NO914574L - Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemne - Google Patents
Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemneInfo
- Publication number
- NO914574L NO914574L NO91914574A NO914574A NO914574L NO 914574 L NO914574 L NO 914574L NO 91914574 A NO91914574 A NO 91914574A NO 914574 A NO914574 A NO 914574A NO 914574 L NO914574 L NO 914574L
- Authority
- NO
- Norway
- Prior art keywords
- metal blank
- detected
- pin holes
- light source
- blanks
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/894—Pinholes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
- G01N2021/889—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques providing a bare video image, i.e. without visual measurement aids
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Continuous Casting (AREA)
Abstract
Fremgangsmåte for detektering av pin-hull i strengstøpte metallemner, særlig strengstøpte stål- og aluminiumemner. Strengstøpte metallemner transporteres kontinuerlig forbi en symmetrisk lyskilde bestående av et flertall enkeltlyskilder anordnet i sirkel eller på annen måte slik at lyset faller tilnærmet symmetrisk inn på den del av overflaten av metallemnet som skal detekteres, slik at overflaten av den del av det strengstøpte metallemne som vender mot lyskilden opplyses, mens pin-hull vil forbli uopplyst. Reflektert lys fra overflaten av det strengstøpte metallemne detekteres ved hjelp av et linjescankamera anordnet sentralt i forhold til lyskilden og som har en scanningsretning vinkelrett på bevegelsesretningen for metallemnet. Pin-hull i metallemnet detekteres ved registrering av en reflektert lysintensitet under en valgt terskel verdi.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO91914574A NO914574L (no) | 1991-11-22 | 1991-11-22 | Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemne |
JP4297189A JPH05232044A (ja) | 1991-11-22 | 1992-11-06 | 連続鋳造金属ビレットのピンホールを検出する方法 |
KR1019920021750A KR930009681A (ko) | 1991-11-22 | 1992-11-19 | 연속적으로 주조한 강편에 존재하는 핀호울을 탐지하기 위한 방법 |
US07/979,616 US5363901A (en) | 1991-11-22 | 1992-11-19 | Method for detecting pinholes in continuously cast billets |
CA002083449A CA2083449A1 (en) | 1991-11-22 | 1992-11-20 | Method for detecting pinholes in continuously cast billets |
EP92310658A EP0543677A1 (en) | 1991-11-22 | 1992-11-23 | Method for detecting pinholes in continuously cast billets |
TW081110323A TW224435B (no) | 1991-11-22 | 1992-12-23 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO91914574A NO914574L (no) | 1991-11-22 | 1991-11-22 | Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemne |
Publications (2)
Publication Number | Publication Date |
---|---|
NO914574D0 NO914574D0 (no) | 1991-11-22 |
NO914574L true NO914574L (no) | 1993-05-24 |
Family
ID=19894618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO91914574A NO914574L (no) | 1991-11-22 | 1991-11-22 | Fremgangsmaate for detektering av pin-hull i strengestoeptemetallemne |
Country Status (7)
Country | Link |
---|---|
US (1) | US5363901A (no) |
EP (1) | EP0543677A1 (no) |
JP (1) | JPH05232044A (no) |
KR (1) | KR930009681A (no) |
CA (1) | CA2083449A1 (no) |
NO (1) | NO914574L (no) |
TW (1) | TW224435B (no) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920735A (en) * | 1997-01-16 | 1999-07-06 | Gelphman; Janet L. | Method and apparatus to observe the geometry of relative motion |
US7460703B2 (en) * | 2002-12-03 | 2008-12-02 | Og Technologies, Inc. | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar |
US7324681B2 (en) | 2002-12-03 | 2008-01-29 | Og Technologies, Inc. | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar |
US6950546B2 (en) | 2002-12-03 | 2005-09-27 | Og Technologies, Inc. | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar |
EA009650B1 (ru) * | 2004-09-21 | 2008-02-28 | Асахи Касеи Кемикалз Корпорейшн | Промышленный способ выделения побочно полученного спирта |
KR100891842B1 (ko) * | 2007-08-28 | 2009-04-07 | 주식회사 포스코 | 원형 선재 광학결함 검출장치 및 방법 |
JP6136892B2 (ja) * | 2013-11-27 | 2017-05-31 | トヨタ自動車株式会社 | 引上式連続鋳造装置及び引上式連続鋳造方法 |
DE102014011268A1 (de) * | 2014-07-29 | 2016-02-04 | Brückner Maschinenbau GmbH & Co. KG | Optische Fehlstellendetektion |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2758712A (en) * | 1952-08-18 | 1956-08-14 | Linderman Engineering Company | Detecting apparatus |
NL282725A (no) * | 1961-09-05 | |||
US3715476A (en) * | 1969-01-16 | 1973-02-06 | Nippon Steel Corp | Method and apparatus for detecting pinholes on sheet articles |
US3781117A (en) * | 1972-03-31 | 1973-12-25 | United States Steel Corp | Apparatus for surface inspection of moving material |
US3795452A (en) * | 1973-02-28 | 1974-03-05 | Us Air Force | Instrument for automatically inspecting integrated circuit masks for pinholes and spots |
US4028728A (en) * | 1976-04-02 | 1977-06-07 | Western Electric Company, Inc. | Method of and video system for identifying different light-reflective surface areas on articles |
IS1093B6 (is) * | 1976-12-10 | 1982-09-24 | Ashimori Kogyo Kabushiki Kaisha, (Ashimori Industry Co., Ltd.) | Ný gerð af korklínu og aðferð til að búa hana til |
GB2019009B (en) * | 1978-03-23 | 1982-11-17 | Futec Inc | Method of imaging the surface of a continuous cast hot metal strip for detection of scarfs appearing thereon and apparatus for the same |
US4223346A (en) * | 1979-04-05 | 1980-09-16 | Armco Inc. | Automatic defect detecting inspection apparatus |
JPS57132042A (en) * | 1981-02-09 | 1982-08-16 | Fuji Electric Co Ltd | Inspecting method of defect on surface of article |
DE3113120C1 (de) * | 1981-03-27 | 1982-09-30 | Mannesmann AG, 4000 Düsseldorf | Vorrichtung zur Inspektion von Gussstraengen in einer Stranggiessanlage |
JPS5892938A (ja) * | 1981-11-30 | 1983-06-02 | Matsushita Electric Ind Co Ltd | 傷測定装置 |
DE3200007A1 (de) * | 1982-01-02 | 1983-07-14 | Klöckner-Werke AG, 4100 Duisburg | Verfahren und vorrichtung zum pruefen von metallischen proben fuer die spektralanalytische untersuchung |
CH656466A5 (de) * | 1982-02-15 | 1986-06-30 | Alusuisse | Verfahren und vorrichtung zur oberflaechenkontrolle eines werkstoffes. |
FR2528740A1 (fr) * | 1982-06-18 | 1983-12-23 | Clesid Sa | Dispositif de controle de la coulee continue de l'acier |
JPS60146134A (ja) * | 1984-01-11 | 1985-08-01 | Matsushita Electric Ind Co Ltd | 表面疵検出用照明装置 |
CA1229392A (en) * | 1984-02-28 | 1987-11-17 | Hirosato Yamane | Method and apparatus for detection of surface defects of hot metal body |
JPH0676960B2 (ja) * | 1984-12-12 | 1994-09-28 | 株式会社日立製作所 | 繰返し荷重を受ける機械構造物の余寿命評価方法およびその装置 |
JPS6330164A (ja) * | 1986-07-22 | 1988-02-08 | Kubota Ltd | 連続鋳造における鋳造欠陥の検出方法 |
DE3810349A1 (de) * | 1988-03-26 | 1989-10-05 | Agfa Gevaert Ag | Verfahren sowie anordnung zur darstellung von oberflaechenfehlern an aufzeichnungstraegern |
IL91492A (en) * | 1988-10-03 | 1994-07-31 | Hughes Aircraft Co | Optical inspection system for soldering joints and inspection method |
EP0370527B1 (en) * | 1988-11-24 | 1994-02-02 | Omron Tateisi Electronics Co. | Method of and apparatus for inspecting substrate |
JPH0739025B2 (ja) * | 1988-11-30 | 1995-05-01 | 川崎製鉄株式会社 | 急冷合金薄帯のオンライン検査方法 |
JP3072998B2 (ja) * | 1990-04-18 | 2000-08-07 | 株式会社日立製作所 | はんだ付け状態検査方法及びその装置 |
-
1991
- 1991-11-22 NO NO91914574A patent/NO914574L/no unknown
-
1992
- 1992-11-06 JP JP4297189A patent/JPH05232044A/ja active Pending
- 1992-11-19 KR KR1019920021750A patent/KR930009681A/ko not_active Application Discontinuation
- 1992-11-19 US US07/979,616 patent/US5363901A/en not_active Expired - Fee Related
- 1992-11-20 CA CA002083449A patent/CA2083449A1/en not_active Abandoned
- 1992-11-23 EP EP92310658A patent/EP0543677A1/en not_active Withdrawn
- 1992-12-23 TW TW081110323A patent/TW224435B/zh active
Also Published As
Publication number | Publication date |
---|---|
EP0543677A1 (en) | 1993-05-26 |
KR930009681A (ko) | 1993-06-21 |
CA2083449A1 (en) | 1993-05-23 |
TW224435B (no) | 1994-06-01 |
US5363901A (en) | 1994-11-15 |
JPH05232044A (ja) | 1993-09-07 |
NO914574D0 (no) | 1991-11-22 |
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