Claims
- 1. The method of producing silicon steel strip for magnetic purposes from slabs comprising the steps of:
- (a) heating the slabs to a temperature above 2200.degree. F., to stabilize MnS, and immediately rolling said slabs into strip in a planetary mill of the Zendzimer type to a thickness range of about 0.060 to 0.150 inch while maintaining the temperature in the temperature range 2100.degree. F. to 2200.degree. F., during said rolling, and
- (b) quenching the strip to precipitate MnS.
- 2. The method of producing silicon steel strip for magnetic purposes from slabs comprising the steps of:
- (a) heating the slabs to a temperature above 2200.degree. F., to stabilize MnS, and immediately rolling said slabs into strip in a planetary mill of the Platzer type to a thickness range of about 0.060 to 0.150 inch while maintaining the temperature in the temperature range 2100.degree. F. to 2200.degree. F., during said rolling, and
- (b) quenching said strip to precipitate MnS.
- 3. The method of producing silicon steel strip for magnetic purposes from slabs comprising the steps of:
- (a) heating the slabs to a temperature above 2200.degree. F. to solubilize MnS; and
- (b) rolling the heated slabs in a planetary mill to a thickness range of about 0.060 to about 0.150 inch while maintaining the temperature in the range 2100.degree. F. to 2200.degree. F.; and
- (c) quenching the strip to precipitate MnS.
- 4. The method of producing silicon steel strip from slabs as claimed in claim 3 wherein the steel is cooled in the planetary mill to maintain a temperature range of 2100.degree. F. to 2200.degree. F. and quenched to 1700.degree. F.
- 5. The method of producing silicon steel strip from slabs as claimed in claim 3 wherein the slabs are reduced to 0.080 inch in the planetary mill.
Parent Case Info
This application is a continuation of my copending application Ser. No. 680,527, filed Apr. 26, 1976, now abandoned, which was a division of my copending application Ser. No. 493,531, filed Aug. 1, 1974 (now U.S. Pat. No. 3,969,162, issued July 13, 1976), which was, in turn, a division of my then copending application Ser. No. 239,538, filed Mar. 30, 1972 (now U.S. Pat. No. 3,843,422 issued Oct. 22, 1974).
US Referenced Citations (7)
Non-Patent Literature Citations (1)
Entry |
McGannon, H.; Making, Shaping and Treating of Steel, Pittsburgh, (U.S. Steel), 1964, pp. 571-573. |
Divisions (2)
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Number |
Date |
Country |
Parent |
493531 |
Aug 1974 |
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Parent |
239538 |
Mar 1972 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
680527 |
Apr 1976 |
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