US3855020A - Processing for high permeability silicon steel comprising copper - Google Patents
Processing for high permeability silicon steel comprising copper Download PDFInfo
- Publication number
- US3855020A US3855020A US00357974A US35797473A US3855020A US 3855020 A US3855020 A US 3855020A US 00357974 A US00357974 A US 00357974A US 35797473 A US35797473 A US 35797473A US 3855020 A US3855020 A US 3855020A
- Authority
- US
- United States
- Prior art keywords
- steel
- temperature
- cooled
- improvement according
- final
- 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
Links
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 21
- 230000035699 permeability Effects 0.000 title claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 title claims description 14
- 239000010949 copper Substances 0.000 title claims description 14
- 238000012545 processing Methods 0.000 title claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000005097 cold rolling Methods 0.000 claims abstract description 32
- 238000000137 annealing Methods 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000006872 improvement Effects 0.000 claims description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000010703 silicon Substances 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000011593 sulfur Substances 0.000 claims description 13
- 229910052717 sulfur Inorganic materials 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims description 12
- 239000011572 manganese Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- FYYOIAAXQVWBQU-UHFFFAOYSA-N [Mn]S[Cu] Chemical compound [Mn]S[Cu] FYYOIAAXQVWBQU-UHFFFAOYSA-N 0.000 description 3
- 239000012267 brine Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following hot rolling
Definitions
- ABSTRACT A process for producing silicon steel having a cubeon-edge orientation and a permeability of at least 1850 (6/0,) at 10 oersteds, which includes the steps of: annealing silicon steel prior to a final cold roll at a temperature of from 1400 to 2150F; cooling the steel from a temperature below 1700F and above 750F to a temperature at least as low as 500F at a rate which is faster than a still air cool and from its maximum annealing temperature to the temperature below 1700F and above 750F at a rate which is no faster than a still air cool; and cold rolling the steel at a reduction of at least 80 percent.
- the present invention relates to a process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1850 (G/O,.) at 10 oersteds.
- Oriented silicon steels containing 2.60 to 4.0 percent silicon are generally produced by processes which involve hot rolling, av double cold reduction, an anneal before each cold roll and a high temperature texture anneal. Characterizing these steels are permeabilities at 10 oersteds of from about 1790 to 1840 (Ci/ In recent years a number of patents have disclosed silicon steels with permeabilities in excess of 1850 (6/0 at 10 oersteds. Of these, U.S. Pat. Nos.
- Described herein is another, and improved method for producing silicon steel having a cube-on-edge orientation and a permeability of at least 1850 (G/O at oersted from steel of a particular chemistry.
- the method includes the steps of: annealing silicon steel prior to a final cold roll at a temperature of from l400 to 2150F; cooling the steel from a temperature below 1700F and above 750F to a temperature at least as low as 500F at a rate which is faster than a still air cool and from its maximum annealing temperature to the temperature below 1700F and above 750F at a rate which is no faster than a still air cool; and cold rolling the steel at a reduction of at least 80 percent.
- the present invention provides a method for producing silicon steel having a cubeaon-edge orientation and a permeability of at least 1850 (6/0 and preferably at least 1900 (G/O at 10 oersteds.
- Involved therein are the steps of: preparing a melt of silicon steel having, by weight, up to 0.07% carbon, from 2.60 to 4.0% silicon, from-0.03% to 0.24% manganese, from 0.01 to 0.07% sulfur, from 0.015 to 0.04% aluminum, up to 0.02% nitrogen, and from 0.1 to 0.5% copper; casting the steel; hot rolling the steel into a hot rolled band; subjecting the steel to at least one cold rolling and generally two; subjecting the steel to a final annealing prior to the final cold rolling; decarburizing the steel; and
- Preferred conditions include annealing at a temperature of from l800 to 2125F, cooling at a rate faster than a still air cool from a temperature below 1600F and above 1200F, and cold rolling at a reduction of at least percent.
- Illustrative means are gaseous streams and liquid quenching mediums.
