GB1425992A - Alloys suitable for use as transformer core materials and processes for their preparation - Google Patents

Alloys suitable for use as transformer core materials and processes for their preparation

Info

Publication number
GB1425992A
GB1425992A GB623173A GB623173A GB1425992A GB 1425992 A GB1425992 A GB 1425992A GB 623173 A GB623173 A GB 623173A GB 623173 A GB623173 A GB 623173A GB 1425992 A GB1425992 A GB 1425992A
Authority
GB
United Kingdom
Prior art keywords
texture
stages
alloy
last
reduction
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
GB623173A
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.)
CBS Corp
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1425992A publication Critical patent/GB1425992A/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
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • 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
    • C21D8/1222—Hot 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
    • C21D8/1216—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
    • C21D8/1227—Warm 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
    • C21D8/1216—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

1425992 Magnetic Fe-Co alloy WESTING- HOUSE ELECTRIC CORP 8 Feb 1973 [22 Feb 1972] 6231/73 Heading C7A Alloy for use in a transformer core consists of:- the balance, apart from incidental impurities, being Fe. The alloy may be hot worked at 1000-1100‹C, cold worked in two or more stages with intermediate anneal(s) at 800‹C up to the Ac 1 temperature of the composition, the last cold working stage effecting a reduction in crosssectional area of 50-75% and finally annealed in the same temperature range (e.g. in a reducing atmosphere with a dew point less than -40‹C for 24-48 hours) to give a (110)[001] texture, a primary recrystallized microstructure and normal grain growth. For the production of a (100)[001] texture the cold working is effected in one or more stages at least the last effecting a reduction in cross section of over 75% the other details being as above. When a (110)[001] texture with a secondary recrystallized microstructure is desired the cast melt is hot worked between 1250‹C and the highest temperature that does not cause burning, cold working in two or more stages at least the last of which cause a cross-section reduction of 50-75% and with intermediate annealing as above, then decarburizing annealing at 760‹-870‹C in hydrogen with a dew point over +4‹C and finally box annealing at 1100‹-1300‹C.
GB623173A 1972-02-22 1973-02-08 Alloys suitable for use as transformer core materials and processes for their preparation Expired GB1425992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22832072A 1972-02-22 1972-02-22

Publications (1)

Publication Number Publication Date
GB1425992A true GB1425992A (en) 1976-02-25

Family

ID=22856694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB623173A Expired GB1425992A (en) 1972-02-22 1973-02-08 Alloys suitable for use as transformer core materials and processes for their preparation

Country Status (7)

Country Link
JP (1) JPS4897721A (en)
BE (1) BE795765A (en)
CA (1) CA1027393A (en)
DE (1) DE2307862A1 (en)
FR (1) FR2173191B1 (en)
GB (1) GB1425992A (en)
IT (1) IT984807B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130022833A1 (en) * 2011-07-22 2013-01-24 GM Global Technology Operations LLC Electromagnetic machine and system including silicon steel sheets

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424327A (en) * 1933-10-12 1935-02-19 Krupp Ag Improvements in dynamo and transformer laminations and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130022833A1 (en) * 2011-07-22 2013-01-24 GM Global Technology Operations LLC Electromagnetic machine and system including silicon steel sheets

Also Published As

Publication number Publication date
DE2307862A1 (en) 1973-09-06
CA1027393A (en) 1978-03-07
JPS4897721A (en) 1973-12-12
FR2173191A1 (en) 1973-10-05
BE795765A (en) 1973-08-22
FR2173191B1 (en) 1976-11-05
IT984807B (en) 1974-11-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee