JPS57141542A - Detection apparatus for flaw of metallic body surface by induction heating method - Google Patents

Detection apparatus for flaw of metallic body surface by induction heating method

Info

Publication number
JPS57141542A
JPS57141542A JP20608381A JP20608381A JPS57141542A JP S57141542 A JPS57141542 A JP S57141542A JP 20608381 A JP20608381 A JP 20608381A JP 20608381 A JP20608381 A JP 20608381A JP S57141542 A JPS57141542 A JP S57141542A
Authority
JP
Japan
Prior art keywords
temperature
slab
detection apparatus
turning
heating
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
JP20608381A
Other languages
Japanese (ja)
Other versions
JPS6359102B2 (en
Inventor
Haruyuki Suganuma
Keiichi Onishi
Akira Tamori
Masaru Fukuyama
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.)
KOUSHIYUUHA NETSUREN KK
Neturen Co Ltd
Koshuha Netsuren KK
Nippon Steel Corp
Original Assignee
KOUSHIYUUHA NETSUREN KK
Neturen Co Ltd
Koshuha Netsuren KK
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 KOUSHIYUUHA NETSUREN KK, Neturen Co Ltd, Koshuha Netsuren KK, Nippon Steel Corp filed Critical KOUSHIYUUHA NETSUREN KK
Priority to JP20608381A priority Critical patent/JPS57141542A/en
Publication of JPS57141542A publication Critical patent/JPS57141542A/en
Publication of JPS6359102B2 publication Critical patent/JPS6359102B2/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
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws

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 Or Analyzing Materials Using Thermal Means (AREA)

Abstract

PURPOSE:To miniaturize a detection apparatus and to decrease the consumption of electric power and also, to improve the detection efficiency, by locally heating the surface of a metallic body continuously by an induction heating method and scanning a temperature of a part to be heated and then, detecting a flaw on the surface by measuring an unusual temperature. CONSTITUTION:A slab 1 is heated by a heating conductive body 32 surrounded by a magnetic body and turning on the whole electric current at a sending process of the slab 1, after the surface of the slab 1 is preheated by a heating conductive body 33 turning on a split electric current. In this manner, a temperature is raised suddenly in a narrow range and it reaches the highest temperature in the vicinity of a line P immediately after passing through the body 32. A heating conductive body 31 turning on the slit current is backed up said high temperature condition. Accordingly, an angle of inclination is set so that an extension line of a notched inclining face 41 of the body 4 is brought to the point P and the temperature on the line P is scanned continuously by using a temperature measuring instrument 11 accompanied by a movement of the slab 1 and then, flaws are detected by measuring an unusual rise in temperature. In this manner, miniaturization of a detection apparatus and economy in consumption of electricity are achieved and detection efficiency is improved.
JP20608381A 1981-12-22 1981-12-22 Detection apparatus for flaw of metallic body surface by induction heating method Granted JPS57141542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20608381A JPS57141542A (en) 1981-12-22 1981-12-22 Detection apparatus for flaw of metallic body surface by induction heating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20608381A JPS57141542A (en) 1981-12-22 1981-12-22 Detection apparatus for flaw of metallic body surface by induction heating method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3434876A Division JPS52154686A (en) 1976-03-31 1976-03-31 Method of and apparatus for detecting surface flaw of metallic object by using induction heating

Publications (2)

Publication Number Publication Date
JPS57141542A true JPS57141542A (en) 1982-09-01
JPS6359102B2 JPS6359102B2 (en) 1988-11-17

Family

ID=16517535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20608381A Granted JPS57141542A (en) 1981-12-22 1981-12-22 Detection apparatus for flaw of metallic body surface by induction heating method

Country Status (1)

Country Link
JP (1) JPS57141542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105993055A (en) * 2014-02-06 2016-10-05 西门子公司 Inductor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281801A (en) * 1988-09-17 1990-03-22 Marushiyou Kasei Kk Bag made of synthetic resin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105993055A (en) * 2014-02-06 2016-10-05 西门子公司 Inductor
JP2017507487A (en) * 2014-02-06 2017-03-16 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ Inductor
US10217560B2 (en) 2014-02-06 2019-02-26 Siemens Aktiengesellschaft Inductor

Also Published As

Publication number Publication date
JPS6359102B2 (en) 1988-11-17

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