Gradual solidification forming method for large steel ingot or steel billet
A solidification forming and steel ingot technology, which is applied in the field of metal material forming, can solve the problems of high risk of steel ingots and low metal utilization rate, and achieve the effects of fast solidification speed, short production cycle and high metal yield
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[0021] A gradual solidification forming method for large steel ingots or billets. The key of the method is to inject molten metal step by step with ladle of different tonnage into molds of different sizes to solidify, and the solidified steel ingot in the previous step becomes the next step before solidification begins. The center of the shaft, cyclically, gradually solidified and accumulated to form a steel ingot of the target size. The specific steps are:
[0022] 1. The molten metal is poured into the mold through a nozzle, and the molten metal in the mold is initially solidified under the action of the water-cooled mold, and the metal billet is drawn out of the mold with the ingot device and then sprayed to cool to complete solidification;
[0023] 2. Expand the radial dimension of the mold, and place the steel ingot solidified in the first step (called the initial ingot core) at the center of the expanded mold;
[0024] 3. Pour the molten metal into the water-cooled crystallize...
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