PRODUCTION OF COMPOSITE FIBER MEMBER

摘要

PURPOSE:To obtain a composite member which is dense and has high strength by heating and holding a fiber molding to and at the temp. of a molten metal or above and penetrating the molten metal into the gaps among the fibers under the reduced pressure then solidifying the composite consisting of the fiber molding and the molten metal under a high pressure. CONSTITUTION:A fiber molding 12 of delta-alumina is placed in a graphite crucible 11 and is quickly heated to and held at about 650 deg.C by a high frequency heating furnace 13. A melt 18 of an Al alloy is poured into the crucible and at the same time a valve 16 is opened to evacuate the inside of an evacuated vessel 15 to about 10<-1>Torr and to evacuate the inside of the molding 12 through a filter 14, thereby penetrating the molten metal 18 into the gaps of the molding 12. The inside of the vessel 15 is then leaked and immediately the composite 20 consisting of the molding 12 and the molten metal 18 is charged into a metallic mold 21 and is solidified while the composite is kept pressed to about 1,500kg/cm<2> by a punch 22. The above-mentioned composite fiber member is combined with at least a part of the casting by a casting method. The deformation such as collapsion and bend of the fibers is obviated in the stage of high pressure casting and a uniform distribution is obtd.