JPS51133074A - Method for detecting inner defects of steel materials - Google Patents

Method for detecting inner defects of steel materials

Info

Publication number
JPS51133074A
JPS51133074A JP50057127A JP5712775A JPS51133074A JP S51133074 A JPS51133074 A JP S51133074A JP 50057127 A JP50057127 A JP 50057127A JP 5712775 A JP5712775 A JP 5712775A JP S51133074 A JPS51133074 A JP S51133074A
Authority
JP
Japan
Prior art keywords
steel materials
detecting inner
inner defects
defects
detecting
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
JP50057127A
Other languages
Japanese (ja)
Other versions
JPS5619583B2 (en
Inventor
Yoshitaka Hori
Motoo Nagasawa
Hiroyoshi Matsuo
Takeo Inayabu
Hideyuki Misumi
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 JP50057127A priority Critical patent/JPS51133074A/en
Priority to BR7506031A priority patent/BR7506031A/en
Priority to IT2734375A priority patent/IT1042631B/en
Publication of JPS51133074A publication Critical patent/JPS51133074A/en
Publication of JPS5619583B2 publication Critical patent/JPS5619583B2/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
    • G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink

Landscapes

  • 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)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

PURPOSE:It is a purpose of the invention to realize clear and fast detection of the sulfur band split, alumina-cluster and other defects seen on the detected surface of steel materials by simple structure.
JP50057127A 1974-09-18 1975-05-14 Method for detecting inner defects of steel materials Granted JPS51133074A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50057127A JPS51133074A (en) 1975-05-14 1975-05-14 Method for detecting inner defects of steel materials
BR7506031A BR7506031A (en) 1974-09-18 1975-09-18 PROCESS TO DETECT INTERNAL DEFECTS AND STEEL MATERIALS, AND APPLIANCE FOR THE SAME
IT2734375A IT1042631B (en) 1974-09-18 1975-09-18 Steel articles internal defects detection - after exposed surface treatment with citric and sulphuric acids and ammonium persulphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50057127A JPS51133074A (en) 1975-05-14 1975-05-14 Method for detecting inner defects of steel materials

Publications (2)

Publication Number Publication Date
JPS51133074A true JPS51133074A (en) 1976-11-18
JPS5619583B2 JPS5619583B2 (en) 1981-05-08

Family

ID=13046888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50057127A Granted JPS51133074A (en) 1974-09-18 1975-05-14 Method for detecting inner defects of steel materials

Country Status (1)

Country Link
JP (1) JPS51133074A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225353A (en) * 1982-06-24 1983-12-27 Nippon Kokan Kk <Nkk> Method for rapidly inspecting central segregation of continuously cast material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621479A1 (en) * 1986-06-26 1988-01-07 Vepa Ag Compression-chamber crimping appliance for the crimping of synthetic thread groups

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225353A (en) * 1982-06-24 1983-12-27 Nippon Kokan Kk <Nkk> Method for rapidly inspecting central segregation of continuously cast material
JPH0116384B2 (en) * 1982-06-24 1989-03-24 Nippon Kokan Kk

Also Published As

Publication number Publication date
JPS5619583B2 (en) 1981-05-08

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