Copper-based alloy casting in which grains are refined

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United States of America

PATENT NO 10570483
APP PUB NO 20190040498A1
SERIAL NO

16033689

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Abstract

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A copper-based alloy casting includes 69 to 88% of Cu, 2 to 5% of Si, 0.0005 to 0.04% of Zr, 0.01 to 0.25% of P by mass, and a remainder including Zn and inevitable impurities, and satisfies 60≤Cu−3.5×Si−3×P≤71. Further, mean grain size after melt-solidification is 100 μm or less, and α, κ and γ-phases occupy more than 80% of phase structure. Furthermore, the copper-based alloy casting according to the invention can further include at least one element selected from a group consisting of 0.001 to 0.2% of Mg, 0.003 to 0.1% of B, 0.0002 to 0.01% of C, 0.001 to 0.2% of Ti and 0.01 to 0.3% of rare earth element.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI SHINDOH CO LTDTOKYO 140-8550

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oishi, Keiichiro Osaka, JP 78 383

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