Method and apparatus for reducing core losses of grain-oriented silicon steel
AssigneeAllegheny Ludlum Steel Corporation
InventorJames G. Benford
Life of this patent
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Abstract
A method and apparatus for scribing grain-oriented silicon steel to improve the core loss thereof is provided. The method comprises passing the final gauge steel after cold rolling through a roll pass defined by an anvil roll and a scribing roll having a surface with a plurality of projections thereon with said projections being generally in a direction of the roll axis; the anvil roll is constructed from a material that is relatively more elastic than the material from which said scribing roll is constructed. Preferably the scribing roll is constructed from steel and the anvil roll is constructed from rubber.
Claims11
A method for improving the core loss of grain-oriented silicon steel, which has been cold rolled to final gauge, said method comprising scribing said steel after said cold rolling in a direction generally transverse to the rolling direction;
- said scribing being effected by passing said steel after said cold rolling through a roll pass defined by an anvil roll and a scribing roll having a roll surface with a plurality of projections thereon and said anvil roll being constructed from a material that is relatively more elastic than the material from which said scribing roll is constructed.
A method for improving the core loss of grain-oriented silicon steel which has been cold rolled to final gauge, decarburized, coated and final texture annealed;
- said method comprising scribing said steel in a direction substantially transverse to the rolling direction, said scribing being effected by passing said steel after said cold rolling through a roll pass defined by an anvil roll and a scribing roll having a roll surface with a plurality of projections thereon with said projections being in a direction substantially parallel to the axis of said roll and said anvil being constructed from material having a shear modulus of elasticity of 2 to 5.times.10.sup.2 psi and said scribing roll being constructed from metal.
Dependencies are inferred from the claim text.