Method for preparing copper alloy for contact wire
A technology of contacting wires and copper alloys, which is applied in the field of copper alloy processing, can solve the problems of difficult preparation of carbon-carbon composite linings, poor lubrication, poor use effects, etc., to achieve low prices and improve service life , the effect of convenient preparation
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Embodiment 1
[0035] (1) Melting: Put the cathode copper into the three-furnace up-lead induction melting furnace with the intermediate transition chamber, add charcoal and graphite flakes to cover, and melt under the protection of argon;
[0036] (2) Degassing: Inject argon into the copper melt in (1) for 20 minutes, and the oxygen content in the melt is measured to be 48ppm. The treated melt is covered with charcoal and flake graphite, and filled with argon. protection;
[0037] (3) Alloying: Add Cu-15wt%Cr master alloy into the melt to melt, and after Cu-15wt%Cr master alloy is completely melted, add Cu-20wt%Mg-10wt%Zr, Cu-5wt%B and Cu-15wt% Ti master alloy, stir, stand still, adjust the alloy composition to: Cr 0.2wt%, Zr 0.18wt%, Mg 0.2wt%, B 0.06wt%, Ti 0.2wt%, the balance is Cu;
[0038] (4) Upward continuous casting: When the melt temperature reaches 1200°C, draw casting is started. The lining of the mold is made of φ20mm SiC / graphite composite material (SiC60wt%, graphite 40wt%), and the...
Embodiment 2
[0042] (1) Melting: Put the cathode copper into a three-furnace up-lead induction melting furnace with a middle transition chamber, add charcoal and graphite flakes to cover, and melt under the protection of argon;
[0043] (2) Degassing: Pour argon into the copper melt in (1) for 20 minutes, then add Cu-P and stir, and let it stand. The oxygen content in the melt is measured to be 23 ppm. For the treated melt Cover charcoal, flake graphite, and fill with argon for protection;
[0044] (3) Alloying: Add Cu-15wt%Cr master alloy into the melt to melt, and after Cu-15wt%Cr master alloy is completely melted, add Cu-15wt%Mg-10wt%Zr, Cu-5wt%B and Cu-15wt% Ti master alloy, stir, stand still, adjust the alloy composition to: Cr 0.52wt%, Zr 0.02wt%, Mg 0.1wt%, B 0.03wt%, Ti0.05wt%, the balance is Cu;
[0045] (4) Upward continuous casting: When the melt temperature reaches 1250°C, draw casting is started. The mold lining is made of φ20mm SiC / graphite composite material (SiC65wt%, graphite 35...
Embodiment 3
[0049] (1) Melting: Put the cathode copper into a three-furnace upper induction melting furnace with a middle transition chamber, add charcoal and graphite flakes to cover, and melt under the protection of nitrogen;
[0050] (2) Degassing: Pour nitrogen into the copper melt in (1) for 20 minutes, and the oxygen content in the melt is measured to be 35 ppm. Cover the treated melt with charcoal and flake graphite, and fill it with nitrogen for protection;
[0051] (3) Alloying: Add Cu-15wt%Cr master alloy into the melt to melt, after Cu-15wt%Cr master alloy is completely melted, add Cu-10wt%Mg-10wt%Zr, Cu-5wt%B and Cu-15wt% Ti master alloy, stir, stand still, adjust the alloy composition to: Cr 0.45wt%, Zr 0.11wt%, Mg 0.13wt%, B 0.04wt%, Ti0.03wt%, the balance is Cu;
[0052] (4) Upward continuous casting: When the melt temperature reaches 1225°C, draw casting is started. The mold lining is made of φ25mm SiC / graphite composite material (SiC 70wt%, graphite 30wt%), and the inner surface...
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