Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1989-04-13
1989-11-07
Sheehan, John P.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148113, H01F 104
Patent
active
048789593
ABSTRACT:
A method is provided for producing cube-on-edge grain-oriented silicon steel by producing 3 to 10 ppm boron and a manganese-to-sulfur and/or selenium ratio of at least 2.5 in a final gauge steel strip prior to final texture annealing and including a two-stage cold reduction wherein the final cold reduction is less than 75% to provide a steel having improved magnetic properties with a secondary grain size of less than 10 mm and a permeability of 1850 or more at 10 oersteds.
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More Anthony P.
Stroble Carl P.
Allegheny Ludlum Corporation
Sheehan John P.
Viccaro Patrick J.
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