Copper alloy casting having excellent machinability, strength, wear resistance and corrosion resistance and method of casting the same
AssigneeSanbo Shindo Kogyo Kabushiki Kaisha
InventorKeiichiro Oishi
Life of this patent
Estimating the term…
Abstract
A copper alloy casting with excellent machinability, strength, wear resistance and corrosion resistance contains Sn: 0.5 to 15 mass %; Zr: 0.001 to 0.049 mass %; P: 0.01 to 0.35 mass %; one or more elements selected from Pb: 0.01 to 15 mass %, Bi: 0.01 to 15 mass %, Se: 0.01 to 1.2 mass %, and Te: 0.05 to 1.2 mass %; and Cu: 73 mass % or more serving as a remainder. In this case, f1=[P]/[Zr]=0.5 to 100, f2=3[Sn]/[Zr]=300 to 15000, and f3=3[Sn]/[P]=40 to 2500 (the content of an element ‘a’ is expressed as [a] mass %). The total content of α, γ and δ-phases is 95% or more, and the mean grain size is 300 μm or less.
Claims32
A copper alloy casting with excellent machinability, strength, wear resistance and corrosion resistance containing:
- Sn:
- 0.5 to 15 mass %;
- Zr:
- 0.001 to 0.049 mass %;
- P:
- 0.01 to 0.35 mass %;
- one or more elements selected from Pb:
- 0.01 to 15 mass %, Bi:
- 0.01 to 15 mass %, Se:
- 0.01 to 1.2 mass %, and Te:
- 0.05 to 1.2 mass %;
- and Cu:
- 73 mass % or more serving as a remainder,
- wherein f1=[P]/[Zr]=0.5 to 100, f2=3[Sn]/[Zr]=300 to 15000, and f3=3[Sn]/[P]=40 to 2500, wherein the content of each element ‘a’ is expressed as [a] mass %, the total content of α, γ and δ-phases is 95% or more, and the mean grain size is 300 μm or less.
A copper alloy casting with excellent machinability, strength, wear resistance and corrosion resistance containing:
- Sn:
- 0.5 to 15 mass %;
- Zr:
- 0.001 to 0.049 mass %;
- P:
- 0.01 to 0.35 mass %;
- one or more elements selected from Pb:
- 0.01 to 15 mass %, Bi:
- 0.01 to 15 mass %, Se:
- 0.01 to 1.2 mass %, and Te:
- 0.05 to 1.2 mass %;
- Zn:
- 18 mass % or less;
- and Cu:
- 73 mass % or more serving as a remainder,
- wherein f1=[P]/[Zr]=0.5 to 100, f2=([Zn]+3[Sn])/[Zr]=300 to 15000, f3=([Zn]+3[Sn])/[P]=40 to 2500, and f4=[Zn]+3[Sn]=10 to 43, wherein the content of each element ‘a’ is expressed as [a] mass %, the total content of α, γ and δ-phases is 95% or more, and the mean grain size is 300 μm or less.
Dependencies are inferred from the claim text.