FR1351012A - Method and apparatus for detecting surface defects - Google Patents

Method and apparatus for detecting surface defects

Info

Publication number
FR1351012A
FR1351012A FR925552A FR925552A FR1351012A FR 1351012 A FR1351012 A FR 1351012A FR 925552 A FR925552 A FR 925552A FR 925552 A FR925552 A FR 925552A FR 1351012 A FR1351012 A FR 1351012A
Authority
FR
France
Prior art keywords
surface defects
detecting surface
detecting
defects
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
FR925552A
Other languages
French (fr)
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.)
United States Steel Corp
Original Assignee
United States 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
Priority claimed from US174943A external-priority patent/US3229513A/en
Application filed by United States Steel Corp filed Critical United States Steel Corp
Priority to FR925552A priority Critical patent/FR1351012A/en
Application granted granted Critical
Publication of FR1351012A publication Critical patent/FR1351012A/en
Expired 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
FR925552A 1962-02-23 1963-02-21 Method and apparatus for detecting surface defects Expired FR1351012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR925552A FR1351012A (en) 1962-02-23 1963-02-21 Method and apparatus for detecting surface defects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US174943A US3229513A (en) 1962-02-23 1962-02-23 Method for detecting defects on surfaces
FR925552A FR1351012A (en) 1962-02-23 1963-02-21 Method and apparatus for detecting surface defects

Publications (1)

Publication Number Publication Date
FR1351012A true FR1351012A (en) 1964-01-31

Family

ID=26199922

Family Applications (1)

Application Number Title Priority Date Filing Date
FR925552A Expired FR1351012A (en) 1962-02-23 1963-02-21 Method and apparatus for detecting surface defects

Country Status (1)

Country Link
FR (1) FR1351012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2328523A1 (en) * 1975-10-20 1977-05-20 Centro Maskin Goteborg Ab METHOD AND DEVICE FOR MARKING CRACKS IN STEEL BLANKETS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2328523A1 (en) * 1975-10-20 1977-05-20 Centro Maskin Goteborg Ab METHOD AND DEVICE FOR MARKING CRACKS IN STEEL BLANKETS

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