JPS51135590A - Surface defect detection method and its equipment - Google Patents

Surface defect detection method and its equipment

Info

Publication number
JPS51135590A
JPS51135590A JP5984575A JP5984575A JPS51135590A JP S51135590 A JPS51135590 A JP S51135590A JP 5984575 A JP5984575 A JP 5984575A JP 5984575 A JP5984575 A JP 5984575A JP S51135590 A JPS51135590 A JP S51135590A
Authority
JP
Japan
Prior art keywords
equipment
detection method
defect detection
surface defect
darker
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.)
Granted
Application number
JP5984575A
Other languages
Japanese (ja)
Other versions
JPS5759933B2 (en
Inventor
Masaaki Tarui
Kanji Kizaki
Hiroyuki Shiozaki
Isao Takahashi
Takeshi Nara
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.)
IHI Corp
Original Assignee
Ishikawajima Harima Heavy Industries Co Ltd
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 Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd
Priority to JP5984575A priority Critical patent/JPS51135590A/en
Publication of JPS51135590A publication Critical patent/JPS51135590A/en
Publication of JPS5759933B2 publication Critical patent/JPS5759933B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE: The surface of high-temperature metal is cooled or heated forcibly to make the defective section brighter or darker than the other sections and surface defects are detected easily by optically detecting the difference in brightness.
COPYRIGHT: (C)1976,JPO&Japio
JP5984575A 1975-05-20 1975-05-20 Surface defect detection method and its equipment Granted JPS51135590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5984575A JPS51135590A (en) 1975-05-20 1975-05-20 Surface defect detection method and its equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5984575A JPS51135590A (en) 1975-05-20 1975-05-20 Surface defect detection method and its equipment

Publications (2)

Publication Number Publication Date
JPS51135590A true JPS51135590A (en) 1976-11-24
JPS5759933B2 JPS5759933B2 (en) 1982-12-17

Family

ID=13124943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5984575A Granted JPS51135590A (en) 1975-05-20 1975-05-20 Surface defect detection method and its equipment

Country Status (1)

Country Link
JP (1) JPS51135590A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012110910A (en) * 2010-11-22 2012-06-14 Toyota Motor Corp Casting inspection method
JP2013036850A (en) * 2011-08-08 2013-02-21 Midori Seimitsu:Kk Method and device for inspecting surface flaw of hot steel material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63177639U (en) * 1987-05-01 1988-11-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123389A (en) * 1973-03-29 1974-11-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123389A (en) * 1973-03-29 1974-11-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012110910A (en) * 2010-11-22 2012-06-14 Toyota Motor Corp Casting inspection method
JP2013036850A (en) * 2011-08-08 2013-02-21 Midori Seimitsu:Kk Method and device for inspecting surface flaw of hot steel material

Also Published As

Publication number Publication date
JPS5759933B2 (en) 1982-12-17

Similar Documents

Publication Publication Date Title
JPS5421129A (en) Flaw detection method by square difference system for length of circumference
JPS54114264A (en) Screw inspection method
JPS51135590A (en) Surface defect detection method and its equipment
JPS5225575A (en) Inspection method of the state of object
JPS5249856A (en) Display device for surface of steel
JPS51114981A (en) Steel surface scar detecting method and equipment
JPS51135587A (en) Surface defect detection method and equipment
JPS52134487A (en) Facial scratch detection means for steel and iron material
JPS5421790A (en) Sealing defect detector of canned products
JPS5223985A (en) Method of detecting flaws of springs
JPS51138467A (en) Method of detecting surface configuration of luminous member by contour line fringe and fabrication thereof
JPS51147378A (en) Flaw detecting method of steel pieces
JPS5232387A (en) Method of detecting defects of weld zones of steel pipes
JPS5398871A (en) Shape inspecting apparatus
JPS52100281A (en) Surface flaw detecting method for hot slabs
JPS51126322A (en) Process for producing copper alloy without surface defect
JPS53146698A (en) Printed matter inspecting apparatus
JPS51135591A (en) Surface defect detection method and equipment
JPS5267688A (en) Ultrasonic flaw detector
JPS51134651A (en) Detection method of the thickness of asphalt pavement
JPS5222479A (en) Method of inspecting masks
JPS5337489A (en) Inspecting apparatus by ultrasonic wave
JPS53120552A (en) Evaluation method of plating surface
JPS5554435A (en) Automatic gate setting method of ultrasoic inspector by computer
JPS52144960A (en) Inspecting method of semiconductor wafers