JPS54128928A - Protective coating material for annealing of anisotropic silicon steel plate - Google Patents
Protective coating material for annealing of anisotropic silicon steel plateInfo
- Publication number
- JPS54128928A JPS54128928A JP3770978A JP3770978A JPS54128928A JP S54128928 A JPS54128928 A JP S54128928A JP 3770978 A JP3770978 A JP 3770978A JP 3770978 A JP3770978 A JP 3770978A JP S54128928 A JPS54128928 A JP S54128928A
- Authority
- JP
- Japan
- Prior art keywords
- plates
- coating material
- annealing
- silicon steel
- protective coating
- 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.)
- Pending
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE:To enhance the iron loss, magnetic flux density, etc. of silicon steel plates by using MgO mixed with a specific amt. of TiO2, SiO2 and a B cpd. as a protective coating material in annealing of the plates. CONSTITUTION:Anisotropic silicon steel plates as transformer material are annealed to carry out secondary recrystallization and remove impurities. In order to avoid fusion of the plates in annealing, the plate surfaces are coated with a protective coating material obtd. by suspending MgO, in water, mixed with TiO2; 1-10% and SiO2; 1-10% or further mixed with a B cpd.; 0.01 - 0.5% as B. The amt. of the material coated is 10-20 g/m<2>. The coated plates are dried at 200-500 deg.C and coiled. The plate coils are finish annealed at 1100-1300 deg.C. By the reaction of the coating material with the plates, glassy films are formed to provide large tensile stress, thereby remarkably enhancing the iron loss and magnetic flux density of the plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3770978A JPS54128928A (en) | 1978-03-31 | 1978-03-31 | Protective coating material for annealing of anisotropic silicon steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3770978A JPS54128928A (en) | 1978-03-31 | 1978-03-31 | Protective coating material for annealing of anisotropic silicon steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54128928A true JPS54128928A (en) | 1979-10-05 |
Family
ID=12505041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3770978A Pending JPS54128928A (en) | 1978-03-31 | 1978-03-31 | Protective coating material for annealing of anisotropic silicon steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54128928A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59232219A (en) * | 1983-06-16 | 1984-12-27 | Asahi Kagaku Kogyo Kk | Annealing adhesion inhibitor for steel material having graphitization preventing effect |
| JPS59232218A (en) * | 1983-06-16 | 1984-12-27 | Asahi Kagaku Kogyo Kk | Annealing adhesion inhibitor for steel material |
| EP0416420A2 (en) * | 1989-09-08 | 1991-03-13 | Armco Inc. | Magnesium oxide coating for electrical steels and the method of coating |
| US7981223B2 (en) | 2001-07-16 | 2011-07-19 | Nippon Steel Corporation | Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same |
-
1978
- 1978-03-31 JP JP3770978A patent/JPS54128928A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59232219A (en) * | 1983-06-16 | 1984-12-27 | Asahi Kagaku Kogyo Kk | Annealing adhesion inhibitor for steel material having graphitization preventing effect |
| JPS59232218A (en) * | 1983-06-16 | 1984-12-27 | Asahi Kagaku Kogyo Kk | Annealing adhesion inhibitor for steel material |
| EP0416420A2 (en) * | 1989-09-08 | 1991-03-13 | Armco Inc. | Magnesium oxide coating for electrical steels and the method of coating |
| US7981223B2 (en) | 2001-07-16 | 2011-07-19 | Nippon Steel Corporation | Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same |
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