EP0416420A3 - Magnesium oxide coating for electrical steels and the method of coating - Google Patents

Magnesium oxide coating for electrical steels and the method of coating Download PDF

Info

Publication number
EP0416420A3
EP0416420A3 EP19900116384 EP90116384A EP0416420A3 EP 0416420 A3 EP0416420 A3 EP 0416420A3 EP 19900116384 EP19900116384 EP 19900116384 EP 90116384 A EP90116384 A EP 90116384A EP 0416420 A3 EP0416420 A3 EP 0416420A3
Authority
EP
European Patent Office
Prior art keywords
coating
magnesium oxide
electrical steels
oxide coating
steels
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.)
Granted
Application number
EP19900116384
Other versions
EP0416420A2 (en
EP0416420B1 (en
Inventor
Wade S. Wright
Robin A. Murphy
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.)
Armco Inc
Original Assignee
Armco 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 Armco Inc filed Critical Armco Inc
Publication of EP0416420A2 publication Critical patent/EP0416420A2/en
Publication of EP0416420A3 publication Critical patent/EP0416420A3/en
Application granted granted Critical
Publication of EP0416420B1 publication Critical patent/EP0416420B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
    • C21D8/1283—Application of a separating or insulating coating
    • 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
    • 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/04—Decarburising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP90116384A 1989-09-08 1990-08-27 Magnesium oxide coating for electrical steels and the method of coating Expired - Lifetime EP0416420B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40471489A 1989-09-08 1989-09-08
US404714 1989-09-08

Publications (3)

Publication Number Publication Date
EP0416420A2 EP0416420A2 (en) 1991-03-13
EP0416420A3 true EP0416420A3 (en) 1992-11-19
EP0416420B1 EP0416420B1 (en) 1994-12-14

Family

ID=23600734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116384A Expired - Lifetime EP0416420B1 (en) 1989-09-08 1990-08-27 Magnesium oxide coating for electrical steels and the method of coating

Country Status (6)

Country Link
EP (1) EP0416420B1 (en)
JP (1) JP2686455B2 (en)
KR (1) KR0173781B1 (en)
BR (1) BR9004444A (en)
CA (1) CA2024226C (en)
DE (1) DE69015060T2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2690841B2 (en) * 1992-09-18 1997-12-17 新日本製鐵株式会社 Annealing Separator for grain oriented electrical steel sheet for obtaining uniform high-strength glass coating and excellent magnetic properties
DE4409691A1 (en) * 1994-03-22 1995-09-28 Ebg Elektromagnet Werkstoffe Process for the production of electrical sheets with a glass coating
JP3475258B2 (en) * 1994-05-23 2003-12-08 株式会社海水化学研究所 Ceramic film forming agent and method for producing the same
KR100245032B1 (en) * 1994-11-16 2000-03-02 아사무라 타카싯 Process for producing directional sheet excellent in glass coating and magnetic properties
WO1996015291A1 (en) * 1994-11-16 1996-05-23 Nippon Steel Corporation Process for producing directional electrical sheet excellent in glass coating and magnetic properties
DE19750066C1 (en) * 1997-11-12 1999-08-05 Ebg Elektromagnet Werkstoffe Process for coating electrical steel strips with an annealing separator
KR19990042456A (en) * 1997-11-26 1999-06-15 성재갑 Aerosol composition of hair treatment lotion and valve for injecting same
KR100435477B1 (en) * 1999-12-27 2004-06-10 주식회사 포스코 A method for manufacturing grain-oriented electrical steel sheet having no surface defects and superior punching property
DE102008039326A1 (en) 2008-08-22 2010-02-25 IWT Stiftung Institut für Werkstofftechnik Preparing electrically insulated electric sheet, to prepare laminated magnetic core, comprises coating one side of sheet using liquid mixture comprising hydrolyzed and condensed metal organic monomer, and heat treating coated sheet
CN102453793B (en) * 2010-10-25 2013-09-25 宝山钢铁股份有限公司 Annealing isolation agent used for preparing mirror surface-oriented silicon steel with excellent magnetic property
CN104066857B (en) 2012-02-13 2016-06-01 索拉劳尼克斯股份有限公司 The cooling of cated sheet metal band
EP4053296A4 (en) * 2019-10-31 2022-11-02 JFE Steel Corporation Grain-oriented electromagnetic steel sheet and method for manufacturing same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841925A (en) * 1973-09-12 1974-10-15 Morton Norwich Products Inc Magnesium oxide steel coating composition and process
US3956029A (en) * 1973-06-07 1976-05-11 Nippon Steel Corporation Annealing separator for heat treatment of silicon steel sheets
US4032366A (en) * 1975-05-23 1977-06-28 Allegheny Ludlum Industries, Inc. Grain-oriented silicon steel and processing therefor
FR2399485A1 (en) * 1977-08-04 1979-03-02 Armco Inc Viscosity stabilisation of magnesia suspensions - by adding a decomposable phosphate
US4190469A (en) * 1977-11-09 1980-02-26 Kawasaki Steel Corporation Method for forming forsterite insulating film on an oriented silicon steel sheet
EP0305966A1 (en) * 1987-08-31 1989-03-08 Nippon Steel Corporation Method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441220A (en) * 1977-09-09 1979-04-02 Nippon Steel Corp Manufacture of oriented electrical steel sheet with superior magnetic characteristics
JPS54128928A (en) * 1978-03-31 1979-10-05 Nippon Steel Corp Protective coating material for annealing of anisotropic silicon steel plate
JPS6096770A (en) * 1983-10-28 1985-05-30 Nippon Steel Corp Preparation of oriented electromagnetic steel plate excellent in iron loss

