GB940811A - Oriented silicon-iron and process of making it - Google Patents

Oriented silicon-iron and process of making it

Info

Publication number
GB940811A
GB940811A GB3747059A GB3747059A GB940811A GB 940811 A GB940811 A GB 940811A GB 3747059 A GB3747059 A GB 3747059A GB 3747059 A GB3747059 A GB 3747059A GB 940811 A GB940811 A GB 940811A
Authority
GB
United Kingdom
Prior art keywords
iron
making
recrystallizing
cold rolling
oriented silicon
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.)
Expired
Application number
GB3747059A
Inventor
Martin Frederick Littman
Dale Martin Kohler
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.)
Armco Inc
Original Assignee
Armco 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 Armco Inc filed Critical Armco Inc
Priority to GB3747059A priority Critical patent/GB940811A/en
Publication of GB940811A publication Critical patent/GB940811A/en
Expired 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
    • 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
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1233—Cold rolling
    • 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
    • C21D8/1266—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 between cold rolling steps
    • 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

Silicon iron of (100) [001] orientation is produced by starting with (110) [001] strip containing 2.5-4.0% silicon, cold rolling to reduce by 55-90%, recrystallizing at 1200-2200 DEG F., cold rolling with a reduction of 50-80%, and recrystallizing at 1900-2300 DEG F. Strand annealing may be performed for the first recrystallization but box annealing is preferred. The secondary recrystallization is a box anneal using a protective atmosphere of hydrogen, helium, or argon containing a very small amount of a highly polar compound such as hydrogen sulphide, sulphur dioxide, an oxide of carbon, or a mixture of these. Specifications 527,525, 558,370, 558,558, 713,034, 807,498, 807,809 and U.S.A. Specification 2,287,466 are referred to.
GB3747059A 1959-11-04 1959-11-04 Oriented silicon-iron and process of making it Expired GB940811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3747059A GB940811A (en) 1959-11-04 1959-11-04 Oriented silicon-iron and process of making it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3747059A GB940811A (en) 1959-11-04 1959-11-04 Oriented silicon-iron and process of making it

Publications (1)

Publication Number Publication Date
GB940811A true GB940811A (en) 1963-11-06

Family

ID=10396726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3747059A Expired GB940811A (en) 1959-11-04 1959-11-04 Oriented silicon-iron and process of making it

Country Status (1)

Country Link
GB (1) GB940811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762575A (en) * 1985-06-26 1988-08-09 Nisshin Steel Co., Ltd. Process for producing electrical steel sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762575A (en) * 1985-06-26 1988-08-09 Nisshin Steel Co., Ltd. Process for producing electrical steel sheet

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