CN104897679A - Steel plate surface defect inspection method - Google Patents
Steel plate surface defect inspection method Download PDFInfo
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- CN104897679A CN104897679A CN201410079192.XA CN201410079192A CN104897679A CN 104897679 A CN104897679 A CN 104897679A CN 201410079192 A CN201410079192 A CN 201410079192A CN 104897679 A CN104897679 A CN 104897679A
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- steel plate
- inspection
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- light beam
- light source
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Abstract
The invention provides a steel plate surface defect inspection method. The method comprises the following steps: selecting a light source capable of emitting white light beam with moderate intensity, and allowing the light beam to be emitted on the surface of a steel plate according to an included angle between the light beam and the inspection surface of the steel plate of 15-20DEG, wherein the surface covered by light is the inspection surface; and rotating the light source with an incidence point as a start point to gradually irradiate other positions until inspection of the defects of the whole surfaces of the steel plate is completed. The method has the advantages of rapid, accurate, comprehensive and effectively inspection of all fine detects on the surfaces of the steel plate, fast inspection speed, high working efficiency, avoiding of missing inspection, inaccurate determination and other problems, great improvement of the inspection quality, and no requirements on onsite light, and is especially suitable for indoor steel plate surface quality inspection.
Description
Technical field
The invention belongs to quality inspection technology utilization, particularly relate to a kind of inspection method for hot rolled sheet metal surface defect.
Background technology
In hot rolled steel plate production run, due to a variety of causes, inevitably there is various defect on the upper and lower surface of steel plate.At present, the inspection of Surface Defects in Steel Plate generally adopts macroscopic method to carry out judging and checking.The method still can check out for larger defect, but for partly less defect, only relies on naked eyes to be difficult to directly carry out identification effectively rapidly, often exist undetected and judge inaccurate problem, causing quality objection.Therefore how to check out the less defect of surface of steel plate quickly and accurately, just become the important ring in plate surface quality inspection and a large difficult point.
Summary of the invention
The present invention aims to provide a kind of inspection method of Surface Defects in Steel Plate, can check out the less defect of surface of steel plate quickly and accurately, thus avoids undetected and judge inaccurate problem.
For reaching this object, this invention takes following solution:
An inspection method for Surface Defects in Steel Plate, is characterized in that, concrete grammar is:
Select the light source of white light beam.During inspection, by out exposed for steel plate check surface, make light beam and steel plate check surface be that the angle of 15 °-20 ° is incident upon surface of steel plate, light area coverage is check surface, with the naked eye checks the surface of steel plate of light irradiated site; In checking process, take incidence point as starting point, rotate light source, progressively irradiate other positions, until complete the inspection of whole Surface Defects in Steel Plate.
Beneficial effect of the present invention is:
The present invention quick and precisely, can check out the various defects of surface of steel plate, especially all tiny defects comprehensively and effectively, and check that speed is fast, work efficiency is high, can avoid occurring undetected and judging the problems such as inaccurate, greatly improve and check on the quality.The inventive method, to on-the-spot light no requirement (NR), is particularly useful for indoor plate surface quality Inspection.
Embodiment
The concrete steps of the inspection method of Surface Defects in Steel Plate of the present invention are:
1, select the light source of white light beam, the intensity of light source is adjusted to moderate brightness.
2, before checking, first by out exposed for steel plate check surface.When checking upper surface of steel plate, steel plate check surface is placed upward; When checking lower surface of steel plate, steel plate is placed in and checks on stand, make lower surface of steel plate outside exposed, also examine steel plate can be placed in other places indoor.
When 3, checking, light beam and steel plate check surface should be made to be that the angle of 15 °-20 ° is irradiated to surface of steel plate, using light area coverage as check surface, with the naked eye the surface of steel plate of light irradiated site to be checked.
4, in checking process, with light beam incidence point for starting point, slow circumvolve light source, progressively irradiates other positions of steel plate, until complete the inspection of whole Surface Defects in Steel Plate.
Claims (1)
1. an inspection method for Surface Defects in Steel Plate, is characterized in that, concrete grammar is:
Select the light source of white light beam; During inspection, by out exposed for steel plate check surface, make light beam and steel plate check surface be that the angle of 15 °-20 ° is incident upon surface of steel plate, light area coverage is check surface, with the naked eye checks the surface of steel plate of light irradiated site; In checking process, take incidence point as starting point, rotate light source, progressively irradiate other positions, until complete the inspection of whole Surface Defects in Steel Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079192.XA CN104897679A (en) | 2014-03-05 | 2014-03-05 | Steel plate surface defect inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079192.XA CN104897679A (en) | 2014-03-05 | 2014-03-05 | Steel plate surface defect inspection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104897679A true CN104897679A (en) | 2015-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410079192.XA Pending CN104897679A (en) | 2014-03-05 | 2014-03-05 | Steel plate surface defect inspection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN104897679A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398496A (en) * | 2019-06-05 | 2019-11-01 | 广州Jfe钢板有限公司 | A kind of method that acid rolls plate plate face inspection |
| CN113231480A (en) * | 2021-06-04 | 2021-08-10 | 河南明晟新材料科技有限公司 | Method for rapidly detecting black wire and black line on surface of aluminum coil on line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6166393A (en) * | 1997-08-22 | 2000-12-26 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten | Method and apparatus for automatic inspection of moving surfaces |
| CN1789990A (en) * | 2005-12-01 | 2006-06-21 | 渤海船舶重工有限责任公司 | Automatic online detection method for defects on upper and lower surfaces during steel plate pretreatment process |
| CN101988907A (en) * | 2010-09-16 | 2011-03-23 | 无锡动视科技有限公司 | Image processing system for surface detection of coiled material |
-
2014
- 2014-03-05 CN CN201410079192.XA patent/CN104897679A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6166393A (en) * | 1997-08-22 | 2000-12-26 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten | Method and apparatus for automatic inspection of moving surfaces |
| CN1789990A (en) * | 2005-12-01 | 2006-06-21 | 渤海船舶重工有限责任公司 | Automatic online detection method for defects on upper and lower surfaces during steel plate pretreatment process |
| CN101988907A (en) * | 2010-09-16 | 2011-03-23 | 无锡动视科技有限公司 | Image processing system for surface detection of coiled material |
Non-Patent Citations (2)
| Title |
|---|
| 张洪涛等: "钢板表面缺陷在线视觉检测系统研究", 《传感技术学报》 * |
| 赵学增等: "滚压钢板加工质量在线检测技术的新进展", 《东北林业大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398496A (en) * | 2019-06-05 | 2019-11-01 | 广州Jfe钢板有限公司 | A kind of method that acid rolls plate plate face inspection |
| CN113231480A (en) * | 2021-06-04 | 2021-08-10 | 河南明晟新材料科技有限公司 | Method for rapidly detecting black wire and black line on surface of aluminum coil on line |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150909 |