METHOD FOR WASHING OF CASTING MOLD FOR LOST WAX CASTING AND CASTING MOLD FOR LOS WAX CASTING

摘要

PROBLEM TO BE SOLVED: To obtain a casting mold for casting having a highly clean casting mold cavity by submerging the casting mold provided with plural apertures penetrating the mold into the inside from its outer all into water and blowing air into the casting mold from its lower side aperture. ;SOLUTION: The casting mold for lost wax casting is necessarily provided with the plural apertures including sprues and at least one aperture separately from the sprues. The diameter of the aperture is preferably set at ≥8 to ≤30 mm. An air injection nozzle 8 is used to blow the air and the diameter of the nozzle 8 is specified to 2 to 10 mm. For example, the product part cavity 4 of the ceramic casting mold 1 has a sprue cup 2 and the front end of the product part which is on the opposite side of the sprue cup 2 is provided with the aperture 3. The casting mold 1 with the sprue cup 2 faced downward is submerged into a washing tank 5 which is provided with a water suction hole 6 and a drain port 7 and into which the water 8 is passed. The air is injected from the nozzle 8 to wash the casting mold. The casting mold 1 is dried after the end of the washing. As a result, the defect on and in the products are decreased and a yield is improved.;COPYRIGHT: (C)2000,JPO