METHOD FOR REGULATING EXTERNAL SURFACE OF CONTINUOUS CASTING MOLD MADE OF COPPER OR COPPER ALLOY INCLUDING NICKEL PLATING STAGE AND NICKEL REMOVING STAGE

Japanese Patent JP3955933

B2

PROBLEM TO BE SOLVED: To provide an economical mold with less pollution by regulating the optimum quality of a wall surface of a mold for continuous casting of the metal consisting of copper or copper alloy by adhering a nickel layer containing a stage to periodically regenerate a nickel layer.
SOLUTION: The surface is prepared by a series of preparations comprising the cleaning operation of a non-coated surface of a mold element, the pickling operation in the oxidizing acid medium, and the gloss providing operation (a), the mold element is arranged as a cathode in the electrolyte consisting of the sulfamine acid nickel solution containing nickel of 60-100g/l, nickel is plated on the non-coated surface through the electroplating (b), after the mold is used, the mold element is arranged in the sulfamine acid nickel solution in which sulfamine acid of 20-80g/l is contained and pH is ≤2, and a part of or a whole of nickel is removed from the surface through the electrolysis (c), and nickel plating is newly performed on the surface after a non-coated copper surface is prepared in the above preparation as necessary (d).

Jean-Claude Catonne
Christian alley
Remy Nicole
Gerard Léson

JP11194197A

August 08, 2007

April 14, 1997

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ARCELOR France

B22D11/04; B22D11/057; C25F5/00; B22D11/059; B22D11/06; C23F17/00; C25D3/12; C25D5/24; C25D5/34; (IPC1-7): B22D11/04; B22D11/04; B22D11/04; C25D5/24

JP2075447A
JP62033046A
JP57019128A
JP64047900A
JP62257000A
JP4116191A
JP51066238A
JP2160145A
JP60145247A

Takashi Koshiba

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