摘要:
A method of producing a fiber-reinforced composite material in which a fiber body is mounted on mounting surfaces in a mold cavity, which mounting surfaces are in fluid communication with the outside of the mold through air relief passages. A molten matrix metal is poured into the mold cavity and then subjected to a high hydrostatic pressure so as to be filled into the fiber body while expelling the air from the fiber body to the outside of the mold through the air relief passages. The molten metal is thereafter filled into the air relief passages and solidifies immediately to seal the mold cavity from the ambient atmosphere whereby the molten matrix in the mold cavity is rapidly solidified under high pressure to form a fiber-reinforced composite material of high quality with inclusion of substantially reduced voids or cavities.
摘要:
A method of producing a fiber reinforced composite article comprising forming a shaped fiber body of predetermined configuration from inorganic fibers, placing a tubular member in the shaped fiber body, the tubular member having an opened end and a plurality of communication ports therein and charging a molten matrix alloy by squeeze casting from the outside of the shaped fiber body and, additionally, from the inside of the shaped fiber body through the tubular member. The article can be a connecting rod of an internal combustion engine and the shaped fiber body can be located at a position corresponding to a rib for reinforcing the connecting rod.
摘要:
A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter less than 100 mesh in an amount of not more than 10 weight percent with respect to the total amount of fiber used, and a light alloy matrix fills and is combined with the molded body of inorganic fiber.
摘要:
Method of making a cast reinforced article, such as a connecting rod which includes preparing a bundle of uni-directional inorganic fibers, at least some of which are metallic or metal coated by placing the bundle into a shaping container and heating it to partially fuse the metallic or metal coated fibers to each other. The partially fused bundle is positioned in a mold with a fixed minimum gap surrounding it. A molten light metal alloy is squeeze cast into the mold forming a matrix of the alloy and the bundle. In the case of a connecting rod, the bundle should be shaped elliptically and positioned in the mold such that (I(c) y
摘要:
Method of making a cast reinforced article, such as a connecting rod which includes preparing a bundle of uni-directional inorganic fibers, at least some of which are metallic or metal coated by placing the bundle into a shaping container and heating it to partially fuse the metallic or metal coated fibers to each other. The partially fused bundle is positioned in a mold with a fixed minimum gap surrounding it. A molten light metal alloy is squeeze cast into the mold forming a matrix of the alloy and the bundle. In the case of a connecting rod, the bundle should be shaped elliptically and positioned in the mold such that (I(c) y
摘要:
A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter less than 100 mesh in an amount of not more than 10 weight percent with respect to the total amount of fiber used, and a light alloy matrix fills and is combined with the molded body of inorganic fiber.
摘要:
A connecting rod for an internal combustion engine comprising a rod body having a fiber bundle reinforcement integrated therein. The fiber bundle reinforcement extends longitudinally in a central rod portion of the connecting rod and is exposed at the peripheral surface at a small end portion of the rod where a bore is provided for connection with a piston pin. The fiber bundle reinforcement is exposed in the region of the bore adjacent the central rod portion.
摘要:
A process for producing fiber-reinforced magnesium alloy materials with improved mechanical properties which includes the steps of placing a shaped article of silicon carbide whiskers or silica type, alumina type or silica-alumina type fibers in a casting mold, and pouring into the mold a molten matrix of a magnesium alloy at a temperature lower than 800.degree. C. The shaped article is impregnated with the molten matrix by means of a high pressure coagulation casting method while maintaining the original configuration of the shaped article to form a composite. A magnesium-silicon compound and/or a magnesium-aluminum compound are precipitated in the matrix at the filling and composite-forming step by reaction between the surface fibers of the shaped article and the molten matrix. The whiskers or fibers may be covered by a film of copper, nickel or silver to vary the amount of the precipitated compounds.
摘要:
A method for producing a fiber reinforced composite body, wherein a shaped body of inorganic fiber or a sintered body of metal or ceramic material is placed in a metal mold, and a melt of a metal alloy as a matrix is caused to be penetrated or impregnated into the shaped body by a high pressure solidification casting method so that the matrix may perfectly fill in the voids or pores of the shaped body and solidify to be a desired composite body.
摘要:
In the method of deoxidation casting, a disused metal left in a feeder head can be easily removed from a cast product, or the molten metal left in the feeder head can be removed from the cast product so as to easily finish the cast product. The method comprises the steps of: pouring a molten metal into a cavity of a casting die; and reacting a deoxidizing compound with the molten metal so as to deoxidize an oxide film formed on a surface of the molten metal. And the method is characterized in that rate of cooling the molten metal in a feeder head of the casting die is lower than that in the cavity, and that the molten metal in the feeder head, which is not solidified, is treated when the molten metal in the cavity is solidified so as to make an outline of a cast product correspond to that of a desired product.