GB403950A - Process for preparing silicon steel sheets for electrical purposes - Google Patents
Process for preparing silicon steel sheets for electrical purposesInfo
- Publication number
- GB403950A GB403950A GB11650/32A GB1165032A GB403950A GB 403950 A GB403950 A GB 403950A GB 11650/32 A GB11650/32 A GB 11650/32A GB 1165032 A GB1165032 A GB 1165032A GB 403950 A GB403950 A GB 403950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silicon steel
- steel sheets
- preparing silicon
- electrical purposes
- furnace
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
In a process for treating silicon steel sheets as described in the parent Specification, the annealing prior to the cold rolling is omitted. The sheets after hot rolling, pickling and cold rolling are annealed at 1925 DEG F., cooled slowly in the furnace to a maximum temperature of 1000 DEG F., removed therefrom, covered and then allowed to cool down to 500-250 DEG F. before exposure to the air. The annealing may comprise heating to less than 1600 DEG F. and then raising the temperature to 1925 DEG F. and an oxidizing or reducing atmosphere may be maintained in the furnace.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US403950XA | 1931-05-18 | 1931-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403950A true GB403950A (en) | 1933-12-22 |
Family
ID=21910750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11650/32A Expired GB403950A (en) | 1931-05-18 | 1932-04-22 | Process for preparing silicon steel sheets for electrical purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB403950A (en) |
-
1932
- 1932-04-22 GB GB11650/32A patent/GB403950A/en not_active Expired
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