GB1297025A - - Google Patents
Info
- Publication number
- GB1297025A GB1297025A GB1297025DA GB1297025A GB 1297025 A GB1297025 A GB 1297025A GB 1297025D A GB1297025D A GB 1297025DA GB 1297025 A GB1297025 A GB 1297025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- steel
- feb
- mixture
- diffused
- 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
- 229910000831 Steel Inorganic materials 0.000 abstract 4
- 229910052710 silicon Inorganic materials 0.000 abstract 4
- 239000010959 steel Substances 0.000 abstract 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 239000010703 silicon Substances 0.000 abstract 2
- 229910000976 Electrical steel Inorganic materials 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 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
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soft Magnetic Materials (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
1297025 Electrical steel sheet BETHLEHEM STEEL CORP 4 Feb 1970 [13 Feb 1969] 5377/70 Headings C7A and C7D The steel contains not more than 0À03%C, not more than 1%Mn, and 0À5-4À5%Si, the latter being diffused through at least 50% of the sheet thickness. In the as-diffused state the steel has a grain size of not more than 50 grains/sq. in. when viewed at a magnification of Î100. The steel may be produced by coating a sheet containing not more than 0À1%C, not more than 1%Mn and not more than 2%Si, balance Fe, with a powder containing not less than 15% silicon and not more than 0À4%C, and heating to diffuse the Si. The powder may be pure silicon, a siliconiron mixture, or ferrasilicon, and is preferably compacted on to the sheet by rolling. Diffusion may be effected with the sheet in flat or coil form, in dry hydrogen or nitrogen-hydrogen mixture, at 1700-1900F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79906969A | 1969-02-13 | 1969-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1297025A true GB1297025A (en) | 1972-11-22 |
Family
ID=25174967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1297025D Expired GB1297025A (en) | 1969-02-13 | 1970-02-04 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3634148A (en) |
| BE (1) | BE745826A (en) |
| DE (1) | DE2006274A1 (en) |
| FR (1) | FR2034757A1 (en) |
| GB (1) | GB1297025A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073668A (en) * | 1976-09-15 | 1978-02-14 | Bethlehem Steel Corporation | Method of producing silicon steel strip |
| JPS5834532B2 (en) * | 1979-12-07 | 1983-07-27 | 新日本製鐵株式会社 | Finish annealing method for grain-oriented electrical steel sheets |
| DE3585686D1 (en) * | 1984-09-28 | 1992-04-23 | Nippon Kokan Kk | METHOD FOR PRODUCING THIN MAGNETIC STEEL SHEETS OF HIGH PERMEABILITY. |
| JP4484710B2 (en) * | 2002-11-11 | 2010-06-16 | ポスコ | Silica diffusion coating composition and method for producing high silicon electrical steel sheet using the same |
| JP4784611B2 (en) * | 2008-01-31 | 2011-10-05 | ブラザー工業株式会社 | Method for manufacturing piezoelectric actuator and method for manufacturing liquid transfer device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191219461A (en) * | 1912-08-24 | 1913-08-21 | Giulio Sirovich | Improvements in or relating to the Cementation of Metals. |
| US2109485A (en) * | 1936-06-23 | 1938-03-01 | Globe Steel Tubes Co | Impregnation of metals with silicon |
| DE1122972B (en) * | 1954-10-20 | 1962-02-01 | Siemens Ag | Process for the elimination of the erosion of the iron-silicon sheets to be used for the construction of the iron body of electrical machines and apparatus |
| DE1237154B (en) * | 1961-11-29 | 1967-03-23 | Licentia Gmbh | Process for the production of hot and cold rolled Fe-Si electrical steel sheets |
| GB1067126A (en) * | 1963-07-24 | 1967-05-03 | Bethlehem Steel Corp | Forming of chromium containing coatings on strip |
| GB1083290A (en) * | 1964-12-18 | 1967-09-13 | Licentia Gmbh | Method of improving the magnetic properties of silicon steel electrical sheets |
| US3423253A (en) * | 1968-02-23 | 1969-01-21 | Allegheny Ludlum Steel | Method of increasing the silicon content of wrought grain oriented silicon steel |
-
1969
- 1969-02-13 US US799069A patent/US3634148A/en not_active Expired - Lifetime
-
1970
- 1970-02-04 GB GB1297025D patent/GB1297025A/en not_active Expired
- 1970-02-11 BE BE745826D patent/BE745826A/en unknown
- 1970-02-12 DE DE19702006274 patent/DE2006274A1/en active Pending
- 1970-02-13 FR FR7005203A patent/FR2034757A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE2006274A1 (en) | 1970-08-20 |
| US3634148A (en) | 1972-01-11 |
| BE745826A (en) | 1970-08-11 |
| FR2034757A1 (en) | 1970-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |