By the diffused junction of the dissimilar metal which uses sublimation pattern casting process compound casting process and that device

摘要

PURPOSE: To provide a method and a device for composite casting of dissimilar metals using a lost foam pattern casting method capable of two dimensions (plane) or three dimensions (cubic) of dissimilar metals in one process at a low cost. ;CONSTITUTION: A casting plan 1 where a composite stock of arbitrary metal is joined to a lost foam pattern made of a foamable resin, a sprue made of ceramics tube is faced to one side of the lost foam pattern part, and a riser made of heat insulating material is loaded on the upper surface, is placed in a flask 7 related to a three dimensional exciting device 8 and connected to a vacuum evacuating device 9, and the spread into the details of a mold made of a refractory 6 is promoted by providing the vibration in the X, Y, Z directions after being coated and embedded with the refractory 6. In the condition where the flask 7 is evacuated to the prescribed degree of vacuum, the substitute metal which is separately melted and controlled to an appropriate temperature is poured from the sprue made of ceramics, and the gas generated in the substitution process is discharged out of the flask through the riser. When the substitution of the lost foam pattern part is completed and the cooling is executed, the evacuation is stopped, and the sprue made of ceramics and the riser are cut.;COPYRIGHT: (C)1995,JPO