A non-vacuum melting horizontal continuous casting production process for high-strength and high-conductivity cu-cr-zr alloy rods
A non-vacuum smelting and alloy rod technology, which is applied in the field of preparation of high-performance copper alloys, to achieve the effect of achieving plate weight, improving surface quality, and improving subsequent cold working performance
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Embodiment 1
[0028] Example 1: Continuous casting of Cu-1.0%Cr-0.16%Zr alloy rods with a diameter of Φ30mm
[0029] (1) Add a Cu-Cr-Zr alloy containing 1.0wt% Cr, 0.16wt% Zr, and impurity <0.2wt% into the melting furnace, heat it to 1350°C and melt it, and protect it with argon in the alloy melting and solidification interval;
[0030] (2) Applying Al to the inner surface of the graphite mold2 o 3 coating;
[0031] (3) Start the mold heating device and cooling device, heat the mold heating section to 1300°C, and the cooling water flow rate of the water-cooled crystallizer is 600L / h;
[0032] (4) Lift the stopper, transfer the molten metal through the draft tube into the holding furnace, close the stopper, and the smelting system continues to smelt the Cu-Cr-Zr alloy;
[0033] (5) The temperature of the holding furnace is set to 1300°C, and left to stand for 0.6h;
[0034] (6) Start the horizontal traction mechanism and the water spray secondary cooling device at the mold outlet (water f...
Embodiment 2
[0035] Example 2: Continuous casting of Cu-0.5%Cr-0.08%Zr alloy rod with diameter Φ50mm
[0036] (1) Add the Cu-Cr-Zr alloy containing 0.5wt% Cr, 0.08wt% Zr, and impurity<0.2wt% into the melting furnace, heat to 1300°C for melting, and add covering agent and refining agent;
[0037] (2) Applying Al to the inner surface of the graphite mold 2 o 3 coating;
[0038] (3) Start the mold heating device and cooling device, heat the mold heating section to 1250°C, and the cooling water flow rate of the water-cooled crystallizer is 800L / h;
[0039] (4) Lift the stopper, transfer the molten metal through the draft tube into the holding furnace, close the stopper, and the smelting system continues to smelt the Cu-Cr-Zr alloy;
[0040] (5) The temperature of the holding furnace is set to 1250°C, and it is left to stand for 0.4h;
[0041] (6) Start the horizontal traction mechanism and the water spray secondary cooling device at the mold outlet (water flow rate: 500L / h), and carry out ...
Embodiment 3
[0042] Example 3: Continuous casting of Cu-0.2%Cr-0.04%Zr alloy rods with a diameter of Φ80mm
[0043] (1) Put the Cu-Cr-Zr alloy containing 0.2wt% Cr, 0.04wt% Zr, and impurity<0.2wt% into the melting furnace, heat to 1250°C to melt, add covering agent and refining agent;
[0044] (2) BN coating is applied to the inner surface of the graphite mold;
[0045] (3) Start the mold heating device and cooling device, heat the mold heating section to 1200°C, and the cooling water flow rate of the water-cooled crystallizer is 1000L / h;
[0046] (4) Lift the stopper, transfer the molten metal through the draft tube into the holding furnace, close the stopper, and the smelting system continues to smelt the Cu-Cr-Zr alloy;
[0047] (5) The temperature of the holding furnace is set to 1200°C, and it is left to stand for 0.5h;
[0048] (6) Start the horizontal traction mechanism and the water spray secondary cooling device at the mold outlet (water flow: 800L / h), and carry out continuous c...
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