| 摘要 |
PURPOSE:To execute partial joining of boundary faces of different materials in the state open to the atm. by pressing the inside surfaces of a casting mold to the front and rear surfaces of a non-combustible rigid material and core and filling a heated molten material into the space formed of the outside peripheral side face thereof and the inside surfaces of the casting mold. CONSTITUTION:The core 9 is connected to part of the outside peripheral side face of the non-combustible rigid material 1. The front and rear surfaces 1', 1''' of the rigid material 1 and the core 9 are pressed to the inside surfaces of the casting mold 5 and the heated molten material 4 is poured and filled through a pouring port 7 into the annular space 3 formed of 1'' and the inside surfaces 2 of the casting mold 5 on the outside peripheral side face thereof. The outside peripheral side face 1'' of the rigid material 1 and the core 9 erceives the pressing force in the direction perpendicular to the side face by the solidified molten material 4' when the molten material 4 is thereafter allowed to cool and shrink. The compressive internal stress (a) by such pressing force remains on the joint surface when the core 9 is removed. The rigid material 1 is grasped and held by the solidified material 4' to form an integral composite material. The part where the core 9 exists is formed as an outside space 10.
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