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956029A (en) * 1973-06-07 1976-05-11 Nippon Steel Corporation Annealing separator for heat treatment of silicon steel sheets
US3841925A (en) * 1973-09-12 1974-10-15 Morton Norwich Products Inc Magnesium oxide steel coating composition and process
US4032366A (en) * 1975-05-23 1977-06-28 Allegheny Ludlum Industries, Inc. Grain-oriented silicon steel and processing therefor
FR2399485A1 (en) * 1977-08-04 1979-03-02 Armco Inc Viscosity stabilisation of magnesia suspensions - by adding a decomposable phosphate
US4190469A (en) * 1977-11-09 1980-02-26 Kawasaki Steel Corporation Method for forming forsterite insulating film on an oriented silicon steel sheet
EP0305966A1 (en) * 1987-08-31 1989-03-08 Nippon Steel Corporation Method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 3, no. 152 (C-67)14 December 1979 & JP-A-54 128 928 ( SHIN NIPPON SEITETSU ) 5 October 1979 *
PATENT ABSTRACTS OF JAPAN vol. 3, no. 68 (C-48)13 June 1979 & JP-A-54 041 220 ( SHIN NIPPON SEITETSU ) 2 April 1979 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 237 (C-305)(1960) 24 September 1985 & JP-A-60 096 770 ( SHIN NIPPON SEITETSU ) 30 May 1985 *

Also Published As

Publication number Publication date
CA2024226A1 (en) 1991-03-09
KR0173781B1 (en) 1999-02-18
JP2686455B2 (en) 1997-12-08
BR9004444A (en) 1991-09-10
DE69015060D1 (en) 1995-01-26
EP0416420A2 (en) 1991-03-13
DE69015060T2 (en) 1995-04-27
EP0416420B1 (en) 1994-12-14
KR910006518A (en) 1991-04-29
JPH03120376A (en) 1991-05-22
CA2024226C (en) 2000-02-15

Similar Documents

Publication Publication Date Title
HU9401580D0 (en) Method for the preparation and popification of alphia - interferon
GB2234691B (en) Coating method
EP0282878A3 (en) Arrangement of optical-integrated spectrometer and method for the making the same
KR960004749B1 (en) Intermediate coating of steel wire and the method thereof
EG19198A (en) Coating method
GB9008415D0 (en) Process for the direct reduction of metal oxides
GB8917470D0 (en) Composition and method
AU5118390A (en) Steel sheets for porcelain enameling and method of producing the same
AU589541B2 (en) Surface treatment for metal and composition therefor
PL286707A1 (en) Method of obteining tetraniture
AU582515B2 (en) Composition and method for metal surface refinement
EP0416420A3 (en) Magnesium oxide coating for electrical steels and the method of coating
GB2237299B (en) Trim and method of use
GB2213406B (en) Coating apparatus and method
EP0426122A3 (en) Coating method
GB2199335B (en) Coating composition and method
EP0430579A3 (en) Fluoroaliphatic-group-substituted esters and method of making the same
GB2211860B (en) Method and apparatus for the direct reduction of iron
GB9027463D0 (en) Method of preventing oxygen embrittlement
EP0432619A3 (en) Laminate and method of manufacture
JPS6431983A (en) Metal treatment composition and method
GB2219526B (en) Method and apparatus for the preparation of scrap
AU5988890A (en) Method and apparatus for smelting iron oxide
PL295761A1 (en) Method of obtaining antraquinone
FI91178B (en) Coating arrangement and method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19930506

17Q First examination report despatched

Effective date: 19930726

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ARMCO INC.

RBV Designated contracting states (corrected)

Designated state(s): BE DE FR GB IT LU

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
RBV Designated contracting states (corrected)

Designated state(s): BE DE FR GB IT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

REF Corresponds to:

Ref document number: 69015060

Country of ref document: DE

Date of ref document: 19950126

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20040917

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

BERE Be: lapsed

Owner name: *ARMCO INC.

Effective date: 20050831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090817

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090825

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090827

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090827

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20100826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100827