JPS6246804B2 - - Google Patents

Info

Publication number
JPS6246804B2
JPS6246804B2 JP13198680A JP13198680A JPS6246804B2 JP S6246804 B2 JPS6246804 B2 JP S6246804B2 JP 13198680 A JP13198680 A JP 13198680A JP 13198680 A JP13198680 A JP 13198680A JP S6246804 B2 JPS6246804 B2 JP S6246804B2
Authority
JP
Japan
Prior art keywords
flaw
laser beam
steel piece
real
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP13198680A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5756704A (en
Inventor
Akinobu Ogasawara
Toshiro Matsubara
Shuji Naito
Akyoshi Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP13198680A priority Critical patent/JPS5756704A/ja
Publication of JPS5756704A publication Critical patent/JPS5756704A/ja
Publication of JPS6246804B2 publication Critical patent/JPS6246804B2/ja
Granted legal-status Critical Current

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
    • G01N21/8901—Optical details; Scanning details

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)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
JP13198680A 1980-09-22 1980-09-22 Detector for surface flaw of bloom Granted JPS5756704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13198680A JPS5756704A (en) 1980-09-22 1980-09-22 Detector for surface flaw of bloom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13198680A JPS5756704A (en) 1980-09-22 1980-09-22 Detector for surface flaw of bloom

Publications (2)

Publication Number Publication Date
JPS5756704A JPS5756704A (en) 1982-04-05
JPS6246804B2 true JPS6246804B2 (enrdf_load_stackoverflow) 1987-10-05

Family

ID=15070877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13198680A Granted JPS5756704A (en) 1980-09-22 1980-09-22 Detector for surface flaw of bloom

Country Status (1)

Country Link
JP (1) JPS5756704A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8304330D0 (en) * 1983-02-16 1983-03-23 Howell M I Electromagnetic surveying of pipes and cables
JPS62203081A (ja) * 1986-03-03 1987-09-07 Tokyo Gas Co Ltd 複数埋設管の検知方法及びその装置
JP4677628B2 (ja) * 2004-09-28 2011-04-27 レーザーテック株式会社 欠陥検出装置及び欠陥検出方法並びにパターン基板の製造方法
JP5396824B2 (ja) * 2008-11-13 2014-01-22 Ｊｆｅスチール株式会社 スラブ表面欠陥検出方法およびスラブ表面欠陥検出装置

Also Published As

Publication number Publication date
JPS5756704A (en) 1982-04-05

Similar Documents

Publication Publication Date Title
JP3909377B2 (ja) 屋外用距離計測装置
US6462813B1 (en) Surface defect inspection system and method
US20070286471A1 (en) Auto Distinction System And Auto Distinction Method
JPH08285780A (ja) 鋼管の外面疵検査方法
JPH08178867A (ja) 平鋼熱間探傷装置
JPS6246804B2 (enrdf_load_stackoverflow)
JP2001281226A (ja) 蛍光磁粉探傷方法および蛍光磁粉探傷装置
JP4643785B2 (ja) 表面検査装置
JPH06148098A (ja) 表面欠陥検査装置
JP3446008B2 (ja) 表面検査装置
JP3940336B2 (ja) 表面検査装置
CN116843640A (zh) 瓷砖表面凹坑缺陷检测方法、系统及存储介质
JPH0658733A (ja) ガラスびんの偏肉検査方法
JP3531002B2 (ja) 表面検査装置
JPH09113465A (ja) 亜鉛メッキ系鋼板用表面欠陥検出装置
JPH0674972B2 (ja) パタ−ン欠陥検出装置
AU2007216895A1 (en) Methods for detecting compression wood in lumber
JPS6142221B2 (enrdf_load_stackoverflow)
JP2010210322A (ja) 酸洗鋼板のスケール残り検査装置
JPH1010053A (ja) 表面欠陥検査装置
JPS5922895B2 (ja) 表面疵自動探傷方法及び装置
JP2973153B2 (ja) コイル先端形状検出装置
JPH07280746A (ja) 金属板表面疵抽出装置
JPH0815172A (ja) 外観検査方法
JPH08235543A (ja) 汚れ等の欠陥検出方法及び装置