| (19) |
 |
|
(11) |
EP 0 057 983 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
12.01.1983 Bulletin 1983/02 |
| (43) |
Date of publication A2: |
|
18.08.1982 Bulletin 1982/33 |
| (22) |
Date of filing: 18.01.1982 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT SE |
| (30) |
Priority: |
06.02.1981 US 232341
|
| (71) |
Applicant: ALLEGHENY LUDLUM STEEL CORPORATION |
|
() |
|
|
| |
|
| (54) |
Method for producing coated grain oriented silicon steel |
(57) A method for coating grain oriented silicon steel to improve its magnetic properties;
the method including the steps of preparing a melt of said silicon steel, casting
said steel, hot rolling said steel, cold rolling said steel and decarburizing said
steel, and being characterised by applying to the surface of said steel a coating
of Mg(OH)
2 and Si0
2 and thereafter final texture annealing said steel in the conventional manner with
said coating thereon.