| 摘要 |
PURPOSE:To facilitate orientated solidification and to obtain a light alloy casting having only a little interval defect by inserting cast-in of a cooling pipe in a die at the position to be necessary to cool. CONSTITUTION:On a mold loading table 4 of a furnace body containing molten Al alloy, the lower die in the die A, in which the cooling pipes 16, 17 are inserted under the cast-in condition at the position to be necessary to cool, is fitted. Further, a partition die 18 composing of a side die 12, in which the cooling pipe 22 is inserted under the cast-in condition at right and left and front and rear is fitted at upper part of the lower die as freely closing or opening and also, the upper die 13, in which the cooling pipe 26 is inserted under the cast-in condition to be necessary to cool, is fitted to a die fitting plate arranged as freely lifting on a base plate for supporting the furnace body. Next, by increasing the air pressure in the furnace, the molten Al alloy is cast into a cavity 35 in the die A. During casting, coolant, such as water, is flowed in the cooling pipes 16, 17, 22, 26, and the part, where blow hole is easily developed, is cooled and cast, and the casting is taken out by moving the side die 12 and upper die 13 after casting.
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