Method for characterizing colors of passivation film

A passivation film and color technology, applied in the direction of color measurement devices, etc., can solve the problems of appearance color recording and contrast obstacles, low work efficiency, errors, etc., to improve passivation work efficiency and accuracy, and reduce unqualified batches , the effect of improving work efficiency

Active Publication Date: 2019-04-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The passivation technology for preparing a variety of colors is now relatively mature, including blue-white, golden yellow, green, black, rainbow colors, etc., which greatly enriches the appearance of colored passivation films, but there has been little color characterization of the appearance of passivation films. There are researches that seriously restrict the optimal development of passivation technology and the control of passivation film performance
[0003] For a long time, for the inspection of the appearance color of the color passivation film, no matter in the process of scientific research or in industrial production, the visual method is use

Method used

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  • Method for characterizing colors of passivation film
  • Method for characterizing colors of passivation film

Examples

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Embodiment 1

[0023] A method for characterizing the color of a passivation film, comprising the following steps:

[0024] (1) Select three passivated workpieces prepared under the same passivation process conditions, and age them in the greenhouse for 24 hours for standby;

[0025] (2) In step (1), a point is randomly selected on the passivation film of each passivation workpiece as a standard point, and the standard point is named Standard0, and its L, a, and b chromaticity values ​​(L* 0 、a* 0 、b* 0 ); on the same passivated workpiece, 5 points are uniformly selected as test points at other positions except the standard point, and their L, a, and b values ​​are measured with a spectrophotometer (L* n 、a* n 、b* n ),Such as figure 1 As shown, the position of 0 is the standard point, the positions of 1, 2, 3, 4, and 5 are the test points, and the test points are respectively named Sample1, Sample2, Sample3, Sample4, and Sample5;

[0026] (3) Compare the chromaticity value of step (2) ...

Embodiment 2

[0039] A method for characterizing the color of a passivation film, comprising the following steps:

[0040] (1) Select 4 passivated workpieces prepared under the same passivation process conditions, and age them in the greenhouse for 24 hours for standby;

[0041] (2) In step (1), a point is randomly selected on the passivation film of each passivation workpiece as a standard point, and the standard point is named Standard0, and its L, a, and b chromaticity values ​​(L* 0 、a* 0 、b* 0 ); on the same passivated workpiece, 6 points are uniformly selected as test points at other positions except the standard point, and their L, a, and b values ​​are measured with a spectrophotometer (L* n 、a* n 、b* n ), n is 6, such as figure 2 As shown, the position of 0 is the standard point, the positions of 1, 2, 3, 4, 5, and 6 are the test points, and the test points are respectively named Sample1, Sample2, Sample3, Sample4, Sample5, and Sample6;

[0042] (3) Compare the chromaticity ...

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Abstract

The invention discloses a method for characterizing colors of a passivation film. The method comprises the following steps: measuring appearance color data of a passivation film by a spectrophotometer; setting a threshold chromatic aberration to be 10, and averaging the chromaticity value for a uniform color within the threshold, and the area is the full color area; averaging the chromaticity value for a uniform color within the threshold for a passivation film containing two or more color types; retaking and calculating the standard points for the part outside the threshold; finally, characterizing different chromaticity values and areas of multiple colors, so that the appearance color property of the passivation film can be more accurately evaluated. Compared with a naked eye, a more accurate digital characterization method is proposed, and the color quality can be judged. Compared with the way of observing with naked eyes, a more accurate digital characterization method is proposed,and the color quality can be judged. The passivation quality is detected, and the guidance on the passivation process is provided.

Description

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Claims

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Application Information

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Owner KUNMING UNIV OF SCI & TECH
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