Abstract: A continuous casting mold includes a metallic substrate, an upper portion where the meniscus of molten metal is located during operation, a lower portion having a cross-sectional area smaller than the upper portion, the upper portion and lower portion being joined by a smooth curved surface, a coating of metal dissimilar to the substrate metal, highly resistant to wear, and extending over the curved surface, the curved surface having a radius of curvature at least fifteen to twenty-five times the thickness of the dissimilar metal coating, whereby the dissimilar metal will adhere strongly to the substrate to resist scratching and abrasion to thereby produce a smooth mold piece.

Abstract: In case that the surface of a mold for continuous casting of steel made of copper or copper alloy having at least partially nickel or nickel-base alloy plated thereon is injured, said surface is abraded without complete removal of said plated layer, the resulting exposed surface is dipped with concentrated strong acid for activation, and thereafter it is repaired by plating nickel or nickel-base alloy thereon.

Abstract: Apparatus is provided for plating a portion of an object. The apparatus has a cut out section in one of its side walls. Engagement is maintained between the object and the cut out edges, through a sealing means and adjustable set screw means. This forms a liquid-tight tank in which is disposed an anode and plating liquid. The anode is electrically connected for plating on the object.

Abstract: In a continuous casting mold of a copper alloy havng a nickel layer plated on the mold cavity surface, wherein an alloy layer of nickel containing one of Co, Fe and Mn and 3-5 mm thickness replaces the Ni layer.