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Method for supplying Sn alloy to Sn alloy plating solution, method for producing replenishment liquid for Sn alloy plating and Sn component replenishing apparatus
Method for supplying Sn alloy to Sn alloy plating solution, method for producing replenishment liquid for Sn alloy plating and Sn component replenishing apparatus
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机译:向Sn合金电镀液中供应Sn合金的方法,用于Sn合金电镀和Sn组分补充装置的产液的制备方法
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摘要
To provide a method of replenishing a Sn alloy plating solution with a Sn component, capable of improving efficiency of Sn component replenishment by preventing oxidation of a divalent tin ion to a tetravalent tin ion upon dissolving stannous oxide powder in a Sn alloy plating solution, a method of producing a replenishment solution for Sn alloy plating, and a Sn component replenishment device.SOLUTION: The method of replenishing a Sn alloy plating solution with a Sn component according to the present invention for replenishing a Sn alloy plating solution stored in a plating tank with a Sn component, comprises steps of extracting at least a part of a used Sn alloy plating solution from a plating tank, cooling the extracted Sn alloy plating solution to a temperature of 10°C or below, and dissolving stannous oxide powder of a temperature of 10°C or below in a Sn alloy plating solution in the cooled state in a dissolving tank other than the plating tank to replenish the Sn alloy plating solution with a Sn component. The Sn alloy plating solution replenished with a Sn component is fed into the plating tank .SELECTED DRAWING: Figure 1
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