FR2383235A1 - Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades - Google Patents

Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades

Info

Publication number
FR2383235A1
FR2383235A1 FR7707058A FR7707058A FR2383235A1 FR 2383235 A1 FR2383235 A1 FR 2383235A1 FR 7707058 A FR7707058 A FR 7707058A FR 7707058 A FR7707058 A FR 7707058A FR 2383235 A1 FR2383235 A1 FR 2383235A1
Authority
FR
France
Prior art keywords
strip
spray
tempering
esp
inductor
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
FR7707058A
Other languages
French (fr)
Other versions
FR2383235B1 (en
Inventor
Herbert Tschop
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.)
ELPHIAC AB
Original Assignee
ELPHIAC AB
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 ELPHIAC AB filed Critical ELPHIAC AB
Priority to FR7707058A priority Critical patent/FR2383235A1/en
Publication of FR2383235A1 publication Critical patent/FR2383235A1/en
Application granted granted Critical
Publication of FR2383235B1 publication Critical patent/FR2383235B1/fr
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
    • C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw blades
    • 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
    • C21D9/60—Continuous furnaces for strip or wire with induction heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

Plant for the heat treatment of steel strip, which is driven from a feeder or uncoiler through an inductor supplied by a high-frequency (h.f.) generator to heat the strip above the Curie point. The inductor is directly followed by a quenching spray to obtain max. strip hardness. The spray is followed by a second inductor fed by an h.f. generator for tempering the strip below the Curie point; and the strip is then cooled in air, and fed to a coiling spool. After cooling to 200 degrees C subsequent to the tempering operation, a second spray may be used to cool the strip to ambient temp. The plant is esp. used for heat treating saw blade strip, in which case the second spray is followed by a third inductor and a spray for hardening the saw teeth. Used e.g. for heat treating saw blade strip at 8 metres/minute, using h.f. generators of 10-30 kW output.
FR7707058A 1977-03-10 1977-03-10 Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades Granted FR2383235A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7707058A FR2383235A1 (en) 1977-03-10 1977-03-10 Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7707058A FR2383235A1 (en) 1977-03-10 1977-03-10 Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades

Publications (2)

Publication Number Publication Date
FR2383235A1 true FR2383235A1 (en) 1978-10-06
FR2383235B1 FR2383235B1 (en) 1980-08-01

Family

ID=9187867

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707058A Granted FR2383235A1 (en) 1977-03-10 1977-03-10 Continuous induction hardening and tempering of steel strip - via row of inductors and quenching sprays, esp. to mfr. saw blades

Country Status (1)

Country Link
FR (1) FR2383235A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038346A1 (en) * 1997-02-26 1998-09-03 The L.S. Starrett Company Method and installation for tempering metallic strips
GB2336851A (en) * 1997-02-26 1999-11-03 Ls Starrett Company The Method and installation for tempering metallic strips
GB2434763A (en) * 2005-07-08 2007-08-08 Stanley Works Induction hardened blade
CN102676791A (en) * 2012-05-16 2012-09-19 冯伟年 Steel wire induction heating treatment device and method, tire steel cord and silicon chip cutting wire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038346A1 (en) * 1997-02-26 1998-09-03 The L.S. Starrett Company Method and installation for tempering metallic strips
GB2336851A (en) * 1997-02-26 1999-11-03 Ls Starrett Company The Method and installation for tempering metallic strips
GB2434763A (en) * 2005-07-08 2007-08-08 Stanley Works Induction hardened blade
GB2434763B (en) * 2005-07-08 2011-07-06 Stanley Works Induction hardened blade
US8316550B2 (en) 2005-07-08 2012-11-27 Stanley Black & Decker, Inc. Induction hardened blade
US8322253B2 (en) 2005-07-08 2012-12-04 Stanley Black & Decker, Inc. Method of manufacturing a utility knife blade having an induction hardened cutting edge
US8448544B2 (en) 2005-07-08 2013-05-28 Stanley Black & Decker, Inc. Induction hardened blade
CN102676791A (en) * 2012-05-16 2012-09-19 冯伟年 Steel wire induction heating treatment device and method, tire steel cord and silicon chip cutting wire

Also Published As

Publication number Publication date
FR2383235B1 (en) 1980-08-01

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Legal Events

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