GB932724A - Improvements in or relating to silicon iron alloys - Google Patents

Improvements in or relating to silicon iron alloys

Info

Publication number
GB932724A
GB932724A GB43352/60A GB4335260A GB932724A GB 932724 A GB932724 A GB 932724A GB 43352/60 A GB43352/60 A GB 43352/60A GB 4335260 A GB4335260 A GB 4335260A GB 932724 A GB932724 A GB 932724A
Authority
GB
United Kingdom
Prior art keywords
cold rolling
rolling
heat treatment
silicon
range
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
GB43352/60A
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of GB932724A publication Critical patent/GB932724A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets
    • 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
    • C21D8/1255—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 with diffusion of elements, e.g. decarburising, nitriding
    • 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

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

Abstract

932,724. Making magnetic sheet and strip; altering molecular structure. VACUUMSCHMELZE A.G. Dec. 16, 1960 [Dec. 24, 1959], No. 43352/60. Classes 83 (2) and 83 (4). A method of producing a sheet, strip or ribbon by the deformation and heat treatment of an alloy containing iron, approximately 2 to 5% of silicon and less than 1% of other substances such as manganese, molybdenum, or chromium and which has a cubic structure, wherein, so far as at least 80% of the elementary cubes are concerned, two faces of each cube lie substantially parallel with the rolling plane, and wherein, so far as at least 10% of said faces are concerned, the edges of said faces lie in at least four different predetermined directions which are inclined to the rolling direction at angles other than 0% and 90%, said method being characterized in that a workpiece of said alloy is subjected to hot rolling, followed by pickling, by one or more stages of cold rolling, and by a heat treatment at a temperature within the range of from 800‹ C. to 1100‹ C., intervening between two consecutive stages of cold rolling when more than one stage is used, and a final heat treatment after the last cold rolling at a temperature within the range of from 1000‹ C. to 1300‹ C., said heat treatment being carried out in an atmosphere which prevents the formation of silicon oxide, or alternatively, which causes the disappearance of any silicon oxide which may be present on the surface of the said sheet, strip or ribbon and wherein the thickness of the workpiece is reduced during the first, or the last, stage of cold rolling from 90% to 97%. The predetermined values for the said angle between the rolling direction and the cube edges are +25, +37, +53, +65, - 25, - 37, - 53 and - 65 degrees. During the penultimate stage of the cold rolling the workpiece is reduced within the range of from 90% to 97% and during the last stage within the range of from 30% to 80%. Figs. 2 and 4 show the area texture produced by the method according to the invention on which the cube edges are orientated irregularly and the arrows of Fig. 4 shows that with area texture the magnetic flux encounters grains with favourable orientation everywhere and thus magnetic resistance is greatly reduced. Specific examples of producing sheets of silicon iron containing approximately 2.2 to 2.8% silicon and exhibiting area texture are given in the Specification.
GB43352/60A 1959-12-24 1960-12-16 Improvements in or relating to silicon iron alloys Expired GB932724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV17795A DE1212124B (en) 1959-12-24 1959-12-24 Process for the production of sheet metal from iron-silicon alloys

Publications (1)

Publication Number Publication Date
GB932724A true GB932724A (en) 1963-07-31

Family

ID=7576613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43352/60A Expired GB932724A (en) 1959-12-24 1960-12-16 Improvements in or relating to silicon iron alloys

Country Status (5)

Country Link
US (1) US3218202A (en)
BE (1) BE598512A (en)
DE (1) DE1212124B (en)
GB (1) GB932724A (en)
SE (1) SE307370B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351501A (en) * 1964-06-04 1967-11-07 Westinghouse Electric Corp Process for producing magnetic sheets with cube-on-face grain texture
US4251296A (en) * 1979-05-11 1981-02-17 Westinghouse Electric Corp. Method of preparing an oriented-low-alloy iron from an ingot of controlled sulfur, manganese and oxygen contents
US4251295A (en) * 1979-05-11 1981-02-17 Westinghouse Electric Corp. Method of preparing an oriented low alloy iron from an ingot alloy having a high initial sulfur content
SE442751B (en) * 1980-01-04 1986-01-27 Kawasaki Steel Co SET TO MAKE A CORN ORIENTED SILICONE PLATE
JPS61117215A (en) * 1984-10-31 1986-06-04 Nippon Steel Corp Manufacture of grain oriented magnetic steel sheet of low iron loss
DE4337605C2 (en) * 1993-11-01 1996-02-08 Eko Stahl Gmbh Method for producing grain-oriented electrical steel and magnetic cores made therefrom
CN112231368A (en) * 2020-09-18 2021-01-15 邯郸钢铁集团有限责任公司 Unary linear regression analysis method based on steel production big data

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940882A (en) * 1956-09-20 1960-06-14 Gen Electric Magnetic material
US3061486A (en) * 1957-12-30 1962-10-30 Armco Steel Corp Non-directional oriented silicon-iron
US3105781A (en) * 1960-05-02 1963-10-01 Gen Electric Method for making cube-on-edge texture in high purity silicon-iron
US3078198A (en) * 1961-06-07 1963-02-19 Westinghouse Electric Corp Process for producing oriented silicon steel

Also Published As

Publication number Publication date
DE1212124B (en) 1966-03-10
SE307370B (en) 1969-01-07
BE598512A (en) 1961-06-23
US3218202A (en) 1965-11-16

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