- still air. cools include those wherein the steel is cooled in a static atmosphere as well as those wherein there is relative motion between the atmosphere and the steel, as in a continuous processing line, so long as there is no deliberate intention to cause the motion for cooling purposes.
- all gaseous atmospheres are considered to have the same cooling effect as air.
- the steel melt must include silicon, aluminum, manganese, sulfur and copper. Silicon is necessary as it increases the steels resistivity, decreases its magnet0- striction, decreases its magnetocrystalline anisotropy and hence decreases its core less. Aluminum, manganese and sulfur are necessary as they form inhibitors which are essential to controlling the steels orientation and its properties which are dependent thereon.
- aluminum combines with nitrogen, in the steel or from the atmosphere to form aluminum nitride
- manganese combines with sulfur to form manganese sulfide and/or manganese copper sulfide; and these compounds act so as to inhibit normal grain growth during the final texture anneal, while at the same time, aiding in the development of secondary recrystallized grains having the desired cube-on-edge orientation.
- Copper in addition to possibly forming manganese copper sulfide, is believed to be beneficial in that it is hypothesized that copper can lower the annealing temperature, lower the temperature from which the rapid cool can occur, improve rollability, simplify melting and relax annealing atmosphere requirements. Alloys with more than 0.15 percent copper have been successfully annealed prior to the final cold rolling at temperatures of from l400 to l700F.
- a steel in which the process of the present invention is particularly adaptable to consist essentially of, by weight, from 0.02 to 0.07% carbon, from 2.60 to 3.5% silicon, a manganese equivalent of from 0.05 to 0.24% as expressed by an equivalency equation of %Mn (0.1 to 0.25) X %Cu, from 0.0l to 0.5% sulfur, from 0.0 l 5 to 0.04% aluminum, from 0.0030 to 0.0090% nitrogen, from 0.1 to 0.3% copper, balance iron and residuals; and wherein the ratio of manganese equivalent to sulfur is in the range of from 2.0 to 4.75.
- the steel has its chemistry balanced so as to produce a highly beneficial structure when processed according to the present invention.
- the anneal conditions the steel for cold rolling and provides an operation during which inhibitors can form; and that the slow cool to a temperature below 1700F and [or the use of annealing temperatures in the lower part of the annealing temperature range, increase the uniformity in which the inhibitors are distributed, as essentially only ferrite phase is present in the steel at temperatures below l700F, contrasted to the presence of austenite and ferrite phases and different solubilities for the inhibiting elements in each phase 'at somewhat higher temperatures.
- the primary inhibitors are aluminum nitride and manganese sulfide and/or manganese copper sulfide. No criticality is placed upon the particular annealing atmosphere. Illustrative atmospheres therefore include nitrogen; reducing gases such as hydrogen; inert gases such as argon; air; and mixtures thereof.
- EXAMPLE 1 Twelve samples (Samples l 12) of silicon steel were cast and processed into silicon steel having a cube-onedge orientation from two heats (l-leats A and B) of BOF silicon steel. The chemistry of the heats, that is Heats A and B, appears hereinbelow in Table I.
- Cooling Method I was applied to samples 1, 4, 7 and 10, and is one in which the samples are cooled in a welded box. it is a cool which is slower than an air cool. Samples 1, 4, 7 and 10 took approximately minutes to cool to 750F. Cooling Method [I was applied to samples 2, 5,
- Samples 1 12 were tested for permeability and core less. The results of the tests appear hereinbelow in Table II. Results have been broken up into four groups so that only samples from the same heat and'coil are directly compared. Samples l, 2 and 3 are from the same heat and coil and form one group, as do samples 4, 5 and 6, samples 7, Band 9, and samples 10, l l and 12.
- samples 3, 6, 9 15 and Sample 15 had a lower core loss than did and 12 had lower core losses than did samples 2, 5, 8 ple and 11, and samples 2, 5, 8 and 11 had lower core 10 losses than did samples 1, 4, 7 and 10.
- samples 3, 6, 9 15 and Sample 15 had a lower core loss than did and 12 had lower core losses than did samples 2, 5, 8 ple and 11, and samples 2, 5, 8 and 11 had lower core 10 losses than did samples 1, 4, 7 and 10.
- said melt consisting essentially of, by weight, up
- Example II or at least two cold rollings as in Example said steel is cooled from a temperature below l600F l.
- Sample 16 was annealed in nitrogen for 1 hour at and above 1200F to a temperature at least as low as 1475F and cooled therefrom to a temperature below 500F at a rate which is faster than a still air cool and 500F at a rate faster than a still air cool; and had a perfrom its maximum annealing temperature to said temmeability in excess of 1900 (6/0,) at 10 0,..
- sample 14 which was annealed as was samwhich is no faster than a still air cool.
- said steel consists essentially of, by weight, from 0.02 to 0.07% carbon, from 2.60 to 3.5% silicon, a manganese equivalent of from 0.05 to 0.24% as expressed by an equivalency equation of Mn (O.l to 0.25) X Cu, from 0.01 to 0.05% sulfur, from 0.015 to 0.04% aluminum, from 0.0030 to 0.0090% nitrogen, from O.l to 0.3% copper, balance iron and residuals; and wherein the ratio of manganese equivalent to sulfur is in the range of from 2.0 to 4.75.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Metal Rolling (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00357974A US3855020A (en) | 1973-05-07 | 1973-05-07 | Processing for high permeability silicon steel comprising copper |
| AU67250/74A AU474407B2 (en) | 1973-05-07 | 1974-03-28 | Processing for high permeability silicon steel |
| CA198,056A CA1018440A (en) | 1973-05-07 | 1974-04-18 | Processing for high permeability silicon steel |
| FR7413793A FR2228855B1 (fr) | 1973-05-07 | 1974-04-19 | |
| BE143468A BE814021A (fr) | 1973-05-07 | 1974-04-22 | Procede pour la production d'acier au silicium a permeabilite elevee |
| IT50771/74A IT1011367B (it) | 1973-05-07 | 1974-05-03 | Procedimento per la produzione di acciaio al silicio ad elevata permeabilita |
| BR3628/74A BR7403628D0 (pt) | 1973-05-07 | 1974-05-06 | Processo para a producao de aco silicio eletro-magnetico |
| GB1980374A GB1428901A (en) | 1973-05-07 | 1974-05-06 | Processing for high permeability silicon steel |
| ES426046A ES426046A1 (es) | 1973-05-07 | 1974-05-07 | Perfeccionamientos en los procesos para producir acero al silicio electromagnetico de permeabilidad elevada. |
| DE2422075A DE2422075B2 (de) | 1973-05-07 | 1974-05-07 | Verfahren zum Herstellen von Elektrostahlblech mit hoher Permeabilität |
| RO7478692A RO68035A (fr) | 1973-05-07 | 1974-05-07 | Procede pour l'obtention des bandes d'acier au silicium a permeabilite magnetique augmentee |
| JP49049840A JPS5745292B2 (fr) | 1973-05-07 | 1974-05-07 | |
| PL1974170882A PL90317B1 (fr) | 1973-05-07 | 1974-05-07 | |
| SE7406095A SE415197B (sv) | 1973-05-07 | 1974-05-07 | Framstellning av kiselstal med hog permeabilitet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00357974A US3855020A (en) | 1973-05-07 | 1973-05-07 | Processing for high permeability silicon steel comprising copper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3855020A true US3855020A (en) | 1974-12-17 |
Family
ID=23407796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00357974A Expired - Lifetime US3855020A (en) | 1973-05-07 | 1973-05-07 | Processing for high permeability silicon steel comprising copper |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3855020A (fr) |
