DK0995507T3 - Apparatus for non-destructive testing of especially hot rod-shaped rolling stock - Google Patents

Apparatus for non-destructive testing of especially hot rod-shaped rolling stock

Info

Publication number
DK0995507T3
DK0995507T3 DK99109511T DK99109511T DK0995507T3 DK 0995507 T3 DK0995507 T3 DK 0995507T3 DK 99109511 T DK99109511 T DK 99109511T DK 99109511 T DK99109511 T DK 99109511T DK 0995507 T3 DK0995507 T3 DK 0995507T3
Authority
DK
Denmark
Prior art keywords
rolling stock
destructive testing
coil system
shaped rolling
test coil
Prior art date
Application number
DK99109511T
Other languages
Danish (da)
Inventor
Scharlemann Horst
Original Assignee
Georgsmarienhuette Gmbh
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 DE19850055A external-priority patent/DE19850055C1/en
Application filed by Georgsmarienhuette Gmbh filed Critical Georgsmarienhuette Gmbh
Application granted granted Critical
Publication of DK0995507T3 publication Critical patent/DK0995507T3/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning
    • G01N27/9026—Arrangements for scanning by moving the material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

The test coil system (19) is rotatably configured so that rolling material (11) may be revolved. Between rolling material and test coil system, shielded cooling medium layer (5) and shield apparatuses (2,3) whose electric conductivity is zero, are provided. When defect such as crack, hole exist in rolling material, propagation interference of eddy current is excited and defective signal is produced by test coil system based on the propagation interference. Based on the defect signal recorded, the defects in material are evaluated.
DK99109511T 1998-09-03 1999-05-12 Apparatus for non-destructive testing of especially hot rod-shaped rolling stock DK0995507T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19840187 1998-09-03
DE19850055A DE19850055C1 (en) 1998-09-03 1998-10-30 Device for the non-destructive testing of especially hot rod-shaped rolled material

Publications (1)

Publication Number Publication Date
DK0995507T3 true DK0995507T3 (en) 2004-10-04

Family

ID=26048596

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99109511T DK0995507T3 (en) 1998-09-03 1999-05-12 Apparatus for non-destructive testing of especially hot rod-shaped rolling stock

Country Status (6)

Country Link
EP (1) EP0995507B1 (en)
JP (1) JP2000088814A (en)
AT (1) ATE270592T1 (en)
DK (1) DK0995507T3 (en)
ES (1) ES2223151T3 (en)
PT (1) PT995507E (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5065614B2 (en) * 2006-04-14 2012-11-07 株式会社アルバック Eddy current film thickness meter
ITUD20060271A1 (en) * 2006-12-21 2008-06-22 Danieli Automation Spa DEVICE FOR DETECTION OF SURFACE DEFECTS OF A LAMINATED PRODUCT IN A LAMINATION EQUIPMENT AND ITS PROCEDURE
CN109675927B (en) * 2018-12-11 2021-04-13 西安诺博尔稀贵金属材料股份有限公司 Preparation method of 410 stainless steel strip for nuclear power

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024470A (en) * 1974-05-20 1977-05-17 Republic Steel Corporation Eddy current detector for hot test pieces having coolant fluid and purge features
JPS5940265B2 (en) * 1978-02-13 1984-09-28 日本鋼管株式会社 Thermal billet eddy current flaw detection equipment
JPS5866050A (en) * 1981-10-15 1983-04-20 Shimadzu Corp Hot-detecting device for flaw
US4673879A (en) * 1984-06-27 1987-06-16 Rupublic Steel Corporation Eddy current flaw detector having rotatable field defining sleeve for selectively enhancing induced eddy currents in a workpiece
SE456534B (en) * 1985-11-25 1988-10-10 Bengt Hjalmar Tornblom DEVICE FOR SEATING AND / OR CONTROL OF PROVOBJECT WITH AN OSCILLATING SENSOR
DE19719980C1 (en) * 1997-05-13 1998-11-12 Georgsmarienhuette Gmbh Device for the non-destructive testing of hot rolled material, in particular steel bars

Also Published As

Publication number Publication date
EP0995507B1 (en) 2004-07-07
ES2223151T3 (en) 2005-02-16
EP0995507A2 (en) 2000-04-26
EP0995507A3 (en) 2001-10-24
ATE270592T1 (en) 2004-07-15
JP2000088814A (en) 2000-03-31
PT995507E (en) 2004-10-29

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