FIELD: metallurgy.
SUBSTANCE: method involves alloy heating to a temperature exceeding the liquidus alloy temperature by 200-550°C, then the alloy is held at this temperature for 20-30 minutes, cooled down to a temperature not exceeding the alloy casting temperature, at a rate of at least 10 deg/s. The melt is mixed and poured into a mould. The melt is periodically mixed in at least 5-10 minutes during heating and high-temperature aging. When the alloy is cooled below the pouring temperature, it is reheated up to the pouring temperature. The liquid state time of the alloy after cooling before pouring into the mould does not exceed 20 minutes.
EFFECT: increased density and mechanical properties of castings.
2 cl, 6 tbl
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Authors
Dates
2017-12-14—Published
2015-07-16—Filed