JPS5641330A - Manufacture of ferromagnetic, long continuous material having uniform reluctivity - Google Patents

Manufacture of ferromagnetic, long continuous material having uniform reluctivity

Info

Publication number
JPS5641330A
JPS5641330A JP11689279A JP11689279A JPS5641330A JP S5641330 A JPS5641330 A JP S5641330A JP 11689279 A JP11689279 A JP 11689279A JP 11689279 A JP11689279 A JP 11689279A JP S5641330 A JPS5641330 A JP S5641330A
Authority
JP
Japan
Prior art keywords
heat treatment
rhoalpha
reluctivity
wire rod
measured
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
JP11689279A
Other languages
Japanese (ja)
Other versions
JPS624453B2 (en
Inventor
Osamu Myoga
Hitoshi Igarashi
Atsushi Kawai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11689279A priority Critical patent/JPS5641330A/en
Publication of JPS5641330A publication Critical patent/JPS5641330A/en
Publication of JPS624453B2 publication Critical patent/JPS624453B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To manufacture ferromagnetic, long continuous material having uniform reluctivity over sufficient length, by measuring continuously the reluctivity of a ferromagnetic, long continuous material before and after heat treatment, and by controlling the heat treatment temp. so that these reluctivity values may attain desired values. CONSTITUTION:The reluctivity (rhoalpha) of long wire rod 1, made of e.g. semihard magnetic material, before and after the heat treatment 2 is measured continuously, and the heat treatment temp. is controlled with rhoalpha obtained before and after the heat treatment. That is, electric current for measurement is applied from a mercury cell 15 through a rotary electrode pairs 5, 6 to the wire rod 1, and the electric current for measurement is detected by measuring the voltage drop of a standard resistance 13 correctly. Under the conditions, the voltage drop due to the wire rod is measured with rotary electrode pairs 9, 10, and said detected value and said measured value are digitized through detecting amplifiers 20, 18 by an AD converter 22 and are fed to a minicomputer 24. Subsequently, an electric current is applied from a pulse oscillator 17 to the coil 3 to generate a magnetic field, and said both voltages at that time are detected thereby determining rhoalpha with these values. The rhoalpha after heat treatment is measured in the same manner, and the rhoalpha allows to control the rhoalpha of the wire rod 1 after heat treatment 2.
JP11689279A 1979-09-12 1979-09-12 Manufacture of ferromagnetic, long continuous material having uniform reluctivity Granted JPS5641330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11689279A JPS5641330A (en) 1979-09-12 1979-09-12 Manufacture of ferromagnetic, long continuous material having uniform reluctivity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11689279A JPS5641330A (en) 1979-09-12 1979-09-12 Manufacture of ferromagnetic, long continuous material having uniform reluctivity

Publications (2)

Publication Number Publication Date
JPS5641330A true JPS5641330A (en) 1981-04-18
JPS624453B2 JPS624453B2 (en) 1987-01-30

Family

ID=14698211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11689279A Granted JPS5641330A (en) 1979-09-12 1979-09-12 Manufacture of ferromagnetic, long continuous material having uniform reluctivity

Country Status (1)

Country Link
JP (1) JPS5641330A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196221A (en) * 1984-03-15 1985-10-04 Kusakabe Denki Kk Apparatus for continuous production of steel pipe
JPH0687518U (en) * 1993-02-09 1994-12-22 鹿島建設株式会社 Synthetic slab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196221A (en) * 1984-03-15 1985-10-04 Kusakabe Denki Kk Apparatus for continuous production of steel pipe
JPH0687518U (en) * 1993-02-09 1994-12-22 鹿島建設株式会社 Synthetic slab

Also Published As

Publication number Publication date
JPS624453B2 (en) 1987-01-30

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