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GB833487A - Process and apparatus for improving the qualities of sheet metal, more especially sheet metal for use in electrical equipment - Google Patents

Process and apparatus for improving the qualities of sheet metal, more especially sheet metal for use in electrical equipment

Info

Publication number
GB833487A
GB833487A GB13719/56A GB1371956A GB833487A GB 833487 A GB833487 A GB 833487A GB 13719/56 A GB13719/56 A GB 13719/56A GB 1371956 A GB1371956 A GB 1371956A GB 833487 A GB833487 A GB 833487A
Authority
GB
United Kingdom
Prior art keywords
sheet metal
cooling
coil
sheets
magnetizing
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
GB13719/56A
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.)
WILLY HERMANN SCHLIEKER
Original Assignee
WILLY HERMANN SCHLIEKER
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 WILLY HERMANN SCHLIEKER filed Critical WILLY HERMANN SCHLIEKER
Publication of GB833487A publication Critical patent/GB833487A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
    • 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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

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

Abstract

833,487. Annealing. SCHLIEKER, W. H., [trading as WALZWERKE NEVIGES, W. H. SCHLIEKER & CO.]. May 3, 1956 [May 3, 1955], No. 13719/56. Class 72 [Also in Group XXII] A process for improving sheets of ferromagnetic material is characterized in that the sheets are passed through finishing rolls and thence directly through a zone in which they are subjected to a thermal treatment including a progressive cooling through a range of temperatures in the region of the Curie points, and in which, at least during the said cooling, they are subjected to the influence of a magnetic field. In an embodiment the sheet metal is passed through rolls A, then through an electrical heat treatment furnace B and finally through a cooling zone C. The sheet metal is preferably hot rolled or alternatively hot and cold rolled. In the cooling zone C a magnetizing section M is provided and comprises a coil 1 surrounded by heating or cooling tubes 3. Alternatively a cooling medium may be passed through part of the magnetizing coil which is extended to 1<SP>1</SP> to provide the cooling portion. Various lengths of the coil may be operated as the magnetizing section if desired. Preferably the magnetizing section is maintained under a protective gas. The sheet metal may be supported on rollers or an endless conveyer belt as it passes through the magnetizing section. The magnetizing coil may be arranged to give various directions of the field strength vector H relative to the direction of travel t of the sheet metal (Figs. 4, 5 and 6). In a modification two. coils 71 operated with direct current are used to prevent excessive voltage differences between the ends of the coil. Themagnetic field may be generated by permanent magnets or coils operated with different current strengths or different types of current may be combined. Afterthe sheet metal has been rolled, heat treated, subjected to magnetization and. in cases where the sheets have been joined into strip, after being separated again into individual sheets, the sheets are passed in quick succession through a device which weighs and measures the electrical properties of each sheet. If such properties differ from a predetermined standard a signal is given to the machine operator so that he can readjust or regulate the magnetic field strength or the temperature in the magnetizing section of the cooling zone.
GB13719/56A 1955-05-03 1956-05-03 Process and apparatus for improving the qualities of sheet metal, more especially sheet metal for use in electrical equipment Expired GB833487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW16607A DE1226128B (en) 1955-05-03 1955-05-03 Method and device for the heat treatment of metal sheets, in particular electrical sheets, in a magnetic field

Publications (1)

Publication Number Publication Date
GB833487A true GB833487A (en) 1960-04-27

Family

ID=7595794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13719/56A Expired GB833487A (en) 1955-05-03 1956-05-03 Process and apparatus for improving the qualities of sheet metal, more especially sheet metal for use in electrical equipment

Country Status (2)

Country Link
DE (1) DE1226128B (en)
GB (1) GB833487A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS565962A (en) * 1979-06-27 1981-01-22 Sony Corp Manufacture of amorphous magnetic alloy
FR2616004B1 (en) * 1987-05-25 1994-08-05 Metalimphy METHOD AND INSTALLATION FOR PRODUCING PARTS FOR MAGNETIC USE

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE569351C (en) * 1926-12-30 1933-02-02 Aeg Method and device for heating ferromagnetic materials by means of alternating magnetic fields penetrating the materials
GB366523A (en) * 1930-10-31 1932-02-01 Willoughby Statham Smith The manufacture of magnetic metals and alloys
DE590506C (en) * 1931-03-02 1934-01-11 Electrical Res Prod Inc Process for improving the magnetic properties of magnetic substances
US1965599A (en) * 1932-02-08 1934-07-10 Mills Company Sectional partition construction
BE397538A (en) * 1932-07-13
GB442211A (en) * 1933-08-07 1936-01-27 Cold Metal Process Co Improvements in and relating to manufacture of sheets of iron-silicon alloys
DE670601C (en) * 1935-03-12 1939-01-21 Aeg Process for improving the magnetic properties of strips made of iron and nickel and optionally cobalt-based alloys
US2307605A (en) * 1938-09-21 1943-01-05 Gen Electric Magnetic material heat treatment
DE919953C (en) * 1942-07-31 1954-11-08 Boehler & Co Ag Geb Process for the production of permanent magnets with a preferred magnetic direction
GB639252A (en) * 1946-09-24 1950-06-28 Transformer Steels Ltd Heat treatment of magnetic alloys containing iron

Also Published As

Publication number Publication date
DE1226128B (en) 1966-10-06

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