JPS57101621A - Hardening apparatus for steel plate - Google Patents

Hardening apparatus for steel plate

Info

Publication number
JPS57101621A
JPS57101621A JP17675280A JP17675280A JPS57101621A JP S57101621 A JPS57101621 A JP S57101621A JP 17675280 A JP17675280 A JP 17675280A JP 17675280 A JP17675280 A JP 17675280A JP S57101621 A JPS57101621 A JP S57101621A
Authority
JP
Japan
Prior art keywords
steel plate
magnetic field
hardening
steel
steel plates
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
JP17675280A
Other languages
Japanese (ja)
Other versions
JPS63492B2 (en
Inventor
Osamu Takeuchi
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP17675280A priority Critical patent/JPS57101621A/en
Publication of JPS57101621A publication Critical patent/JPS57101621A/en
Publication of JPS63492B2 publication Critical patent/JPS63492B2/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields

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)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To raise the hardening efficiency of steel plates by generating DC magnetic field in the steel plates in such a way that martensite transformation can be quickly and uniformly caused in the hardening treatment of the steel plates. CONSTITUTION:While feeding a steel plate 2 heated to a given high temperature in the direction of arrow, cooling water is jetted at the steel plate 2 from an inlet spray nozzle 3a and plural spray nozzles 3 for hardening. In this case, plural magnetic field generators 4 are provided in the feeding path of the steel plate and voltage from a DC power source 7 is applied to the steel plate to form a DC magnetic field. By the magnetic field, the magnetic dipole of the steel plate 2 is directed in aligned manner, crystal lattice is homogenized, and martensite transformation occurs quickly and uniformly, whereby raising the hardening efficiency of the steed plate 2 as well as its mechanical strength. Finally, residual magnetic field in the steel plate 2 is eliminated by passing it through a magnetic erasing coil 8 to which AC current is applied.
JP17675280A 1980-12-15 1980-12-15 Hardening apparatus for steel plate Granted JPS57101621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17675280A JPS57101621A (en) 1980-12-15 1980-12-15 Hardening apparatus for steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17675280A JPS57101621A (en) 1980-12-15 1980-12-15 Hardening apparatus for steel plate

Publications (2)

Publication Number Publication Date
JPS57101621A true JPS57101621A (en) 1982-06-24
JPS63492B2 JPS63492B2 (en) 1988-01-07

Family

ID=16019180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17675280A Granted JPS57101621A (en) 1980-12-15 1980-12-15 Hardening apparatus for steel plate

Country Status (1)

Country Link
JP (1) JPS57101621A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55106662A (en) * 1978-06-14 1980-08-15 Voest Ag Continuous casting mold suitable for setting strand cross section mold of every kind and method of varying strand cross section mold in continuous casting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55106662A (en) * 1978-06-14 1980-08-15 Voest Ag Continuous casting mold suitable for setting strand cross section mold of every kind and method of varying strand cross section mold in continuous casting

Also Published As

Publication number Publication date
JPS63492B2 (en) 1988-01-07

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