FR2176698A1 - Levelling silicon steel sheet - during stress relieving after box annealing - Google Patents

Levelling silicon steel sheet - during stress relieving after box annealing

Info

Publication number
FR2176698A1
FR2176698A1 FR7306679A FR7306679A FR2176698A1 FR 2176698 A1 FR2176698 A1 FR 2176698A1 FR 7306679 A FR7306679 A FR 7306679A FR 7306679 A FR7306679 A FR 7306679A FR 2176698 A1 FR2176698 A1 FR 2176698A1
Authority
FR
France
Prior art keywords
degrees
steel sheet
silicon steel
annealing
levelling
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.)
Withdrawn
Application number
FR7306679A
Other languages
French (fr)
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of FR2176698A1 publication Critical patent/FR2176698A1/en
Withdrawn legal-status Critical Current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
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/125—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with application of tension
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1272—Final recrystallisation annealing

Abstract

Box annealed coils of grain oriented silicon steel sheet are stress relieved by annealing at 704-1093 (704-982) degrees C in a non-oxidising and non-carburising atmosphere, after being stretched to 1% extension, and then cooled to 538 degrees C before exposure to air. Pref. the process is continuous and comprises heating to 816-982 degrees C and stretching, annealing at 704-816 degrees C, and then cooling. The process removes edge damage, produced by box annealing, to give a flat sheet without loss of magnetic properties.
FR7306679A 1972-03-20 1973-02-26 Levelling silicon steel sheet - during stress relieving after box annealing Withdrawn FR2176698A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23624072A 1972-03-20 1972-03-20

Publications (1)

Publication Number Publication Date
FR2176698A1 true FR2176698A1 (en) 1973-11-02

Family

ID=22888690

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7306679A Withdrawn FR2176698A1 (en) 1972-03-20 1973-02-26 Levelling silicon steel sheet - during stress relieving after box annealing

Country Status (5)

Country Link
JP (1) JPS495820A (en)
DE (1) DE2312253A1 (en)
FR (1) FR2176698A1 (en)
IT (1) IT977891B (en)
RO (1) RO62620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
WO2016067214A1 (en) * 2014-10-29 2016-05-06 Fives Stein Method for orienting steel sheet grains, corresponding device, and facility implementing said method or device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015098221A1 (en) 2013-12-25 2015-07-02 住友理工株式会社 Power generation system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0432732A2 (en) * 1989-12-11 1991-06-19 Armco Inc. Thermal flattening semi-processed electrical steel
EP0432732A3 (en) * 1989-12-11 1994-06-22 Armco Inc Thermal flattening semi-processed electrical steel
WO2016067214A1 (en) * 2014-10-29 2016-05-06 Fives Stein Method for orienting steel sheet grains, corresponding device, and facility implementing said method or device
CN107109510A (en) * 2014-10-29 2017-08-29 法孚斯坦因公司 Method for alignment, related device and the implementation methods described or the equipment of device of steel plate crystal grain
US11028459B2 (en) 2014-10-29 2021-06-08 Fives Stein Method for orienting steel sheet grains, corresponding device, and facility implementing said method or device

Also Published As

Publication number Publication date
RO62620A (en) 1978-05-15
DE2312253A1 (en) 1973-10-04
JPS495820A (en) 1974-01-19
IT977891B (en) 1974-09-20

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Legal Events

Date Code Title Description
ST Notification of lapse