| 摘要 |
PURPOSE:To produce a composite fibrous metallic material having no deviation in the positions of fibers and having good adhesion between fibers and metal by sucking the air in the product cavities through the air vents provided in the positions of dies on which the fibrous assemblages in the dies abut. CONSTITUTION:Fiber assemblages 5 consisting of alumina fibers, etc. are placed in the shoulder parts 4 in the prescribed positions of the product cavities delineated by dies 1, and the air in the product cavities 2 is sucked through the air vents 3 provided in the positions of the dies on which the assemblages 5 abut, whereby the assemblages 5 are fixed. While the suction is continued, the molten metal 7 such as aluminum alloy is charged into the cavities and is allowed to solidify under pressurization with a pressurizing plunger 6, whereby the metal 7 is substituted with the air existing among the fibers of the assemblages 5 and is penetrated therein and the firm adhesion power between the fibers and the metal is obtained. Since the air in the cavities 2 is expelled, formation of casting defects such as gas holes is obviated. |
