CN102042955A - Method for detecting surface evenness of steel plate coating - Google Patents
Method for detecting surface evenness of steel plate coating Download PDFInfo
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- CN102042955A CN102042955A CN2009101878101A CN200910187810A CN102042955A CN 102042955 A CN102042955 A CN 102042955A CN 2009101878101 A CN2009101878101 A CN 2009101878101A CN 200910187810 A CN200910187810 A CN 200910187810A CN 102042955 A CN102042955 A CN 102042955A
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Abstract
The invention relates to a method for detecting the surface evenness of a steel plate coating. In the method, by using the characteristics that lines written with a marking pen can be scraped away when immerged in water and are uneven at defect parts, the types and the positions of surface defects of the steel plate coating can be determined according to the shapes of residual pen marks and corresponding measures are taken to control and solve the surface defects; therefore, the surface quality, the insulativity and the corrosion-resistance of the steel plate coating can be improved, which has valuable significance for improving the performance of the steel plate coating. The invention provides a simple and practical method for detecting the surface evenness of a steel plate with a coating. Without any equipment and investment, the method provided by the invention can accurately detect tiny uneven parts which cannot be seen with naked eyes and provide an important quality proof for the production of coatings. The method can be applied to the surface evenness detection of smooth materials.
Description
Technical field
The invention belongs to method of inspection field, be specifically related to a kind of inspection method of cold-rolled silicon steel coat steel plate coating surface smoothness.
Background technology
In the cold-rolled silicon steel coat production run, can produce the small bad defective of point-like coating once in a while, thereby cause the corrosion stability of rejected region coating to reduce, insulating property are not good, occur hot spot in depositing process, the presentation quality and the processing that influence clad plate are used, have in addition can't use.The main cause that forms the coating spot defect be coating liquid levelability before dry solidification bad due to.At present, the coating production technology of silicon steel is to adopt roller coat+high temperature curing process to form, the band steel plate temperature that enters roll coater is high, must cause the levelability of coating poor, thereby causes the coating real surface state formation after the curing to be similar to the wavy of coating roller surface groove.Coating thickness and coating liquid also have certain relation at the levelability of belt steel surface in addition, and coating is thin, and levelability is poor; The wetting state of coating liquid itself is also relevant with levelability with performances such as flowability, viscosity, and wetting state, good fluidity be good leveling property then, the low then good leveling property of viscosity.In a single day because the coating roller surface groove is very little, the degree of depth is about 0.09mm, and the tooth number is 56 teeth, therefore produces this small coating surface wave, the supervisory personnel with the naked eye can't find out at all.Owing to be difficult to check that there is not relevant standard-required in country yet, therefore fail to find out suitable inspection method always, make the inspection of the small spot defect in steel plate coating surface become an insoluble difficult problem.
Summary of the invention
Purpose of the present invention is exactly at the problems referred to above, provides a kind of simple, is convenient to operation, need not to increase any investment, just can detect the method for the small rough and uneven in surface defective in steel plate coating surface exactly, thereby defective is in time controlled.
For this reason, the technical solution that the present invention taked is:
A kind of inspection method of steel plate coating surface smoothness is utilized the scraping property of immersion in a marking pen road and the rough and uneven in surface property of rejected region, according to the shape of residual pen seal, judges the type and the position of coating surface defective.Its concrete grammar is:
The vertical direction that may have a wave bar on detected coated steel sheet surface with the mark stroke on together, and the marking pen seal that water will be drawn is wetting, swipe along a road direction with nail again,, judge the type and the position of coating surface defective according to the situation of scraping back pen seal.
If the residual pen seal of discontinuity or point type is the pen seal that retain in coating surface depression place, illustrate that there is small convex-concave defective in coating surface.
If exist perpendicular to the residual pen seal of a fine strip shape of road direction, promptly judge the steel plate coating air spots.
If the unclear direction that may have the surface wave bar takes all directions all to use several roads of mark stroke, check respectively as stated above then and judge.
Beneficial effect of the present invention is:
Implement the present invention, that can check out that steel plate coating surface exists quickly and easily is small rough and uneven in surface, and can find out the reason that defective produces according to defect type, thereby take corresponding measure, make the in time controlled and solution of defective, thereby improved surface quality, insulativity and the corrosion stability of steel plate coating, had important and practical meanings, for the check of coated steel sheet surface smoothness provides a practicable method to improving coating performance.The inventive method is simple, is convenient to grasp and operation, need not any equipment and investment, just the small rough and uneven in surface inspection exactly that is invisible to the naked eye can be come out, for coating production provides important quality testing foundation.The present invention generally is suitable for smooth material surface flatness inspection.
