GB1460943A - Method for forming an insulating glass film on oriented silicon steel sheets - Google Patents
Method for forming an insulating glass film on oriented silicon steel sheetsInfo
- Publication number
- GB1460943A GB1460943A GB1466074A GB1466074A GB1460943A GB 1460943 A GB1460943 A GB 1460943A GB 1466074 A GB1466074 A GB 1466074A GB 1466074 A GB1466074 A GB 1466074A GB 1460943 A GB1460943 A GB 1460943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesia
- glass film
- sheet
- particles
- forming
- 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
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
- H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Physical Vapour Deposition (AREA)
Abstract
1460943 Coating silicon-steel KAWASAKI STEEL CORP 2 April 1974 [11 April 1973] 14660/74 Heading C1M In forming an electrically insulating magnesiasilica glass film on an oriented silicon-steel sheet, magnesia particles are applied to a surface of the sheet as an annealing separator, the sheet then being coiled and annealed to form the magnesia-silica glass film, the magnesia used comprising 1-20% by weight of particles which pass through a 100 mesh sieve (Tyler Standard Sieve) but are retained on a 325 mesh sieve (i.e. these particles are of size 44-150 microns). The magnesia used, which may be obtained by calcining magnesium hydroxide or magnesium carbonate, is preferably applied to the sheet, as an aqueous slurry, by dipping or spraying. The magnesia is preferably applied so as to give a coating of 4-10 gm./m.<SP>2</SP>. The slurry may contain methyl cellulose as an additive. The silicon-steel sheet may be annealed, before application of the magnesia, at, e.g. 820‹ C. in a H 2 /N 2 atmosphere. The annealing to form the glass film may be carried out at, e.g. 1200‹ C. in an atmosphere of hydrogen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4104073A JPS5414566B2 (en) | 1973-04-11 | 1973-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1460943A true GB1460943A (en) | 1977-01-06 |
Family
ID=12597277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1466074A Expired GB1460943A (en) | 1973-04-11 | 1974-04-02 | Method for forming an insulating glass film on oriented silicon steel sheets |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5414566B2 (en) |
| AU (1) | AU476897B2 (en) |
| BE (1) | BE813599A (en) |
| BR (1) | BR7402873D0 (en) |
| CA (1) | CA1018875A (en) |
| DE (1) | DE2417298A1 (en) |
| DK (1) | DK149307C (en) |
| FI (1) | FI56401C (en) |
| FR (1) | FR2225548B1 (en) |
| GB (1) | GB1460943A (en) |
| IT (1) | IT1009796B (en) |
| NO (1) | NO741199L (en) |
| SE (1) | SE410624B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118928A (en) * | 1982-04-21 | 1983-11-09 | Geoffrey Cooke | Enamelling process |
| US4443425A (en) * | 1981-12-09 | 1984-04-17 | Calgon Corporation | Magnesium oxide composition for coating silicon steel |
| RU2569267C1 (en) * | 2011-10-04 | 2015-11-20 | ДжФЕ СТИЛ КОРПОРЕЙШН | Annealing separator for grain-oriented electrical sheet steel |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3438291B1 (en) | 2016-03-30 | 2020-06-24 | Tateho Chemical Industries Co., Ltd. | Magnesium oxide for annealing separator, and grain-oriented electromagnetic steel sheet |
| JP6494554B2 (en) | 2016-03-30 | 2019-04-03 | タテホ化学工業株式会社 | Magnesium oxide and grain-oriented electrical steel sheet for annealing separator |
| JP6494555B2 (en) | 2016-03-30 | 2019-04-03 | タテホ化学工業株式会社 | Magnesium oxide and grain-oriented electrical steel sheet for annealing separator |
| JP6472767B2 (en) | 2016-03-30 | 2019-02-20 | タテホ化学工業株式会社 | Magnesium oxide and grain-oriented electrical steel sheet for annealing separator |
| JP6579078B2 (en) * | 2016-10-18 | 2019-09-25 | Ｊｆｅスチール株式会社 | Method for producing grain-oriented electrical steel sheet |
| WO2022045221A1 (en) | 2020-08-28 | 2022-03-03 | Ｊｆｅスチール株式会社 | Powder for annealing separator, method for producing same, and method for producing grain-oriented electrical steel sheet |
| US20240043950A1 (en) * | 2021-03-15 | 2024-02-08 | Jfe Steel Corporation | Powder for annealing separator and production method for grain-oriented electrical steel sheet using same |
-
1973
- 1973-04-11 JP JP4104073A patent/JPS5414566B2/ja not_active Expired
-
1974
- 1974-03-25 SE SE7403973A patent/SE410624B/en not_active IP Right Cessation
- 1974-04-02 GB GB1466074A patent/GB1460943A/en not_active Expired
- 1974-04-03 AU AU67521/74A patent/AU476897B2/en not_active Expired
- 1974-04-03 NO NO741199A patent/NO741199L/en unknown
- 1974-04-09 DK DK198174A patent/DK149307C/en not_active IP Right Cessation
- 1974-04-09 DE DE2417298A patent/DE2417298A1/en active Pending
- 1974-04-10 FR FR7412668A patent/FR2225548B1/fr not_active Expired
- 1974-04-10 IT IT21206/74A patent/IT1009796B/en active
- 1974-04-10 CA CA197,333A patent/CA1018875A/en not_active Expired
- 1974-04-10 FI FI1085/74A patent/FI56401C/en active
- 1974-04-10 BR BR2873/74A patent/BR7402873D0/en unknown
- 1974-04-11 BE BE143098A patent/BE813599A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443425A (en) * | 1981-12-09 | 1984-04-17 | Calgon Corporation | Magnesium oxide composition for coating silicon steel |
| GB2118928A (en) * | 1982-04-21 | 1983-11-09 | Geoffrey Cooke | Enamelling process |
| RU2569267C1 (en) * | 2011-10-04 | 2015-11-20 | ДжФЕ СТИЛ КОРПОРЕЙШН | Annealing separator for grain-oriented electrical sheet steel |
Also Published As
| Publication number | Publication date |
|---|---|
| NO741199L (en) | 1974-10-14 |
| AU6752174A (en) | 1975-10-09 |
| IT1009796B (en) | 1976-12-20 |
| FI56401B (en) | 1979-09-28 |
| JPS5414566B2 (en) | 1979-06-08 |
| CA1018875A (en) | 1977-10-11 |
| FI56401C (en) | 1980-01-10 |
| FR2225548A1 (en) | 1974-11-08 |
| DK149307C (en) | 1986-09-15 |
| BE813599A (en) | 1974-07-31 |
| DK149307B (en) | 1986-04-28 |
| AU476897B2 (en) | 1976-10-07 |
| DE2417298A1 (en) | 1974-10-24 |
| JPS49126536A (en) | 1974-12-04 |
| NO135905C (en) | 1977-06-22 |
| SE410624B (en) | 1979-10-22 |
| FR2225548B1 (en) | 1979-03-30 |
| BR7402873D0 (en) | 1974-11-19 |
| NO135905B (en) | 1977-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19940401 |