CN102649128B - Defect inspection method for surfaces of cold hard rolls - Google Patents
Defect inspection method for surfaces of cold hard rolls Download PDFInfo
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- CN102649128B CN102649128B CN201210141359.1A CN201210141359A CN102649128B CN 102649128 B CN102649128 B CN 102649128B CN 201210141359 A CN201210141359 A CN 201210141359A CN 102649128 B CN102649128 B CN 102649128B
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Abstract
The invention discloses a defect inspection method for the surfaces of cold hard rolls, and belongs to the technical field of cold rolled strip rolling. The method grinds selected cold hard rolls in the rolling direction and the width direction respectively and inspects grinding area to find out an area needing coarseness measurement, so as to obtain an inspection conclusion according to the difference between the coarseness measured value and the mean value. The method can control inspection efficiency according to production rhythms of different production lines, thereby effectively controlling the cost loss caused by inspection and providing a means of reasonably reducing product cost for enterprises. Besides, different grinding modes effectively find out chatter marks in different forms so as to find out defects in time, so that the unqualified products are decreased. Setting different criteria for differentiating coarsenesses can provide judgment for quality inspectors to conduct quantification.
Description
Technical field
The present invention relates to cold rolled sheet rolling technical field, particularly a kind of method of chill volume surface being carried out to defect inspection.
Background technology
In prior art, band steel is after rolling, and usually adopt shallow slot turbulent flow continous way chlorohydric acid pickling unit, emulsion remaining on belt steel surface, after milling train exit is purged by compressed air, belt steel surface still leaves about 350g/m
2residual oil film, residual oil film when not processing, can to band steel matrix Fe formed diaphragm; but residual oil film also can cover the defect of belt steel surface, as pressed against hole and chatter mark etc.; for this defect, if can not Timeliness coverage, a large amount of substandard product will be produced.Therefore, need when not destroying or destroy oil film less, the mass defect of belt steel surface to be found out.But in prior art, normally carry out defect inspection by single polishing mode to belt steel surface, such test mode easily occurs undetected.
Summary of the invention
In order to solve the problem, the present invention proposes and a kind ofly effectively can avoid undetected method of chill volume surface being carried out to defect inspection.
Provided by the invention the method that defect inspection is carried out on chill volume surface to be comprised the following steps:
Volume is wound off by chill;
Chill volume after uncoiling is polished along belt steel rolling direction, makes polishing length can contain the girth of all rolls, and form polishing region;
Described polishing region is checked, finds out the region needing to carry out roughness concentration;
Polished in the width direction in described polishing region;
Described polishing region is checked, finds out the region needing to carry out roughness concentration;
Roughness concentration is carried out to the described region of carrying out roughness concentration that needs, draws roughness metric, and calculate the average of described measured value;
Inspection conclusion is drawn according to the difference between described roughness metric and described average.
As preferably, also comprise the chill volume that selection needs carry out checking; Described selection needs the frequency of carrying out the chill volume checked to be determine according to the rhythm of production of unit.
As preferably, every 5 ~ 7 chill volumes select out the chill volume that needs carry out checking.
As preferably, when the chill volume after described uncoiling is polished along belt steel rolling direction, polishing length >=3m.
As preferably, the method checked described polishing region carries out observation contrast to the intensity of reflected light in described polishing region under directional light.
As preferably, the described region of carrying out roughness concentration that needs is the region of intensity of reflected light exception.
As preferably, according to the difference between described roughness metric and described average draw check conclusion time, if described difference >=0.3 μm, draw the inspection conclusion that defect can impact follow-up punching press.
The rhythm of production control inspection frequency can producing line to the surperficial method of carrying out defect inspection of chill volume on the one hand according to difference provided by the invention, effectively controls the cost allowance checking and bring, provides approach for enterprise rationally reduces product cost; On the other hand, effectively multi-form chatter mark is found out by different polishing modes, by defect Timeliness coverage, reduce the quantity that defective work produces, distinguish standard by the roughness that setting is different, the judgment basis that can quantize as quality control personnel simultaneously.
Detailed description of the invention
In order to understand the present invention in depth, below in conjunction with specific embodiment, the present invention is described in detail.
Provided by the invention the method that defect inspection is carried out on chill volume surface to be comprised the following steps:
S1: selection needs the chill volume carrying out checking.
Wherein, selection needs the frequency of carrying out the chill volume checked can be that root is determined according to the rhythm of production of unit.
Wherein, the chill volume that needs carry out checking can be selected out by every 5 ~ 7 chill volumes.
S2: chillly wind off volume by what need to carry out checking.
S3: polish along belt steel rolling direction to the chill volume after uncoiling, makes polishing length can contain the girth of all rolls, and forms polishing region.
Wherein, when the chill volume after uncoiling is polished along belt steel rolling direction, polishing length can >=3m.
S4: polishing region is checked, finds out the region needing to carry out roughness concentration.
Wherein, the method checked polishing region carries out observation contrast to the intensity of reflected light in polishing region under directional light.
Wherein, the region of carrying out roughness concentration is needed to be the region of intensity of reflected light exception.
S5: polished in the width direction in polishing region.
S6: polishing region is checked, finds out the region needing to carry out roughness concentration.
S7: to needing the region of carrying out roughness concentration to carry out roughness concentration, draw roughness metric, and the average of computation and measurement value.
S8: draw inspection conclusion according to the difference between roughness metric and average.
