Homogenizing annealing thermal treatment technology for A390 aluminum alloy cast ingot
An aluminum alloy ingot, annealing heat treatment technology, applied in the field of metal material heat treatment, can solve the problems of poor eutectic silicon morphology, poor processing performance, and high alloy hardness, and achieve the elimination of intragranular segregation, improvement of processing performance, and uniform distribution. Effect
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[0023] Example 1
[0024] The A390 aluminum alloy ingot obtained by electromagnetic stirring-semi-continuous casting technology was placed in a resistance furnace, heated to 400°C with the furnace, kept for 2 hours, cooled to 250°C with the furnace after being kept warm, and air-cooled.
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[0025] Example 2
[0026] The A390 aluminum alloy ingot obtained by electromagnetic stirring-semi-continuous casting technology was placed in a resistance furnace, heated to 450 °C with the furnace, kept for 4 h, cooled to 250 °C with the furnace after heat preservation, and air-cooled.
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[0027] Example 3
[0028] The A390 aluminum alloy ingot obtained by electromagnetic stirring-semi-continuous casting technology was placed in a resistance furnace, heated to 480°C with the furnace, kept for 6 hours, cooled to 250°C with the furnace after heat preservation, and air-cooled.
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