| 摘要 |
PURPOSE:To obtain a fiber-reinforced composite material having an intricate shape by pressurizing intermixedly long fibers and short fibers and preforming the mixture to a desired member shape then impregnating the base phase of a molten metal therein. CONSTITUTION:Metallic or inorg. long fibers 3a are arranged in the housing parts 1a, 2a of primary forming molds 1, 2 and a prescribed amt. of short fibers 3b are successively inserted therein while the short fibers are bridged between the long fibers 3a and are superposed thereon generally like sponge. The long and short fiber groups 3a, 3b are molded under pressure by using pressing plates 4, 5. Such molding is housed in secondary forming molds having a desired shape and after the short fibers 3b are replenished in the required part, the molds are heated to cure the molding. A molten base phase material is impregnated with such molding to obtain a fiber-reinforced composite material. The fiber density in the composite material is made uniform by such method and the strength of the material is stabilized. Since adquate voids are formed among the fibres, the impregnation of the base phase is easy.
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