Supercharge Your Innovation With Domain-Expert AI Agents!

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
View PDF4 Cites 0 Cited by
  • 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 used. Although this method is simple and intuitive, it cannot accurately determine the appearance color of the passivation film. Quantitative evaluation of the passivation film color uniformity can not be concretely reflected, and the work efficiency is low, it is easy to cause great errors, and it also causes great obstacles to the record and comparison of the appearance color
Moreover, it is easily affected by light, angle, and human emotions. There is no scientific and standardized method to specifically characterize the appearance and color of the passivation film, so it causes great difficulties for production process control and quality evaluation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for characterizing colors of passivation film
  • Method for characterizing colors of passivation film

Examples

Experimental program
Comparison scheme
Effect test

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

technical field [0001] The invention relates to the field of surface color measurement, in particular to a digital characterization method for the surface color of a colored passivation film. Background technique [0002] The most widely used method in steel anti-corrosion measures is surface galvanizing. In order to prevent the rapid corrosion of the zinc layer after galvanizing, passivation treatment is often performed on the surface to form a dense passivation film on the surface of the zinc layer to protect The role of the galvanized layer and the metal substrate. At present, the widely used color passivation treatment technology can not only play a good anti-corrosion effect, but also has a good decorative effect. The colored passivation film has been applied to many fields, including parts, pipes and so on. The passivation technology for preparing a variety of colors is now relatively mature, including blue-white, golden yellow, green, black, rainbow colors, etc., whi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01J3/46
CPCG01J3/46
Inventor 范云鹰白明明
Owner KUNMING UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com