Embodiment
The inspection method of steel plate coating surface smoothness of the present invention, mainly be to utilize the characteristic that to wipe off after the immersion in a marking pen road and the character of steel plate coating surface imperfection, promptly because surface of steel plate exists rough and uneven in surface, therefore adopt the finger nail that has certain degree of hardness and width to swipe, inevitable being wiped off in a road smooth and projection, a road at depression position then remains in recess naturally, thereby can judge the type and the position of coating surface defective according to the shape of residual pen seal.Its concrete grammar and step are as follows:
At first to judge the roughly position of defective on whole coated steel sheet, so that capturing position with a definite target in view reduces the unnecessary duplication of labour.Then according to judged result, may exist the position of wave bar, court to draw with common marking pen at the coating surface of detected steel plate with the vertical direction of wave bar, and the marking pen seal that water will be drawn is wetting, scrape along a wetting road direction with nail again, if no any road is residual, illustrate that the coating surface flatness is splendid; If residual road arranged, then need to judge the type and the position of coating surface defective according to the residual situation of pen seal.The principle of judging is:
If the residual pen seal of discontinuity or point type illustrates that there is small convex-concave defective in coating surface;
If exist perpendicular to the residual pen seal of a fine strip shape of road direction, can conclude that then there is defective in the steel plate coating surface, judge according to rejected region and type simultaneously to produce reason, and in time with information feedback to concerned process steps.For the coated steel sheet that adopts roller coat to produce, if produce the residual pen seal of this fine strip shape, then the spacing between the residual pen seal of fine strip shape is directly corresponding with the cutting spacing of coating roller, can be by to coating thickness with the belt steel temperature that enters coating machine is adjusted and countermeasure such as control is solved.
If do not know that may there be the position or the direction of wave bar in coating surface before checking, then can use several roads of mark stroke respectively, and then check respectively as stated above, judge or handle along steel plate coating surface all directions.
Claims (1)
1. the inspection method of a steel plate coating surface smoothness is characterized in that, utilizes the scraping property of immersion in a marking pen road and the rough and uneven in surface property of rejected region, according to the shape of residual pen seal, judges the type and the position of coating surface defective; Its concrete grammar is:
The vertical direction that may have a wave bar on detected coated steel sheet surface with the mark stroke on together, and the marking pen seal that water will be drawn is wetting, swipe along a road direction with nail again,, judge the type and the position of coating surface defective according to the situation of scraping back pen seal:
If the residual pen seal of discontinuity or point type is the pen seal that retain in coating surface depression place, illustrate that there is small convex-concave defective in coating surface;
If exist perpendicular to the residual pen seal of a fine strip shape of road direction, promptly judge the steel plate coating air spots;
If the unclear direction that may have the surface wave bar takes all directions all to use several roads of mark stroke, check respectively as stated above then and judge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101878101A CN102042955B (en) | 2009-10-10 | 2009-10-10 | Method for detecting surface evenness of steel plate coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101878101A CN102042955B (en) | 2009-10-10 | 2009-10-10 | Method for detecting surface evenness of steel plate coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102042955A true CN102042955A (en) | 2011-05-04 |
| CN102042955B CN102042955B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101878101A Active CN102042955B (en) | 2009-10-10 | 2009-10-10 | Method for detecting surface evenness of steel plate coating |
Country Status (1)
| Country | Link |
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| CN (1) | CN102042955B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123843A (en) * | 2016-08-23 | 2016-11-16 | 张家港华日法兰有限公司 | The detection method of flange surface flatness |
| CN106382910A (en) * | 2016-08-23 | 2017-02-08 | 张家港华日法兰有限公司 | Flange surface flatness detection method |
| CN108956456A (en) * | 2018-09-20 | 2018-12-07 | 厦门文仪电脑材料有限公司 | A method of detection paper surface coating homogeneity |
| CN109355974A (en) * | 2018-09-20 | 2019-02-19 | 厦门文仪电脑材料有限公司 | A kind of preparation process and method of temperature-sensitive print paper |
| CN115164786A (en) * | 2022-08-11 | 2022-10-11 | 深圳市深赛尔股份有限公司 | Paint surface flatness detection method and equipment for environment-friendly water-based coil steel coating |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0151194A1 (en) * | 1984-01-28 | 1985-08-14 | VEB Stahl- und Walzwerk "Wilhelm Florin" Hennigsdorf | Method of improving the evenness of rolled steel |
| CN2125122U (en) * | 1991-12-28 | 1992-12-16 | 上海钢管厂 | Surveying instrument for survey surface defect or hollow of metal pipe or board |
| CN201269852Y (en) * | 2008-09-18 | 2009-07-08 | 宝山钢铁股份有限公司 | Surface scratch on-line detection device for continuous casting plate blank |
-
2009
- 2009-10-10 CN CN2009101878101A patent/CN102042955B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123843A (en) * | 2016-08-23 | 2016-11-16 | 张家港华日法兰有限公司 | The detection method of flange surface flatness |
| CN106382910A (en) * | 2016-08-23 | 2017-02-08 | 张家港华日法兰有限公司 | Flange surface flatness detection method |
| CN108956456A (en) * | 2018-09-20 | 2018-12-07 | 厦门文仪电脑材料有限公司 | A method of detection paper surface coating homogeneity |
| CN109355974A (en) * | 2018-09-20 | 2019-02-19 | 厦门文仪电脑材料有限公司 | A kind of preparation process and method of temperature-sensitive print paper |
| CN109355974B (en) * | 2018-09-20 | 2021-07-02 | 厦门文仪电脑材料有限公司 | Preparation process and method of thermosensitive plate paper |
| CN115164786A (en) * | 2022-08-11 | 2022-10-11 | 深圳市深赛尔股份有限公司 | Paint surface flatness detection method and equipment for environment-friendly water-based coil steel coating |
| CN115164786B (en) * | 2022-08-11 | 2023-03-10 | 深圳市深赛尔股份有限公司 | Paint surface flatness detection method and equipment for environment-friendly water-based coil steel coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102042955B (en) | 2012-11-28 |
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