Wherein, when drawing inspection conclusion according to the difference between roughness metric and average, if difference >=0.3 μm, the inspection conclusion that defect can impact follow-up punching press is drawn.
The rhythm of production control inspection frequency can producing line to the surperficial method of carrying out defect inspection of chill volume on the one hand according to difference provided by the invention, effectively controls the cost allowance checking and bring, provides approach for enterprise rationally reduces product cost; On the other hand, effectively multi-form chatter mark is found out by different polishing modes, by defect Timeliness coverage, reduce the quantity that defective work produces, distinguish standard by the roughness that setting is different, the judgment basis that can quantize as quality control personnel simultaneously.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind is carried out the method for defect inspection to chill volume surface, comprise the chill step winding off volume, roughness concentration is carried out to needing the region of carrying out roughness concentration, draw roughness metric, and calculate the step of the average of described measured value, with, the step checking conclusion is drawn according to the difference between described roughness metric and described average;
It is characterized in that, the described region of carrying out roughness concentration that needs is found out by following steps:
Chill volume after uncoiling is polished along belt steel rolling direction, makes polishing length can contain the girth of all rolls, and form polishing region;
Described polishing region is checked, finds out the region needing to carry out roughness concentration;
Polished in the width direction in described polishing region;
Described polishing region is checked, finds out the region needing to carry out roughness concentration.
2. method according to claim 1, is characterized in that, also comprises the chill volume that selection needs carry out checking; Described selection needs the frequency of carrying out the chill volume checked to be determine according to the rhythm of production of unit.
3. method according to claim 2, is characterized in that, every 5 ~ 7 chill volumes select out the chill volume that needs carry out checking.
4. method according to claim 1, is characterized in that, when the chill volume after described uncoiling is polished along belt steel rolling direction, and polishing length >=3m.
5. method according to claim 1, is characterized in that, the method checked described polishing region carries out observation contrast to the intensity of reflected light in described polishing region under directional light.
6. method according to claim 5, is characterized in that, the described region of carrying out roughness concentration that needs is the region of intensity of reflected light exception.
7. method according to claim 1, is characterized in that, according to the difference between described roughness metric and described average draw check conclusion time, if described difference >=0.3 μm, draw the inspection conclusion that defect can impact follow-up punching press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141359.1A CN102649128B (en) | 2012-05-09 | 2012-05-09 | Defect inspection method for surfaces of cold hard rolls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141359.1A CN102649128B (en) | 2012-05-09 | 2012-05-09 | Defect inspection method for surfaces of cold hard rolls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102649128A CN102649128A (en) | 2012-08-29 |
| CN102649128B true CN102649128B (en) | 2015-05-27 |
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| CN201210141359.1A Active CN102649128B (en) | 2012-05-09 | 2012-05-09 | Defect inspection method for surfaces of cold hard rolls |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108663256B (en) * | 2018-03-19 | 2021-03-09 | 武汉钢铁有限公司 | Sample surface treatment method for X-ray internal stress test |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999048628A1 (en) * | 1998-03-24 | 1999-09-30 | Kawasaki Steel Corporation | Method of manufacturing high-gloss stainless cold rolled steel strip |
| JP2000314707A (en) * | 1999-05-07 | 2000-11-14 | Nkk Corp | Device and method for inspecting surface |
| KR20010060790A (en) * | 1999-12-28 | 2001-07-07 | 이구택 | Method for measurement of cold-rolled steel sheet |
| CN101537431A (en) * | 2008-03-21 | 2009-09-23 | 宝山钢铁股份有限公司 | Method for online predicting and controlling of roughness of surface of cold-rolled thin steel strip |
| CN101972781A (en) * | 2010-11-11 | 2011-02-16 | 西南铝业（集团）有限责任公司 | Auxiliary examination method for weaving texture defect on surface of roller |
-
2012
- 2012-05-09 CN CN201210141359.1A patent/CN102649128B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999048628A1 (en) * | 1998-03-24 | 1999-09-30 | Kawasaki Steel Corporation | Method of manufacturing high-gloss stainless cold rolled steel strip |
| JP2000314707A (en) * | 1999-05-07 | 2000-11-14 | Nkk Corp | Device and method for inspecting surface |
| KR20010060790A (en) * | 1999-12-28 | 2001-07-07 | 이구택 | Method for measurement of cold-rolled steel sheet |
| CN101537431A (en) * | 2008-03-21 | 2009-09-23 | 宝山钢铁股份有限公司 | Method for online predicting and controlling of roughness of surface of cold-rolled thin steel strip |
| CN101972781A (en) * | 2010-11-11 | 2011-02-16 | 西南铝业（集团）有限责任公司 | Auxiliary examination method for weaving texture defect on surface of roller |
Non-Patent Citations (1)
| Title |
|---|
| 三维粗糙度参数算术平均偏差与均方根偏差的规律研究;李伯奎;《工具技术》;20080920(第09期);第107页右栏第2段至第108页右栏第2段 * |
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| Publication number | Publication date |
|---|---|
| CN102649128A (en) | 2012-08-29 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120829 Assignee: BEIJING SHOUGANG COLD ROLLING THIN PLATE CO., LTD. Assignor: Capital Iron & Steel General Company Contract record no.: 2015990001019 Denomination of invention: Defect inspection method for surfaces of cold hard rolls Granted publication date: 20150527 License type: Common License Record date: 20151209 |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
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| CP01 | Change in the name or title of a patent holder |