GB877654A - Non-directional oriented silicon-iron - Google Patents

Non-directional oriented silicon-iron

Info

Publication number
GB877654A
GB877654A GB1780359A GB1780359A GB877654A GB 877654 A GB877654 A GB 877654A GB 1780359 A GB1780359 A GB 1780359A GB 1780359 A GB1780359 A GB 1780359A GB 877654 A GB877654 A GB 877654A
Authority
GB
United Kingdom
Prior art keywords
stock
annealing
grain
permeabilities
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
GB1780359A
Inventor
John Martin Jackson
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 International Corp
Original Assignee
Armco International 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 Armco International Corp filed Critical Armco International Corp
Priority to GB1780359A priority Critical patent/GB877654A/en
Priority to FR796417A priority patent/FR1226241A/en
Publication of GB877654A publication Critical patent/GB877654A/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
    • C21D8/1272—Final recrystallisation annealing

Landscapes

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

Abstract

877,654. Making magnetic sheets; altering physical properties. ARMCO INTERNATIONAL CORPORATION. May 25,1959, No. 17803/59. Drawings to Specification. Classes 83 (2) and 83 (4) A process of producing high permeability non- directional silicon-iron sheet stock containing from 2.0% to 3.5% silicon, comprises producing a stock in which the crystals are oriented with a (100) plane parallel to the surface of the stock, the cube edges being randomly oriented in the plane of the stock, subjecting said stock to a cold reduction of 55% to 85% and annealing said stock at a temperature of 1400‹ F. to 2200‹ F. in a non-carburizing reducing atmosphere. In an example the initial stock is formed by casting the silicon iron alloy between parallel cooling surfaces having a width and length many times the distance of separation of the surfaces and the cast material is hot rolled before the cold rolling operation. If the initial stock has been cast to size and requires no hot rolling it is annealed before being cold rolled. Where a low carbon content is desired, e.g. 0.007% or less, decarburization may be practised in conjunction with the annealing treatment which may be box annealing or open annealing. The example exhibited . straight grain permeabilities at H M = 10 oersteds of 1550, cross grain permeabilities of 1520 and intermediate permeabilities in directions lying between the straight grain and the cross-grain.
GB1780359A 1959-05-25 1959-05-25 Non-directional oriented silicon-iron Expired GB877654A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1780359A GB877654A (en) 1959-05-25 1959-05-25 Non-directional oriented silicon-iron
FR796417A FR1226241A (en) 1959-05-25 1959-06-03 Process for obtaining ferro-silicon sheets and products thus obtained

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1780359A GB877654A (en) 1959-05-25 1959-05-25 Non-directional oriented silicon-iron

Publications (1)

Publication Number Publication Date
GB877654A true GB877654A (en) 1961-09-20

Family

ID=10101495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1780359A Expired GB877654A (en) 1959-05-25 1959-05-25 Non-directional oriented silicon-iron

Country Status (1)

Country Link
GB (1) GB877654A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084569A4 (en) * 1981-08-05 1983-08-01 Nippon Steel Corp Process for manufacturing isotropic electromagnetic steel plate having excellent magnetic characteristics.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084569A4 (en) * 1981-08-05 1983-08-01 Nippon Steel Corp Process for manufacturing isotropic electromagnetic steel plate having excellent magnetic characteristics.
EP0084569A1 (en) * 1981-08-05 1983-08-03 Nippon Steel Corporation Process for manufacturing isotropic electromagnetic steel plate having excellent magnetic characteristics

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