GB1430434A - Steel sheet - Google Patents
Steel sheetInfo
- Publication number
- GB1430434A GB1430434A GB4748673A GB4748673A GB1430434A GB 1430434 A GB1430434 A GB 1430434A GB 4748673 A GB4748673 A GB 4748673A GB 4748673 A GB4748673 A GB 4748673A GB 1430434 A GB1430434 A GB 1430434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- hot
- temperature
- mill
- stand
- 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
-
- 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
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
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)
- Soft Magnetic Materials (AREA)
Abstract
1430434 Silicon steel sheet NIPPON STEEL CORP 11 Oct 1973 [11 Oct 1972] 47486/73 Heading B3A The production of grain-oriented electrical steel sheet comprises hot rolling a silicon steel comprising not less than 2% Si, 0À010 to 0À045% acid soluble Al and 0À0030 to 0À0095% N, hot-working the hot-rolled steel at a reduction rate of 3 to 20% at a temperature of from 700 to 900 C., and holding the steel at a temperature within the range 700 to 900 C. for not less than 2 seconds, cold rolling the steel to the required final thickness of sheet, and annealing the cold rolled sheet at a high temperature to effect secondary recrystallization. The hot rolling is effected by a multistand hot rolling mill with the hot working being effected by the last stand of the mill, preferably at a temperature of from 720 to 830 C. Alternatively, roller levellers may be used for the hot working step. The steel is held in this temperature range by delaying the cooling of the steel after it has left the last stand of the mill. In an example, a steel containing 3À05% Si, 0À023% Al, 0À0063% N was hot-rolled and given 10% reduction at the final mill stand at a finishing temperature of 830-850 C. The steel was water cooled after 4 seconds after leaving the stand and coiled at 500 C. or below. The steel was then coldrolled, subjected to decarburizing annealing in wet hydrogen at 830 C. for 3 minutes and to high temperature annealing at 1200 C. for 20 hours.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47101795A JPS5037134B2 (en) | 1972-10-11 | 1972-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1430434A true GB1430434A (en) | 1976-03-31 |
Family
ID=14310080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4748673A Expired GB1430434A (en) | 1972-10-11 | 1973-10-11 | Steel sheet |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3895974A (en) |
| JP (1) | JPS5037134B2 (en) |
| BE (1) | BE805861A (en) |
| BR (1) | BR7307945D0 (en) |
| FR (1) | FR2202943B1 (en) |
| GB (1) | GB1430434A (en) |
| IT (1) | IT995734B (en) |
| SE (1) | SE387131B (en) |
| SU (1) | SU682142A3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575314A (en) * | 2009-10-01 | 2012-07-11 | Posco公司 | Low-core-loss, high-magnetic-flux density, grain-oriented electrical steel sheet and production method therefor |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4204891A (en) * | 1978-11-27 | 1980-05-27 | Nippon Steel Corporation | Method for preventing the edge crack in a grain oriented silicon steel sheet produced from a continuously cast steel slab |
| JPS59208020A (en) * | 1983-05-12 | 1984-11-26 | Nippon Steel Corp | Manufacture of grain-oriented electrical steel sheet with small iron loss |
| JPH0730397B2 (en) * | 1990-04-13 | 1995-04-05 | 新日本製鐵株式会社 | Method for producing unidirectional electrical steel sheet with excellent magnetic properties |
| EP0684320B1 (en) * | 1994-04-26 | 2000-06-21 | LTV STEEL COMPANY, Inc. | Process of making electrical steels |
| US6217673B1 (en) | 1994-04-26 | 2001-04-17 | Ltv Steel Company, Inc. | Process of making electrical steels |
| JP3319898B2 (en) * | 1994-12-20 | 2002-09-03 | 川崎製鉄株式会社 | Method for producing non-oriented electrical steel strip with uniform magnetic properties in coil |
| US6068708A (en) * | 1998-03-10 | 2000-05-30 | Ltv Steel Company, Inc. | Process of making electrical steels having good cleanliness and magnetic properties |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2084337A (en) * | 1934-12-01 | 1937-06-22 | Allegheny Steel Co | Method of rolling magnetic material |
| US3144363A (en) * | 1961-12-14 | 1964-08-11 | Westinghouse Electric Corp | Process for producing oriented silicon steel and the product thereof |
| US3671337A (en) * | 1969-02-21 | 1972-06-20 | Nippon Steel Corp | Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics |
| BE790798A (en) * | 1971-11-04 | 1973-02-15 | Armco Steel Corp | Manufacturing process of cube-on-edge orientation silicon iron from cast slabs |
-
1972
- 1972-10-11 JP JP47101795A patent/JPS5037134B2/ja not_active Expired
-
1973
- 1973-10-03 SE SE7313462A patent/SE387131B/en unknown
- 1973-10-03 US US402908A patent/US3895974A/en not_active Expired - Lifetime
- 1973-10-09 FR FR7336038A patent/FR2202943B1/fr not_active Expired
- 1973-10-10 SU SU731962863A patent/SU682142A3/en active
- 1973-10-10 BE BE2053136A patent/BE805861A/en not_active IP Right Cessation
- 1973-10-10 IT IT29945/73A patent/IT995734B/en active
- 1973-10-11 BR BR7945/73A patent/BR7307945D0/en unknown
- 1973-10-11 GB GB4748673A patent/GB1430434A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575314A (en) * | 2009-10-01 | 2012-07-11 | Posco公司 | Low-core-loss, high-magnetic-flux density, grain-oriented electrical steel sheet and production method therefor |
| CN102575314B (en) * | 2009-10-01 | 2014-12-17 | Posco公司 | Low-core-loss, high-magnetic-flux density, grain-oriented electrical steel sheet and production method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2350774A1 (en) | 1974-04-18 |
| SE387131B (en) | 1976-08-30 |
| BE805861A (en) | 1974-02-01 |
| SU682142A3 (en) | 1979-08-25 |
| US3895974A (en) | 1975-07-22 |
| DE2350774B2 (en) | 1975-07-03 |
| FR2202943A1 (en) | 1974-05-10 |
| JPS5037134B2 (en) | 1975-12-01 |
| BR7307945D0 (en) | 1974-07-11 |
| IT995734B (en) | 1975-11-20 |
| FR2202943B1 (en) | 1978-02-17 |
| JPS4959029A (en) | 1974-06-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19931010 |