Combined type water-cooled casting mould integrating directional casting blank solidification and selective area cooling
A technology of directional solidification and water-cooled casting molds, which is applied in the field of metallurgical casting. It can solve the problems that the internal quality of the billet cannot be completely improved, and the casting mold cannot be designed for the round billet. Ratio, the effect of grain uniformity
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[0045] Example 1
[0046] Place the combined water-cooled casting mold on the lifting platform of the vacuum casting chamber, evacuate the vacuum to below 10 Pa, heat the electrolytic copper to 1200°C with a graphite crucible, add pure silver and sponge zirconium after the metal in the crucible is melted, and the melting temperature continues to rise to 1300-1350℃, adjust the composition to obtain NARloy-Z alloy (Cu-3%Ag-0.5%Zr) liquid, cool down and stand still to 1150-1200℃ for vacuum casting, slowly lower the lifting platform as the liquid level rises to ensure immersion The nozzle is always below the liquid level to prevent alloy liquid from splashing to the inner mold wall. At the end of casting, add the prepared molten glass through the hopper, then add the prepared heating agent, and finally add the covering agent.
[0047] Open the water inlet 5-10 minutes before the start of the upper pouring, so that the upper and lower bottom plates are lowered to a lower temperature. ...
Example Embodiment
[0049] Example 2
[0050] Place the combined water-cooled casting mold on the lifting platform of the vacuum casting chamber, evacuate the vacuum to below 10Pa, use a graphite crucible to heat the electrolytic copper to 1200℃, add pure silver and sponge zirconium after the metal in the crucible is melted, and the melting temperature will continue to rise To 1300-1350℃, adjust the composition to obtain Cu-Cr-Zr alloy (Cu-0.65%Cr-0.1%Zr) liquid, cool down and stand still to 1220-1250℃ for vacuum casting, slowly lower the lifting platform as the liquid level rises , To ensure that the immersion nozzle is always below the liquid level to prevent alloy liquid from splashing on the inner mold wall. At the end of casting, add the prepared molten glass through the hopper, then add the prepared heating agent, and finally add the covering agent.
[0051] Open the water inlet 5-10 minutes before the start of the upper pouring, so that the upper and lower bottom plates are lowered to a lower ...
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