High-strength, high-conductivity and high-extensibility rare earth copper alloy and preparation method thereof
A high-extensibility, high-conductivity technology, applied in high-conductivity, high-extensibility rare-earth copper alloys and their preparation, copper-based alloys and their preparation, and high-strength fields, can solve the problems of poor comprehensive performance of copper-based alloys and achieve improved comprehensive performance. properties, improving alloy properties, and improving production efficiency
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[0026] (1) Preparation of master alloy: Put copper and rare earth elements into a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then fill in nitrogen until the pressure in the furnace is 0.05MPa, control the smelting current to 400~500A, and the smelting voltage is 20~40V to obtain a Cu-rare earth master alloy for future use;
[0027] (2) Melting and mold casting: put copper, chromium, zirconium, nickel, titanium, manganese and the Cu-rare earth master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then fill the furnace with nitrogen until the pressure in the furnace is 0.05MPa, control the melting temperature to 1200-1300°C, pour into the casting mold after melting, and form an ingot, and the pouring temperature is controlled at 1100-1200°C;
Embodiment 1
[0036] The specific preparation method is:
[0037] (1) Preparation of master alloy: Put copper and rare earth elements into a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then charge into nitrogen until the pressure in the furnace is 0.05MPa, control the smelting current to 450A, and the smelting voltage is 30V, to obtain Cu-rare earth master alloy, for subsequent use;
[0038] (2) Melting and mold casting: put copper, chromium, zirconium, nickel, titanium, manganese and the Cu-rare earth master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then fill the furnace with nitrogen until the pressure in the furnace is 0.05MPa, control the melting temperature to 1200°C, pour into the casting mold after melting, and form an ingot, and the pouring temperature is controlled at 1100°C;
[0039] (3) Cast...
Embodiment 2
[0046] The specific preparation method is:
[0047] (1) Preparation of master alloy: Put copper and rare earth elements into a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then charge nitrogen into the furnace until the pressure is 0.05MPa, control the smelting current to 450A, and the smelting voltage is 35V, to obtain a Cu-rare earth master alloy for subsequent use;
[0048] (2) Melting and mold casting: put copper, chromium, zirconium, nickel, titanium, manganese and the Cu-rare earth master alloy prepared in step (1) into a high-frequency vacuum melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then fill the furnace with nitrogen until the pressure in the furnace is 0.05MPa, control the melting temperature to 1250°C, pour into the casting mold after melting, and form an ingot, and the pouring temperature is controlled at 1150°C;
[0049] (3) Castin...
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