GB1266956A - - Google Patents

Info

Publication number
GB1266956A
GB1266956A GB1266956DA GB1266956A GB 1266956 A GB1266956 A GB 1266956A GB 1266956D A GB1266956D A GB 1266956DA GB 1266956 A GB1266956 A GB 1266956A
Authority
GB
United Kingdom
Prior art keywords
strip
combined water
april
coating
water
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
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 filed Critical
Publication of GB1266956A publication Critical patent/GB1266956A/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
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
    • C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • Chemical Treatment Of Metals (AREA)
  • Chemically Coating (AREA)

Abstract

1,266,956. Annealing silicon steel strip. NIPPON STEEL CORP. April 24, 1969 [April 30, 1968], No.20941/69. Heading C7D. A silicon steel strip is treated with a slurry of a metal hydroxide, containing combined water and capable of forming a glassy film by reaction with SiO 2 in the strip surface, the coating is dried without removing combined water and the strip is wound into a tight coil which is placed on an apertured base plate in the annealing furnace where it is annealed, the heat removing the combined water, causing a contraction in volume of the coating whereby passages are formed between the turns of the coil through which the furnace gas may be circulated. The hydroxide may be of an alkaline earth metal and may be produced for example by slurrying MgO with water.
GB1266956D 1968-04-30 1969-04-24 Expired GB1266956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2888868 1968-04-30

Publications (1)

Publication Number Publication Date
GB1266956A true GB1266956A (en) 1972-03-15

Family

ID=12260918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266956D Expired GB1266956A (en) 1968-04-30 1969-04-24

Country Status (4)

Country Link
US (1) US3653984A (en)
FR (1) FR2007295A1 (en)
GB (1) GB1266956A (en)
SE (1) SE357578B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879234A (en) * 1971-12-22 1975-04-22 Merck & Co Inc Lithia-containing frit additives for MgO coatings
JPS5231296B2 (en) * 1973-06-07 1977-08-13
US4113530A (en) * 1974-04-23 1978-09-12 Kawasaki Steel Corporation Method for forming a heat-resistant insulating film on a grain oriented silicon steel sheet
DE3503089A1 (en) * 1985-01-30 1986-07-31 Carl Prof. Dr.-Ing. 5100 Aachen Kramer DEVICE FOR EVENLY APPLYING A TARGET SURFACE WITH A GAS
US4662954A (en) * 1985-08-13 1987-05-05 Allegheny Ludlum Corporation Method for improving base coating formation on silicon steel by controlling winding tension

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492682A (en) * 1945-07-23 1949-12-27 Armco Steel Corp Processes of producing glass coated silicon steel
US2533351A (en) * 1946-11-22 1950-12-12 Armco Steel Corp Formation of glass film on silicon steel by strip annealing
US3084081A (en) * 1957-12-30 1963-04-02 Armco Steel Corp Heat treatment of ferrous strip materials with separator coating
US3037889A (en) * 1958-12-04 1962-06-05 United States Steel Corp Method and apparatus for annealing coils of strip metal
GB892652A (en) * 1959-06-10 1962-03-28 Lee Wilson Stabilizer for opened coils of strip metal
US3132056A (en) * 1961-05-19 1964-05-05 Gen Electric Insulating coating for magnetic sheet material and method for producing the same
US3331713A (en) * 1964-06-15 1967-07-18 Allegheny Ludlum Steel Method of forming an insulating coating on silicon-iron sheets

Also Published As

Publication number Publication date
FR2007295A1 (en) 1970-01-02
US3653984A (en) 1972-04-04
SE357578B (en) 1973-07-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees