GB1478740A - Processing for high permeability silicon steel - Google Patents

Processing for high permeability silicon steel

Info

Publication number
GB1478740A
GB1478740A GB38766/75A GB3876675A GB1478740A GB 1478740 A GB1478740 A GB 1478740A GB 38766/75 A GB38766/75 A GB 38766/75A GB 3876675 A GB3876675 A GB 3876675A GB 1478740 A GB1478740 A GB 1478740A
Authority
GB
United Kingdom
Prior art keywords
silicon steel
quenching
carried out
range
temperature
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
GB38766/75A
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.)
Sunbeam Oster Co Inc
Original Assignee
Allegheny Ludlum Industries 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 Allegheny Ludlum Industries Inc filed Critical Allegheny Ludlum Industries Inc
Publication of GB1478740A publication Critical patent/GB1478740A/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
    • C21D8/1244—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
    • C21D8/1216—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
    • C21D8/1261—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 following hot rolling

Landscapes

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

Abstract

1478740 Processing silicon steel ALLEGHENY LUDLUM INDUSTRIES Inc 22 Sept 1975 [18 Nov 1974] 38766/75 Heading C7A [Also in Division B3] Steel containing in percentage by wt. C - 0À07 Si 2À6 - 4 Mn 0À03 - 0À24 S and/or Se 0À01 - 0À09 (#0À01 Se) Al 0À015 - 0À04 N - 0À02 Cu 0À1 - 0À5 Fe is hot rolled, cold rolled in one or more stages with an anneal before the final stage, which latter must effect a reduction of at least 80% in thickness, decarbarized and finally annealed to produce a cube-on-edge orientation yielding a permeability of at least 1850 G/oe at 10 Oe. The anneal preceding final cold rolling is carried out at 1400 - 2150‹F for 15 seconds to 2 hours followed by cooling to a temperature in the range 1700‹-750‹F at a rate not exceeding that in a static atmosphere or a continuous processing line with no intentional atmospheric motion, and then quenching from that temperature to below 500‹F with liquid or a gas stream. Where annealing is carried out in the range 1400‹-1700‹ F the quenching may be directly applied.
GB38766/75A 1974-11-18 1975-09-22 Processing for high permeability silicon steel Expired GB1478740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US524831A US3925115A (en) 1974-11-18 1974-11-18 Process employing cooling in a static atmosphere for high permeability silicon steel comprising copper

Publications (1)

Publication Number Publication Date
GB1478740A true GB1478740A (en) 1977-07-06

Family

ID=24090841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38766/75A Expired GB1478740A (en) 1974-11-18 1975-09-22 Processing for high permeability silicon steel

Country Status (16)

Country Link
US (1) US3925115A (en)
JP (1) JPS5843443B2 (en)
AR (1) AR207795A1 (en)
BE (1) BE834875A (en)
BR (1) BR7507584A (en)
CA (1) CA1045955A (en)
DE (1) DE2547313C2 (en)
ES (1) ES441709A1 (en)
FR (1) FR2291275B1 (en)
GB (1) GB1478740A (en)
IN (1) IN143213B (en)
IT (1) IT1047746B (en)
PL (1) PL106204B1 (en)
SE (1) SE414948B (en)
YU (1) YU291275A (en)
ZA (1) ZA757206B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929522A (en) * 1974-11-18 1975-12-30 Allegheny Ludlum Ind Inc Process involving cooling in a static atmosphere for high permeability silicon steel comprising copper
US4054470A (en) * 1976-06-17 1977-10-18 Allegheny Ludlum Industries, Inc. Boron and copper bearing silicon steel and processing therefore
JPS5948935B2 (en) * 1981-08-05 1984-11-29 新日本製鐵株式会社 Manufacturing method of low iron loss unidirectional electrical steel sheet
JPS58157917A (en) * 1982-03-15 1983-09-20 Kawasaki Steel Corp Manufacture of unidirectional silicon steel plate with superior magnetic characteristic
DE3382043D1 (en) * 1982-08-18 1991-01-17 Kawasaki Steel Co METHOD FOR PRODUCING CORNORIENTED SHEETS OR TAPES FROM SILICON STEEL WITH HIGH MAGNETIC INDUCTION AND LOW IRON LOSS.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287184A (en) * 1963-10-22 1966-11-22 Bethlehem Steel Corp Method of producing low carbon electrical sheet steel
CA920035A (en) * 1968-04-27 1973-01-30 Taguchi Satoru Method for producing an electro-magnetic steel sheet of a thin sheet thickness having a high magnetic induction
US3671337A (en) * 1969-02-21 1972-06-20 Nippon Steel Corp Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics
BE790798A (en) * 1971-11-04 1973-02-15 Armco Steel Corp Manufacturing process of cube-on-edge orientation silicon iron from cast slabs
US3770517A (en) * 1972-03-06 1973-11-06 Allegheny Ludlum Ind Inc Method of producing substantially non-oriented silicon steel strip by three-stage cold rolling
US3855018A (en) * 1972-09-28 1974-12-17 Allegheny Ludlum Ind Inc Method for producing grain oriented silicon steel comprising copper
US3873381A (en) * 1973-03-01 1975-03-25 Armco Steel Corp High permeability cube-on-edge oriented silicon steel and method of making it
US3855019A (en) * 1973-05-07 1974-12-17 Allegheny Ludlum Ind Inc Processing for high permeability silicon steel comprising copper
US3855021A (en) * 1973-05-07 1974-12-17 Allegheny Ludlum Ind Inc Processing for high permeability silicon steel comprising copper
US3855020A (en) * 1973-05-07 1974-12-17 Allegheny Ludlum Ind Inc Processing for high permeability silicon steel comprising copper

Also Published As

Publication number Publication date
YU291275A (en) 1982-02-28
JPS5843443B2 (en) 1983-09-27
PL106204B1 (en) 1979-12-31
DE2547313A1 (en) 1976-05-20
SE414948B (en) 1980-08-25
IN143213B (en) 1977-10-15
AU8494675A (en) 1977-03-24
BR7507584A (en) 1976-08-03
BE834875A (en) 1976-02-16
AR207795A1 (en) 1976-10-29
JPS5173921A (en) 1976-06-26
ES441709A1 (en) 1977-03-16
IT1047746B (en) 1980-10-20
ZA757206B (en) 1976-11-24
SE7512967L (en) 1976-05-19
US3925115A (en) 1975-12-09
CA1045955A (en) 1979-01-09
FR2291275A1 (en) 1976-06-11
FR2291275B1 (en) 1985-10-31
DE2547313C2 (en) 1986-07-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee