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    METHOD AND DEVICE FOR PARTICLE ARRANGEMENT LASER BEAM SINTERING
    1.
    发明专利
    METHOD AND DEVICE FOR PARTICLE ARRANGEMENT LASER BEAM SINTERING 失效

    公开(公告)号：JPH03146606A

    公开(公告)日：1991-06-21

    申请号：JP28427089

    申请日：1989-10-31

    Applicant: WATANABE RYUZO ,  KAWASAKI AKIRA ,  NAT AEROSPACE LAB ,  ISHIKAWAJIMA HARIMA HEAVY IND

    Inventor： WATANABE RYUZO ,  KAWASAKI AKIRA ,  SHINNO MASAYUKI ,  YUKI MASAHIRO ,  MURAYAMA TOSHIICHI ,  IRISAWA TOSHIO

    IPC: B22F7/04 ,  B22F3/10 ,  B22F3/105 ,  C04B35/64 ,  C23C24/10 ,  C23C26/00

    Abstract: PURPOSE:To easily manufacture a gradated functional material constituted with intermediate layer continuously varying composition thereof by repeatedly executing heating and sintering process, in which powder is arranged on surface of a base material and irradiated with laser beam, at the suitable sintering temp. according to the composition of each arranged powder. CONSTITUTION:For example, at the time of manufacturing the gradated functional material, in which the front face is ceramic 11 and the back face is metal 12 and the intermediate layer is continuously varied with these compositions, at first, the base material 13, which can be separated with the metal 12, is prepared. The metal powder 14 is thinly arranged on this base material 13 with a nozzle 15 and irradiated with the laser beam 16 and heated and sintered at the suitable sintering temp. of the metal powder 14 to form sintered layer having 100% metal. Successively, the powder mixing the ceramic powder 13 into the metal powder 14 on the sintered layer is arranged with the nozzle 15 and heated and sintered at the suitable temp. with the laser beam 16. The operation is repeatedly executed while gradually increasing the mixed rate of ceramic powder 21 and finally, the sintered layer having 100% ceramic is formed. By this method, the gradated functional material composed of the ceramic 11 at the first face and the metal 12 at the back face is easily obtd.

    STRUCTURE AND METHOD FOR JOINING-TREATMENT OF END PART IN MATERIAL
    2.
    发明专利
    STRUCTURE AND METHOD FOR JOINING-TREATMENT OF END PART IN MATERIAL 失效

    公开(公告)号：JPH03146607A

    公开(公告)日：1991-06-21

    申请号：JP28426889

    申请日：1989-10-31

    Applicant: WATANABE RYUZO ,  KAWASAKI AKIRA ,  NAT AEROSPACE LAB ,  ISHIKAWAJIMA HARIMA HEAVY IND

    Inventor： WATANABE RYUZO ,  KAWASAKI AKIRA ,  SHINNO MASAYUKI ,  YUKI MASAHIRO ,  MURAYAMA TOSHIICHI ,  IRISAWA TOSHIO

    IPC: C04B37/00 ,  B22F7/08 ,  C04B37/02

    Abstract: PURPOSE:To enable joining with the wall-known welding method by varying composition to joining end direction in a material and allowing the most outer end part to be a weldable composition. CONSTITUTION:Raw material powder 31 of ceramic 12, raw material powder 32 of metal 13 and binder 33 are prepared and composition ratio is adjusted with each composition ratio control valve 34, and they are mixed with a mixing nozzle 35 and injected and filled up into a metallic mold 36. Then, the metallic mold 36 is shifted to X-Y direction and they are filled up so that the front face 11a is the ceramic 12 and the back face 11b and the joining end part 11c are the metal 13 and the composition toward the end part 11c from the center part continuously varies in binary condition, and pressurized and formed to the prescribed shape to make the gradated functional material 11. Successively, the material 11 is heated under the condition of giving the temp. gradation corresponding to the gradation of composition in the raw material powder by using a device combining a sintering furnace and laser beam heating device for uniform heating and held to the sintering temp. for each composition. By this method, the metal 13 having 100% at the joining end part 11c is obtd. and the metal- made structural materials can be joined respectively.

    SINTERING METHOD FOR ADDING TEMPERATURE GRADATION AND DEVICE THEREOF
    3.
    发明专利
    SINTERING METHOD FOR ADDING TEMPERATURE GRADATION AND DEVICE THEREOF 失效

    公开(公告)号：JPH03146603A

    公开(公告)日：1991-06-21

    申请号：JP28426989

    申请日：1989-10-31

    Applicant: WATANABE RYUZO ,  KAWASAKI AKIRA ,  NAT AEROSPACE LAB ,  ISHIKAWAJIMA HARIMA HEAVY IND

    Inventor： WATANABE RYUZO ,  KAWASAKI AKIRA ,  SHINNO MASAYUKI ,  YUKI MASAHIRO ,  MURAYAMA TOSHIICHI ,  IRISAWA TOSHIO

    IPC: B22F3/10 ,  B22F3/105 ,  C04B35/64

    Abstract: PURPOSE:To manufacture a gradated functional material having different property at the front and the back by heating the surface of a powder green compact with laser beam after heating it near to starting temp. of sintering, cooling the back face and sintering while giving temp. gradation. CONSTITUTION:For example, the powder green compact W composed of ceramic on the front face and metal on the back face, is set on a cooling device 25 in a sintering furnace 13 and the inner part of the furnace is made to an inert gas atmosphere with a vacuum suction device 18 and gas introducing hole 19. Successively, after uniformly heating in the sintering furnace 13 near to the starting temp. of sintering to the powder green compact W with an electric heating device 11, the powder green compact W is irradiated with the laser beam in a laser beam heating device 22 through a laser beam irradiating aperture 21 to heat the surface thereof. Simultaneously, cooling gas is supplied from a cooling device 25 to cool the back face of powder green compact W, and the sintering is executed under the condition of existence of the temp. inclination between the front and the back. By this method, as coming from the front face to the back face, the gradated functional material continuously varying the property at atomic and molecular level, is obtd.

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