| JP (1) | JPS5745292B2 (fr) |
| AU (1) | AU474407B2 (fr) |
| BE (1) | BE814021A (fr) |
| BR (1) | BR7403628D0 (fr) |
| CA (1) | CA1018440A (fr) |
| DE (1) | DE2422075B2 (fr) |
| ES (1) | ES426046A1 (fr) |
| FR (1) | FR2228855B1 (fr) |
| GB (1) | GB1428901A (fr) |
| IT (1) | IT1011367B (fr) |
| PL (1) | PL90317B1 (fr) |
| RO (1) | RO68035A (fr) |
| SE (1) | SE415197B (fr) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3925115A (en) * | 1974-11-18 | 1975-12-09 | Allegheny Ludlum Ind Inc | Process employing cooling in a static atmosphere for high permeability silicon steel comprising copper |
| US3929522A (en) * | 1974-11-18 | 1975-12-30 | Allegheny Ludlum Ind Inc | Process involving cooling in a static atmosphere for high permeability silicon steel comprising copper |
| US4118255A (en) * | 1975-08-01 | 1978-10-03 | Centro Sperimentale Metallurgico S.P.A | Process for the production of a silicon steel strip with high magnetic characteristics |
| US4319936A (en) * | 1980-12-08 | 1982-03-16 | Armco Inc. | Process for production of oriented silicon steel |
| US4416707A (en) * | 1981-09-14 | 1983-11-22 | Westinghouse Electric Corp. | Secondary recrystallized oriented low-alloy iron |
| EP0101321A2 (fr) * | 1982-08-18 | 1984-02-22 | Kawasaki Steel Corporation | Procédé pour la production de tôle ou de bande en acier au silicium à grain orienté présentant une haute induction magnétique et faible perte dans le fer |
| US4478653A (en) * | 1983-03-10 | 1984-10-23 | Armco Inc. | Process for producing grain-oriented silicon steel |
| US4595426A (en) * | 1985-03-07 | 1986-06-17 | Nippon Steel Corporation | Grain-oriented silicon steel sheet and process for producing the same |
| US4692193A (en) * | 1984-10-31 | 1987-09-08 | Nippon Steel Corporation | Process for producing a grain-oriented electrical steel sheet having a low watt loss |
| US4753692A (en) * | 1981-08-05 | 1988-06-28 | Nippon Steel Corporation | Grain-oriented electromagnetic steel sheet and process for producing the same |
| EP0537398A1 (fr) † | 1990-07-09 | 1993-04-21 | ARMCO Inc. | Procédé pour la fabrication d'acier au silicium ordinaire à grains orientés sans recuit de la tôle laminée à chaud |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5277817A (en) * | 1975-12-24 | 1977-06-30 | Kawasaki Steel Co | Production of mono anisotropic magnetic steel sheets |
| JPS58121185U (ja) * | 1982-01-19 | 1983-08-18 | ミツミ電機株式会社 | 短絡保護回路 |
| JPS5925958A (ja) * | 1982-08-04 | 1984-02-10 | Nippon Steel Corp | 一方向性珪素鋼板およびその製造方法 |
| JPS59208020A (ja) * | 1983-05-12 | 1984-11-26 | Nippon Steel Corp | 低鉄損一方向性電磁鋼板の製造方法 |
| DE69128624T3 (de) * | 1991-10-21 | 2002-05-29 | Armco Inc | Verfahren zum Herstellen von normal kornorientiertem Stahl mit hohem Silizium- und niedrigem Kohlenstoffgehalt |
| JP2620438B2 (ja) * | 1991-10-28 | 1997-06-11 | 新日本製鐵株式会社 | 磁束密度の高い一方向性電磁鋼板の製造方法 |
| JP2892571B2 (ja) * | 1993-05-19 | 1999-05-17 | 川崎汽船 株式会社 | 鉄系金属用除錆剤 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1919983A (en) * | 1932-03-01 | 1933-07-25 | Gen Electric | Method for producing low loss nonaging silicon steel sheets |
| US2209686A (en) * | 1938-07-25 | 1940-07-30 | Electro Metallurg Co | Sheared electrical steel sheet |
| US3151005A (en) * | 1959-07-09 | 1964-09-29 | United States Steel Corp | Method of producing grain-oriented electrical steel |
| US3159511A (en) * | 1956-11-08 | 1964-12-01 | Yawata Iron & Steel Co | Process of producing single-oriented silicon steel |
| US3266955A (en) * | 1962-12-28 | 1966-08-16 | Yawata Iron & Steel Co | Process for producing silicon steel sheet having (100) plane in the rolling plane |
| US3287184A (en) * | 1963-10-22 | 1966-11-22 | Bethlehem Steel Corp | Method of producing low carbon electrical sheet steel |
| US3632456A (en) * | 1968-04-27 | 1972-01-04 | Nippon Steel Corp | Method for producing an electromagnetic steel sheet of a thin sheet thickness having a high-magnetic induction |
| US3671337A (en) * | 1969-02-21 | 1972-06-20 | Nippon Steel Corp | Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics |
| US3764406A (en) * | 1971-11-04 | 1973-10-09 | Armco Steel Corp | Hot working method of producing cubeon edge oriented silicon iron from cast slabs |
| US3770517A (en) * | 1972-03-06 | 1973-11-06 | Allegheny Ludlum Ind Inc | Method of producing substantially non-oriented silicon steel strip by three-stage cold rolling |
-
1973
- 1973-05-07 US US00357974A patent/US3855020A/en not_active Expired - Lifetime
-
1974
- 1974-03-28 AU AU67250/74A patent/AU474407B2/en not_active Expired
- 1974-04-18 CA CA198,056A patent/CA1018440A/en not_active Expired
- 1974-04-19 FR FR7413793A patent/FR2228855B1/fr not_active Expired
- 1974-04-22 BE BE143468A patent/BE814021A/fr not_active IP Right Cessation
- 1974-05-03 IT IT50771/74A patent/IT1011367B/it active
- 1974-05-06 GB GB1980374A patent/GB1428901A/en not_active Expired
- 1974-05-06 BR BR3628/74A patent/BR7403628D0/pt unknown
- 1974-05-07 SE SE7406095A patent/SE415197B/xx unknown
- 1974-05-07 ES ES426046A patent/ES426046A1/es not_active Expired
- 1974-05-07 PL PL1974170882A patent/PL90317B1/pl unknown
- 1974-05-07 JP JP49049840A patent/JPS5745292B2/ja not_active Expired
- 1974-05-07 DE DE2422075A patent/DE2422075B2/de not_active Ceased
- 1974-05-07 RO RO7478692A patent/RO68035A/fr unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1919983A (en) * | 1932-03-01 | 1933-07-25 | Gen Electric | Method for producing low loss nonaging silicon steel sheets |
| US2209686A (en) * | 1938-07-25 | 1940-07-30 | Electro Metallurg Co | Sheared electrical steel sheet |
| US3159511A (en) * | 1956-11-08 | 1964-12-01 | Yawata Iron & Steel Co | Process of producing single-oriented silicon steel |
| US3151005A (en) * | 1959-07-09 | 1964-09-29 | United States Steel Corp | Method of producing grain-oriented electrical steel |
| US3266955A (en) * | 1962-12-28 | 1966-08-16 | Yawata Iron & Steel Co | Process for producing silicon steel sheet having (100) plane in the rolling plane |
| US3287184A (en) * | 1963-10-22 | 1966-11-22 | Bethlehem Steel Corp | Method of producing low carbon electrical sheet steel |
| US3632456A (en) * | 1968-04-27 | 1972-01-04 | Nippon Steel Corp | Method for producing an electromagnetic steel sheet of a thin sheet thickness having a high-magnetic induction |
| US3671337A (en) * | 1969-02-21 | 1972-06-20 | Nippon Steel Corp | Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics |
| US3764406A (en) * | 1971-11-04 | 1973-10-09 | Armco Steel Corp | Hot working method of producing cubeon edge oriented silicon iron from cast slabs |
| US3770517A (en) * | 1972-03-06 | 1973-11-06 | Allegheny Ludlum Ind Inc | Method of producing substantially non-oriented silicon steel strip by three-stage cold rolling |
Non-Patent Citations (2)
| Title |
|---|
| Kussmann, A., et al.; Gekupferter Stahl Fur . . . Transform.; in Stahl und Eisen, 50, (1930) pp. 1194 1197, (TS 30057). * |
| Saito, A.; Effect of Minor Elements . . . in Silicon Steel; in Nippon Kinzokv, 27, (1963) pp. 191 195. * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929522A (en) * | 1974-11-18 | 1975-12-30 | Allegheny Ludlum Ind Inc | Process involving cooling in a static atmosphere for high permeability silicon steel comprising copper |
| US3925115A (en) * | 1974-11-18 | 1975-12-09 | Allegheny Ludlum Ind Inc | Process employing cooling in a static atmosphere for high permeability silicon steel comprising copper |
| US4118255A (en) * | 1975-08-01 | 1978-10-03 | Centro Sperimentale Metallurgico S.P.A | Process for the production of a silicon steel strip with high magnetic characteristics |
| US4319936A (en) * | 1980-12-08 | 1982-03-16 | Armco Inc. | Process for production of oriented silicon steel |
| US4753692A (en) * | 1981-08-05 | 1988-06-28 | Nippon Steel Corporation | Grain-oriented electromagnetic steel sheet and process for producing the same |
| US4863532A (en) * | 1981-08-05 | 1989-09-05 | Nippon Steel Corporation | Grain-oriented electromagnetic steel sheet |
| US4416707A (en) * | 1981-09-14 | 1983-11-22 | Westinghouse Electric Corp. | Secondary recrystallized oriented low-alloy iron |
| US4469533A (en) * | 1982-08-18 | 1984-09-04 | Kawasaki Steel Corporation | Method of producing grain oriented silicon steel sheets or strips having high magnetic induction and low iron loss |
| EP0101321A3 (en) * | 1982-08-18 | 1985-11-06 | Kawasaki Steel Corporation | Method of producing grain oriented silicon steel sheets or strips having high magnetic induction and low iron loss |
| EP0101321A2 (fr) * | 1982-08-18 | 1984-02-22 | Kawasaki Steel Corporation | Procédé pour la production de tôle ou de bande en acier au silicium à grain orienté présentant une haute induction magnétique et faible perte dans le fer |
| US4478653A (en) * | 1983-03-10 | 1984-10-23 | Armco Inc. | Process for producing grain-oriented silicon steel |
| US4692193A (en) * | 1984-10-31 | 1987-09-08 | Nippon Steel Corporation | Process for producing a grain-oriented electrical steel sheet having a low watt loss |
| US4595426A (en) * | 1985-03-07 | 1986-06-17 | Nippon Steel Corporation | Grain-oriented silicon steel sheet and process for producing the same |
| EP0537398A1 (fr) † | 1990-07-09 | 1993-04-21 | ARMCO Inc. | Procédé pour la fabrication d'acier au silicium ordinaire à grains orientés sans recuit de la tôle laminée à chaud |
| EP0537398B2 (fr) † | 1990-07-09 | 2001-05-16 | ARMCO Inc. | Procédé pour la fabrication d'acier au silicium ordinaire à grains orientés sans recuit de la tôle laminée à chaud |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2228855A1 (fr) | 1974-12-06 |
| AU6725074A (en) | 1975-10-02 |
| DE2422075A1 (de) | 1974-11-28 |
| JPS5745292B2 (fr) | 1982-09-27 |
| RO68035A (fr) | 1981-11-04 |
| BR7403628D0 (pt) | 1974-11-19 |
| JPS5015727A (fr) | 1975-02-19 |
| SE415197B (sv) | 1980-09-15 |
| AU474407B2 (en) | 1976-07-22 |
| CA1018440A (en) | 1977-10-04 |
| BE814021A (fr) | 1974-10-22 |
| PL90317B1 (fr) | 1977-01-31 |
| FR2228855B1 (fr) | 1979-02-16 |
| DE2422075B2 (de) | 1975-12-11 |
| ES426046A1 (es) | 1976-07-01 |
| IT1011367B (it) | 1977-01-20 |
| GB1428901A (en) | 1976-03-24 |
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