Abstract: A transmission shaft set includes a shaft for use in a motor for power output and an axle bush adapted to support the shaft, the shaft and the axle bush being respectively made of material of high toughness and material of high harness such that the hardness difference between the shaft and the axle bush is about Hv100˜Hv400, and the hardness of the axle bush is higher than the shaft.

Abstract: A fiber optics ferrule precision improvement apparatus controlled to insert a ceramic fiber optics ferrule calibrating axle into the inner diameter or onto the outer diameter of a fiber optics ferrule, so as to expand the inner diameter or compress the outer diameter of the fiber optics ferrule, calibrating the inner diameter or outer diameter of the fiber optics ferrule to the dimension tolerance and roundness approximately equal to the ceramic fiber optics ferrule calibrating axle, and keeping the tolerance of the fiber optics ferrule within 1˜3 &mgr;m. The fabrication of the ceramic fiber optics calibrating axle includes the steps of ceramic powder pre-treatment process, ceramic powder activation process, blank axle body formation process, sintering process, and high-precision grinding process.

Abstract: A method of manufacturing a high-density titanium alloy article is disclosed. The method comprises a mixing and granulating step, a high-pressure molding step, and a high-temperature sintering step. Moreover, by means of selecting proper size of titanium raw powder and granulating the titanium raw powder and other metallic powder into titanium-based grains, a titanium alloy article having a high density is obtainable.

Abstract: The present invention discloses a method of manufacturing a combination heat sink having a best heat transfer efficiency and a combination heat sink made thereby. The present method comprises steps (a) to (d). In step (a), the plurality of radiating fins are piled up by sparing the radiating fins apart from each other in a substantially parallel manner with the bottom edges thereof being oriented in a same direction. In step (b), a recess is formed on the top surface of the common surface. In step (c), a heat-conductive brazing alloy is applied to the recess of the common surface. In step (d), the plurality of radiating fins are joined with the common base by seating the bottom edges of the fins onto the recess of the common base and heating the brazing alloy.

Abstract: A fusion welding method for binding the surfaces of two metals including the steps of (a) coating a layer of a powdery media capable of forming eutectics with both the two metals for lowering the melting points of the two metals, onto at least one of the binding surfaces of the two metal to be bound; and (b) sintering, in a vacuum furnace, the two metals with said powdery media being coated on their binding surfaces as produced in step (a) until the two metals are fused together by eutectic welding, and the sintering temperature being controlled at a temperature higher than the eutectic points of the two metals and the powdery medium, but lower than the melting points of the two metals.