned accordingly. However, for this purpose, the type of contamination must be known in advance. The method described below is used in the prior art to test the purity of component surfaces. [0003] During the visual inspection of the components with the naked eye (visual inspection), it is checked whether irregularities are discernible on the metallic, shiny surface. Depending on the spottiness of the part after cleaning, it can be decided whether it has to be cleaned again. In the interior of hol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/90G01N21/94
CPCG01N21/94
Inventor 约尔格·莫尔特拉恩克里斯蒂安·林道尔尤里·巴里洛
Owner AIRBUS OPERATIONS GMBH
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