Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel strip by mechanical scribing and by employing more than one row of staggered small diameter scribing rolls arranged to scribe a different portion of the surface of the strip in a manner that the entire surface of the strip is scribed and in which each row of scribing rolls co-operate with an anvil roll to support the strip.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel sheet by mechanical scribing using a solid anvil roll and a scribing roller including scribing segments arranged side by side along an arbor. The arbor carries inflatable bladder ribs along the length of the arbor to provide uniform contact pressure exerted by scribing surfaces of the strip.

Abstract: A method and apparatus are provided for refining the domain wall spacing of a grain-oriented silicon steel strip by mechanical scribing and by employing more than one row of staggered small diameter scribing rolls arranged to scribe a different portion of the surface of the strip in a manner that the entire surface of the strip is scribed and in which each row of scribing rolls co-operate with an anvil roll to support the strip.

Abstract: A grain oriented silicon steel strip and method are provided for producing the same wherein a chevron pattern of scribe lines mechanically refines the magnetic domain wall spacings. Multiple chevron patterns are formed to extend always transversely across the strip width.

Abstract: A grain oriented silicon steel strip and method are provided for producing the same wherein a chevron pattern of scribe lines mechanically refines the magnetic domain wall spacings. Multiple chevron patterns are formed to extend always transversely across the strip width.

Abstract: A method is provided to reduce the core loss measured at frequencies of 60 Hz or higher in light-gauge, grain-oriented, silicon steel sheet or strip of less than 7 mil thickness and conventional permeability of .mu.10<1850 at 60 Hz, the method includes coating such steel with tension-inducing stress coatings in order to exert tensile stresses on the silicon steel of at least approximately 600 psi and further provides a method with the step of preparing the surfaces of the light-gage, grain-oriented, silicon steel products to support the stresses of the applied tension-inducing stress coatings in order to prevent spalling of the coatings.

Abstract: An 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.

Abstract: A method is provided for improving core-loss values of grain-oriented silicon steel after final texture annealing by boronizing the steel to levels of 0.001 to 0.009 wt. % after applying a boron-containing material to the final texture annealed steel, heating to 1850.degree. to 2200.degree. F., maintaining the steel at such temperature to infuse boron into other steel, and cooling the steel at a rate of 100.degree. F./hour or less.

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.

Abstract: Coils of strip to be annealed are placed in a furnace with their eye vertical and are heated to the annealing temperature by heating elements on the furnace side wall at the same elevation as the coils. An insulation shield is provided between the heating elements and the coil. This may be a cover surrounding the coil in spaced relationship therewith and extending the full height of the coil.

Abstract: A process for producing electromagnetic silicon steel having a cube-on-edge orientation. The process includes the steps of: preparing a melt of silicon steel, casting a strip of said steel, hot rolling, cold rolling, decarburizing, and final texture annealing. The cast strip has a thickness of from 0.15 to 1.0 inch.