Sughrue Mion, PLLC
Slag for electroslag remelting for copper alloy and method for producing copper alloy material
An object of the invention is to make it possible to produce a copper alloy in which the S content is reduced with no contamination with Al, which has a good casting surface and good internal properties and in which eutectic compounds are refined. The invention relates to a slag for electroslag remelting for copper alloy, including CaF2: 20 to 45% by mass, CaO: 10 to 30% by mass, SiO2: 10 to 30% by mass, LiF: 10 to 20% by mass, and ZrO2: 5 to 15% by mass with other impurities: at most 1% by mass, and satisfying a formula:17.0(LiF content+ZrO2 content)−556≦CaF2 content≦4.1(LiF content+ZrO2 content)−80.9,and the invention relates to a method for producing a copper alloy with the slag.
The Japan Steel Works Ltd.
B C C C
B22D C22B C22B C22B
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Mamoru Hitohisa Shinji
Mizusawa Yamada Tanaka