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    • 1. 发明专利
    • SINTERING OF HIGH MELTING POINT MATERIAL
    • JPH11228240A
    • 1999-08-24
    • JP3536198
    • 1998-02-03
    • ASAHI ELECTRIC WORKS LTDSTAR SHIP KKNIPPON KOKI KK
    • KIKUCHI HIDEAKINISHIDA EIJIARAKI MASATO
    • C04B35/563C04B35/56C04B35/565C04B35/58C04B35/584C04B35/645
    • PROBLEM TO BE SOLVED: To provide a method for treating a high melting point material by sintering and/or densifying the high melting point substance having a melting point of >2,700 deg.K silicon nitride powder and a porous substance such as a sponge-like substance in the presence of a solid material as a pressure medium under a high pressure and a high temperature without adding an additive for binding the materials. SOLUTION: This method for sintering and/or densifying a high melting point material comprises sealing the high melting point substance having a melting point of >2,700 deg.K, the powder of silicon nitride and a porous substance 1 such as a sponge-like substance in a high pressure high temperature device using a solid material as a pressure medium and subsequently sintering and/or densifying the sealed materials under a high pressure of >=100 MPa. Therein, the sintering and/or the densification are carried out within a temperature below the melting point-pressure range under a condition: T>=0.7Tm -0.2P in a range of the equation: 2GPa>=P>=100 =0.7Tm -400 in a range of the equation: P>=2GPa, wherein P is a pressure; Tm is the melting point, vaporization point or decomposition point of the material; T is a treating temperature; P is expressed by a unit of MPa; Tm and T are expressed by units of deg.K, respectively.
    • 3. 发明专利
    • METALLURGICAL JOINTING METHOD FOR TENSION WIRE USING FILAMENT FUSED UNDER EXPLOSION PRESSURE
    • JPH1055871A
    • 1998-02-24
    • JP22617896
    • 1996-08-09
    • ASAHI ELECTRIC WORKS LTDSTAR SHIP KK
    • KIKUCHI HIDEAKINISHIDA EIJIARAKI MASATO
    • H01R43/04H01R4/08
    • PROBLEM TO BE SOLVED: To provide a novel wire jointing method allowing an application even to a part exposed to tension by caulking and jointing a steel sleeve capped to a steel conductor to carry the tension of a wire. SOLUTION: A steel sleeve 4 having a cross section large enough to withstand tension burdened on steel conductors 5 is provided so as to cover the preset length of the steel conductors 5 acting to carry wire tension, and aluminum wires positioned on the outer surface of the sleeve 4 are covered by winding aluminum filaments 2 of the same material as the aluminum wires, or with a cloth type woven material of the aluminum filaments 2 of the same material as the aluminum wires. A sleeve 3 of the same material as the wires is similarly provided to conceal the cover of the aluminum wires. A direct or indirect centripetal explosion shock is then applied to the wires and aluminum filaments 2 via the outer surface of the sleeve 3, thereby compressing and heating the aluminum filaments 2 with the applied shock. Thereafter. the steel sleeve 4 covering the steel conductors 5 are deformed in a centripetal way, with the wires, aluminum filaments 2 and sleeve 3 jointed integrally and metallurgically. The steel sleeve 4 is thereby caulked and fixed to the steel conductors 5. Thus, both a metallurgical joint and a joint capable of withstanding tension are concurrently provided.
    • 6. 发明专利
    • CYLINDRICAL EXPLOSIVE FOR METALLIC WORKING
    • JPH10300396A
    • 1998-11-13
    • JP12782597
    • 1997-05-02
    • ASAHI ELECTRIC WORKS LTDSTAR SHIP KK
    • KIKUCHI HIDEAKINISHIDA EIJIARAKI MASATO
    • F42B3/00
    • PROBLEM TO BE SOLVED: To prevent such a trouble that the explosion collides against each other on the opposite side of an initiating explosion point and that the explosive pressure roughly doubles and it causes a flaw in the material to be processed surrounded by an explosive, by arranging explosion inert substance in a collision forecast position. SOLUTION: The explosion initiated from the position of 0 deg. on one side of an explosive 1 divides in tow and they go on in the explosive 1 at the same equal velocity, and collide against each other in the position of 180 deg. on opposite side. In this case, since inert substance 2 intercepts the explosion of an explosive in the position of 180 deg., the explosive pressure is transmitted to the inert substance 2, and attenuates quickly. The sectional form of the inert substance 2 is basically convex in the direction of 180 deg., to the surface of the material 3 to be worked where the sectional form intercepts an explosive layer, and besides the surface of the inert substance 2 is concave to the explosive 1, at the interface between the explosive 1 and the inert substance 2. Hereby, the pressure shortage oriented to the material to be processed can be avoided while avoiding the doubling of the explosive pressure.
    • 9. 发明专利
    • EXPLOSIVE JOINING METHOD FOR TENSION-RESISTING WIRE
    • JPH1022038A
    • 1998-01-23
    • JP21222096
    • 1996-07-04
    • ASAHI ELECTRIC WORKS LTDSTAR SHIP KK
    • KIKUCHI HIDEAKINISHIDA EIJIARAKI MASATO
    • H01R43/04H01R4/08
    • PROBLEM TO BE SOLVED: To join tension-resisting wires excellent in weather resistance, time course and strength surely and with small amounts of explosive powder metallurgically by an explosion by connecting end surface of steel core parts at the end of both electric wires in a copper sleeve and covering it with an aluminum wire, then setting an aluminum sleeve on it, and by pressing by an explosion. SOLUTION: Aluminum stranded wires on the ends of two electric wires to be joined are unraveled for fixed length. A bare steel core wire 2 is inserted into a steel sleeve 4 and end parts are contacted. The circumference of the steel sleeve 4 is covered by above described unraveled aluminum wire 1, and an aluminum sleeve 3 for inside layer with the same length as the steel sleeve 4 is placed on it, and an aluminum sleeve 5 for outside layer of larger diameter is put on the outside through a spacer 11. Explosive 6 with explosion speed under 4000m/sec is wound outside through an explosive case 8 and is fired from one part through a fuse and a detonator. This action joins the aluminum sleeves 3 and 5, and the aluminum wire 1 metallurgically at high speed, also caulks the steel sleeve 2 centripetally, and joins both iron cores 2 strongly in mechanical.