US3556873A - Silicon steels containing selenium - Google Patents
Silicon steels containing selenium Download PDFInfo
- Publication number
- US3556873A US3556873A US721099A US3556873DA US3556873A US 3556873 A US3556873 A US 3556873A US 721099 A US721099 A US 721099A US 3556873D A US3556873D A US 3556873DA US 3556873 A US3556873 A US 3556873A
- Authority
- US
- United States
- Prior art keywords
- selenium
- manganese
- carbon
- silicon
- 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.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
Definitions
- ABSTRACT OF THE DISCLOSURE Described is grain oriented silicon steel having a predominantly 110) [001] texture and critical carbon, manganese and selenium quantities, i.e., 0.02% to 0.07% carbon, at least 0.045% manganese, 0.01% to 0.1% selenium and not more than residual sulfur.
- selenium can be made to exercise a beneficial effect on the properties of silicon steel having not more than residual sulfur, if the carbon, manganese and selenium are critically controlled.
- manganese must be present in a carefully defined range for selenium to be beneficial for good texture development. While the phenomenon involved is not entirely 0.045% to 0.07% manganese, not more than residual sulfur, i.e., less than 0.008%, 0.01% to 0.1% selenium, preferably 0.02% to 0.08% selenium, and having a predominantly (110) [001] texture.
- Optimum properties of core loss and permeability are obtained by compositions having the nominal analysis 0.05% carbon, 0.06% manganese, 3.4% silicon, 0.04% selenium, 0.002% sulfur and 0.004% phosphorus, the balance essentially iron and other steel-making residuals.
- This composition has a 60 cycle core loss of 0.44 watt per pound at 15,000 gauss and a permeability at 10 oersteds of 1845.
- Grain oriented silicon steels within the purview of the invention are those containing 0.02% to 0.07% carbon, 2% to 4% silicon, at least 0.045% manganese, preferably It is evident from the data in Table II that low core loss with high permeability occurs in the 0.03% carbon series (Group I) at selenium contents of 0.06% and 0.08%. This group of samples also has a sulfur content in the residual range but the manganese content is 0.06%. Below or above this selenium range the core loss is higher with a corresponding decrease in permeability. However, if the carbon level is increased to 0.053%, as in the Group II higher silicon content detrimentally atlects the cold workability of the steel.
- the improved electrical properties in the silcon steel disclosed above and in the foregoing examples reflect the strong development of the (110) [001] texture.
- the development of this texture results in extremely low core loss with high permeability.
- Properties of the steels in accordance with the invention can be optimized by controlling the carbon content within the range of 0.03% to 0.053%.
- Grain oriented silicon steel having a predominantly (110) [001] texture consisting essentially of 0.02% to 0.07% carbon, 2% to 4% silicon, at least 0.045% manganese, 0.01% to 0.1% selenium and less than about 0.008% sulphur.
- Grain oriented silicon steel in accordance with claim 1 having 002% to 0.8% selenium.
- Grain oriented silicon steel in accordance with claim 1 consisting essentially of 0.02% to 0.07% carbon, 2% to 4% silicon, 0.045% to 0.07% manganese, 0.02% to 0.08% selenium and not more than 0.008% sulphur.
- Grain oriented silicon steel in accordance with claim 3 having, normally, 0.05% carbon, 0.06% manganese, 3.4% silicon and 0.04% selenium.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72109968A | 1968-04-12 | 1968-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3556873A true US3556873A (en) | 1971-01-19 |
Family
ID=24896532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US721099A Expired - Lifetime US3556873A (en) | 1968-04-12 | 1968-04-12 | Silicon steels containing selenium |
Country Status (1)
Country | Link |
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US (1) | US3556873A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932234A (en) * | 1972-10-13 | 1976-01-13 | Kawasaki Steel Corporation | Method for manufacturing single-oriented electrical steel sheets comprising antimony and having a high magnetic induction |
US4280856A (en) * | 1980-01-04 | 1981-07-28 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheets having a very high magnetic induction and a low iron loss |
EP0076109A2 (en) * | 1981-09-26 | 1983-04-06 | Kawasaki Steel Corporation | Method of producing grain-oriented silicon steel sheets having excellent magnetic properties |
DK151899B (en) * | 1973-10-31 | 1988-01-11 | Kawasaki Steel Co | PROCEDURE FOR MANUFACTURING BANDS OF ELECTRIC CONDUCTIVE STEEL ORIENTED IN A DIRECTION AND WITH A HIGH MAGNETIC INDUCTION |
DK154349B (en) * | 1974-01-15 | 1988-11-07 | Kawasaki Steel Co | PROCEDURE FOR MANUFACTURING TAPES AND ELECTRIC CONDUCTIVE STEEL ORIENTED IN A DIRECTION AND WITH HIGH MAGNETIC INDUCTION |
EP0823488A2 (en) * | 1996-08-08 | 1998-02-11 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheet |
-
1968
- 1968-04-12 US US721099A patent/US3556873A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932234A (en) * | 1972-10-13 | 1976-01-13 | Kawasaki Steel Corporation | Method for manufacturing single-oriented electrical steel sheets comprising antimony and having a high magnetic induction |
DK151899B (en) * | 1973-10-31 | 1988-01-11 | Kawasaki Steel Co | PROCEDURE FOR MANUFACTURING BANDS OF ELECTRIC CONDUCTIVE STEEL ORIENTED IN A DIRECTION AND WITH A HIGH MAGNETIC INDUCTION |
DK154349B (en) * | 1974-01-15 | 1988-11-07 | Kawasaki Steel Co | PROCEDURE FOR MANUFACTURING TAPES AND ELECTRIC CONDUCTIVE STEEL ORIENTED IN A DIRECTION AND WITH HIGH MAGNETIC INDUCTION |
US4280856A (en) * | 1980-01-04 | 1981-07-28 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheets having a very high magnetic induction and a low iron loss |
EP0076109A2 (en) * | 1981-09-26 | 1983-04-06 | Kawasaki Steel Corporation | Method of producing grain-oriented silicon steel sheets having excellent magnetic properties |
EP0076109A3 (en) * | 1981-09-26 | 1984-05-30 | Kawasaki Steel Corporation | Method of producing grain-oriented silicon steel sheets having excellent magnetic properties |
EP0823488A2 (en) * | 1996-08-08 | 1998-02-11 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheet |
EP0823488A3 (en) * | 1996-08-08 | 1998-07-15 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheet |
US5855694A (en) * | 1996-08-08 | 1999-01-05 | Kawasaki Steel Corporation | Method for producing grain-oriented silicon steel sheet |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ALLEGHENY LUDLUM CORPORATION Free format text: CHANGE OF NAME;ASSIGNOR:ALLEGHENY LUDLUM STEEL CORPORATION;REEL/FRAME:004779/0642 Effective date: 19860805 |
|
AS | Assignment |
Owner name: PITTSBURGH NATIONAL BANK Free format text: SECURITY INTEREST;ASSIGNOR:ALLEGHENY LUDLUM CORPORATION;REEL/FRAME:004855/0400 Effective date: 19861226 |
|
AS | Assignment |
Owner name: PITTSBURGH NATIONAL BANK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. RECORDED ON REEL 4855 FRAME 0400;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:005018/0050 Effective date: 19881129 |