GB1478739A - Processing for high permeability silicon steel - Google Patents

Processing for high permeability silicon steel

Info

Publication number
GB1478739A
GB1478739A GB38765/75A GB3876575A GB1478739A GB 1478739 A GB1478739 A GB 1478739A GB 38765/75 A GB38765/75 A GB 38765/75A GB 3876575 A GB3876575 A GB 3876575A GB 1478739 A GB1478739 A GB 1478739A
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
GB38765/75A
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 GB1478739A publication Critical patent/GB1478739A/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
    • 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
    • C21D8/1216—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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Metal Rolling (AREA)

Abstract

1478739 Processing silicon steel ALLEGHENY LUDLUM INDUSTRIES Inc 22 Sept 1975 [18 Nov 1974] 38765/75 Heading C7A [Also in Division B3] Steel containing in percentage by wt. C - 0.07 Si 2.6 - 4 Mn 0.03 - 0.24 S and/or Se 0.01 - 0.09 in total Al 0.015 - 0.04 N - 0.02 Cu 0.1 - 0.5 B 0.00045 - 0.0035 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, decarborized 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.
GB38765/75A 1974-11-18 1975-09-22 Processing for high permeability silicon steel Expired GB1478739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US524846A US3929522A (en) 1974-11-18 1974-11-18 Process involving cooling in a static atmosphere for high permeability silicon steel comprising copper

Publications (1)

Publication Number Publication Date
GB1478739A true GB1478739A (en) 1977-07-06

Family

ID=24090895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38765/75A Expired GB1478739A (en) 1974-11-18 1975-09-22 Processing for high permeability silicon steel

Country Status (14)

Country Link
US (1) US3929522A (en)
JP (1) JPS5843444B2 (en)
AR (1) AR208730A1 (en)
BE (1) BE834876A (en)
CA (1) CA1041879A (en)
DE (1) DE2550426A1 (en)
ES (1) ES441705A1 (en)
FR (1) FR2291276A1 (en)
GB (1) GB1478739A (en)
IN (1) IN143003B (en)
IT (1) IT1047747B (en)
PL (1) PL106073B1 (en)
SE (1) SE414949B (en)
YU (1) YU291375A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558621A (en) * 1975-07-05 1980-01-09 Zaidan Hojin Denki Jiki Zairyo High dumping capacity alloy
US4054470A (en) * 1976-06-17 1977-10-18 Allegheny Ludlum Industries, Inc. Boron and copper bearing silicon steel and processing therefore
US4174235A (en) * 1978-01-09 1979-11-13 General Electric Company Product and method of producing silicon-iron sheet material employing antimony
US4113529A (en) * 1977-09-29 1978-09-12 General Electric Company Method of producing silicon-iron sheet material with copper as a partial substitute for sulfur, and product
US4177091A (en) * 1978-08-16 1979-12-04 General Electric Company Method of producing silicon-iron sheet material, and product
JPS57145963A (en) * 1981-03-04 1982-09-09 Hitachi Metals Ltd Material for magnetic head and its manufacture
JPS6048886B2 (en) * 1981-08-05 1985-10-30 新日本製鐵株式会社 High magnetic flux density unidirectional electrical steel sheet with excellent iron loss and method for manufacturing the same
JPH01159859U (en) * 1988-04-28 1989-11-06
US5078808A (en) † 1990-07-09 1992-01-07 Armco Inc. Method of making regular grain oriented silicon steel without a hot band anneal
DE69128624T3 (en) † 1991-10-21 2002-05-29 Armco Inc., Middletown Process for the production of normal grain-oriented steel with high silicon and low carbon content

Family Cites Families (11)

* 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
US3925115A (en) * 1974-11-18 1975-12-09 Allegheny Ludlum Ind Inc Process employing cooling in a static atmosphere for high permeability silicon steel comprising copper

Also Published As

Publication number Publication date
US3929522A (en) 1975-12-30
FR2291276B1 (en) 1981-08-28
SE7512968L (en) 1976-05-19
JPS5843444B2 (en) 1983-09-27
DE2550426A1 (en) 1976-05-20
BE834876A (en) 1976-02-16
YU291375A (en) 1982-02-28
AR208730A1 (en) 1977-02-28
DE2550426C2 (en) 1987-12-23
IT1047747B (en) 1980-10-20
PL106073B1 (en) 1979-11-30
FR2291276A1 (en) 1976-06-11
IN143003B (en) 1977-09-17
ES441705A1 (en) 1977-04-01
AU8499875A (en) 1977-03-24
CA1041879A (en) 1978-11-07
SE414949B (en) 1980-08-25
JPS5173922A (en) 1976-06-26

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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