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1. 发明专利

JPH04124299A COPPER-BASED PLATINUM-CLAD ELECTRODE 失效
公开(公告)号：JPH04124299A
公开(公告)日：1992-04-24
申请号：JP24326890
申请日：1990-09-13
申请人： KOBE STEEL LTD
发明人： NOGUCHI MASATAKA , NISHIBE MINORU
IPC分类号： C25D13/00 , C25D17/12
摘要： PURPOSE:To produce a Cu-based Pt-clad electrode having lowered electric resistance with a reduced amt. of Ti, etc., used at a reduced cost by interposing a middle layer of a corrosion resistant material contg. Ti, Zr, Nb or Ta between an inner Cu alloy layer and an outer Pt alloy layer. CONSTITUTION:An inner Cu or Cu alloy layer ensuring structural strength of an electrode and acting as an electrifying material is clad with a middle layer of a corrosion resistant material contg. Ti, Zr, Nb or Ta to prevent the leaching of the Cu or Cu alloy. An outer Pt or Pt alloy layer insoluble in a plating soln. and an electrolytic soln. is further formed on the periphery of the middle layer. The resulting clad pipe is made flat by pressing and formed into a prescribed electrode shape by bending. When the clad pipe is formed so that both ends are positioned above the surface of a plating soln. or an electrolytic soln., the exposed parts of the inner layer are not immersed in the soln.

2. 发明专利

JPH046448B2 失效
公开(公告)号：JPH046448B2
公开(公告)日：1992-02-05
申请号：JP16957187
申请日：1987-07-07
申请人： KOBE STEEL LTD
发明人： SAEKI CHIKARA , NISHIBE MINORU
IPC分类号： B21C1/22 , B21C3/16 , B21C37/20

3. 发明专利

JPH04339575A MANUFACTURE OF RESISTANCE WELDING ELECTRODE 失效
公开(公告)号：JPH04339575A
公开(公告)日：1992-11-26
申请号：JP14937891
申请日：1991-05-23
申请人： KOBE STEEL LTD
发明人： OGURA TETSUZO , NOGUCHI MASATAKA , ANDO MASATOSHI , MIYATO MOTOHISA , IWAI AKIRA , NISHIBE MINORU , YAMADA TADAAKI
IPC分类号： B22F7/00 , B23K11/30 , B23K35/40 , C21D8/00 , C22C9/06 , C22F1/08
摘要： PURPOSE:To furnish a resistance welding electrode having the long service life excellent in heat resistance, high-temperature strength, electrical conductivity and wettability resistance for molten Al and having the electrode tip part which is hardly deformed. CONSTITUTION:A cylindrical intermediate layer 2 made of ingot metal is first fitted into an outer layer 1 made of oxygen free copper formed cylindrically and powder having specified copper alloy composition is filled into this intermediate layer 2 to obtain a billet. This billet is then subjected to homogenizing treatment at 850-1000 deg.C, then, extruded under condition of an extrusion ratio of 10 at 700-950 deg.C and then, cooled up to =2 deg.C/sec. The billet is then subjected to cold working at the working rate of >=20%, then, heated for more than thirty minutes at 450-550 deg.C and subsequently, cooled up to

4. 发明专利

JPH02200799A INSOLUBLE ELECTRODE FOR ELECTROLYSIS AND CATION ELECTRODEPOSITION COATING METHOD USING THIS ELECTRODE 失效
公开(公告)号：JPH02200799A
公开(公告)日：1990-08-09
申请号：JP1884189
申请日：1989-01-27
申请人： KOBE STEEL LTD , NIPPON PAINT CO LTD
发明人： NOGUCHI MASATAKA , NISHIBE MINORU , SHIMOJO MASAYUKI
IPC分类号： C25D13/06 , C25D17/10 , C25D17/12
摘要： PURPOSE:To form the insoluble electrode for electrolysis which does not elute metal components by forming an anode surface to be used for cation electrodeposition coating of an Ni-Nb intermetallic compd. layer and constituting the base material of Nb. CONSTITUTION:A coating bath 2 consisting of a cation electrodeposition coating material is filled in a cell 1 for electrodeposition and a cylindrical diaphragm chamber 3 closed at the bottom end is provided in this coating bath 2. The diaphragm chamber 3 is formed to have a diaphragm of an ion permeable material and diaphragm water 4 (contg. an org. acid of a low concn.) is passed in the diaphragm chamber 3. A material 11 to be coated is immersed in the coating bath 2 of this constitution and an electrode 10 (stainless steel, etc.) is installed in the diaphragm water 4. A DC current is passed to the material 11 as cathode and the electrode as anode to form the cation electrodeposition coated film on the surface of the material 11. The electrode 10 is the insoluble electrode having the structure consisting laminating a base material 23 consisting of Nb on a support 24 consisting of a good conductor selected from Cu, Al, Fe and further, laminating an Ni layer 22 on the base material 23, then forming the Ni-Nb intermetallic compd. layer by diffusion of the Ni layer 22, and finally laminating a sheath 21 consisting of a carbon steel thereon.

5. 发明专利

JPS63260621A INTERNAL GROOVING METHOD FOR METAL PIPE 失效
公开(公告)号：JPS63260621A
公开(公告)日：1988-10-27
申请号：JP9468387
申请日：1987-04-17
申请人： KOBE STEEL LTD
发明人： NISHIBE MINORU , SAEKI CHIKARA
IPC分类号： B21C1/22 , B21C3/02
摘要： PURPOSE:To form a deep groove and to ensure a desired heat conductivity by forming a drawing die, a grooved plug and a retaining ring for rolled member with a shape memory alloy selectively. CONSTITUTION:The drawing die 2 is formed with the shape memory alloy, after passing through the metal pipe 1 by the same outer diameter of the grooved plug 4 or larger diameter of it, heated and reduced its diameter. More, the grooved plug 4 and the retaining ring 7 for rolled member 6 are formed with the shape memory alloy, the grooved plug 4 is inserted into the metal pipe 1 in the state of having a smaller diameter than the pipe. Then, after the retaining ring 7 for the rolled member 6 is set on the position where it is corresponding to the grooved plug 4 and the rolled member 6 does not press the metal pipe 1, the grooved plug 4 and the retaining ring 7 are heated to expand the diameter of the grooved plug 4 and to contract the diameter of the retaining ring 7 simultaneously. Thence, the inner surface of the metal pipe 1 is expanded to the same diameter of the groove depth or more by the grooved plug 4 to work grooving the inner surface.

6. 发明专利

JPS57155267A COATED WIRE WITH SYNTHETIC RESIN 失效
公开(公告)号：JPS57155267A
公开(公告)日：1982-09-25
申请号：JP4288981
申请日：1981-03-23
申请人： NIPPON PAINT CO LTD , KOBE STEEL LTD
发明人： OONISHI SEIICHI , NAKAMURA YOSHIMI , NISHIBE MINORU
IPC分类号： C09D5/25 , C08K5/10 , C09D127/04 , H01B3/44
摘要： PURPOSE:The titled coated wire, containing a specific amount of a straight chain high-polymeric dialkyl phthalate in a plasticizer incorporated in a specified proportion, having improved adhesivity and peeling property of a film and good processability without whitening, etc., and capable of retaining the corrosion resistance and durability for a long term. CONSTITUTION:A straight chain dialkyl phthalate, e.g. di-n-nonyl phthalate, having a molecular weight >=415, preferably 415-510, in an amount of 20- 100wt% based on the total amount of a plasticizer, e.g. di-2-ethylhexyl phthalate, in a vinyl sol coating material applied to the surface of a metallic wire is contained in the plasticizer. The total amount of the plasticizer is 20-80pts. based on 100pts.wt. resin, preferably a pasty resin. A pigment, stabilizer, viscosity adjusting agent, etc. is added if necessary thereto to give the aimed vinyl sol coating material, which is applied to an iron wire subjected to the chromium treatment, baked and dried to give a dry film thickness of 2-10mu by the dip coating to afford the aimed coated wire having a dry film thickness of 20-150mu.

7. 发明专利

JPH04356377A RESISTANCE WELDING ELECTRODE 失效
公开(公告)号：JPH04356377A
公开(公告)日：1992-12-10
申请号：JP14937791
申请日：1991-05-23
申请人： KOBE STEEL LTD
发明人： OGURA TETSUZO , ANDO MASATOSHI , MIYATO MOTOHISA , NOGUCHI MASATAKA , IWAI AKIRA , HINO MITSUO , SAKURAI TAKEO , NISHIBE MINORU , SASABE SEIJI , EMA MITSUHIRO , YAMADA TADAAKI
IPC分类号： B23K11/30 , B23K103/10
摘要： PURPOSE:To furnish a resistance welding electrode excellent in heat resistance, high-temperature strength and electrical conductivity, and further excellent in wettability resistance for molten aluminum and having the long service life with the electrode tip part hardly deformed. CONSTITUTION:The resistance welding electrode is constituted of a core material 2 made of a powder sintered body having tensile strength of >=600N/mm , electric conductivity of >=30% IACS and oxygent content of >=100ppm and an outer layer 4 made of an ingot metallic material arranged around this core material 2 and having electric conductivity of >=80% IACS and the average tensile strength and average electric conductivity thereof are 400N/mm or more and 60% IACS or more, respectively. In addition, an intermediate layer 3 can be provided between the core material 2 and the outer layer 4.

8. 发明专利

JPH04313418A METHOD AND DEVICE FOR WORKING INSIDE SURFACE GROOVED TUBE 失效
公开(公告)号：JPH04313418A
公开(公告)日：1992-11-05
申请号：JP10635691
申请日：1991-04-12
申请人： KOBE STEEL LTD
发明人： NISHIBE MINORU , ISHIBASHI AKIHIKO
IPC分类号： B21C1/22 , B21C3/10 , B21C3/14 , B21C3/16 , B21D53/06 , B21H3/00
摘要： PURPOSE:To manufacture the grooved inside surface of a tube for a heat exchanger at a low cost and in a stable state by forming a working head by piercing a nozzle hole for supplying and injecting high pressure working oil on a spherical projecting part, and executing the working by pressure of the working oil. CONSTITUTION:To a metallic conduit 12, lubricating oil is pressed in from its end tube, and also, a floating plug connected so as to be rotatable with a tie-rod and a grooved plug 25 having a trapezoidal groove are inserted. Subsequently, by pointing the tube end, a pointed part is formed, and thereafter, this pointed part is allowed to pass successively through a hydraulic rolling part of a first die, and a diameter shaping die, and clamped to a drawing device. Next, working oil of low pressure is supplied to a working head, the drawing device is driven, while rotating the working head, and grooving is performed by raising gradually a drawing speed and working oil pressure to a stationary state. In such a way, a grooved tube in which surface roughness is small, a working mark scarecely exists, and the surface quality is satisfactory is obtained.

9. 发明专利

JPH0320593A INNER SURFACE-COATED HEAT TRANSFER TUBE FOR HEAT EXCHANGER 失效
公开(公告)号：JPH0320593A
公开(公告)日：1991-01-29
申请号：JP15603089
申请日：1989-06-19
申请人： KOBE STEEL LTD
发明人： MINAMOTO KENKI , NISHIBE MINORU
IPC分类号： F28F19/02
摘要： PURPOSE:To provide a heat transfer tube excellent in corrosion resistance against sea water and excellent in contact property by forming on the inside of a tube a coated film where powder having as a chief ingredient either iron hydroxide or iron oxide is dispersed in water glass having a specified molar ratio of Na2O and SiO2. CONSTITUTION:There is formed on the surface of a host material 1 of a heat transfer tube a coated film yielded by dispsesing powder 3 taking as ingredient either iron hydroxide or iron oxide is disersed as a chief ingredient iron hydroxide or iron oxide in water glass 2 having a 2.5-3.3 molar ratio of Na2O and SiO2. When sea water is allowed to pass through the water glass 2 is dissolved into the sea water while the iron hydroxide and the iron oxide adhere to the surface of the coated film, allowing the entire surface of the coated film to be coated with a layer 4 of the iron hydroxide and the iron oxide having excellent corrosion resistance. Although the layer 4 of the iron hydroxide and the iron oxide also gradually disappears by being dissolved into the sea water, new powder 3 is exposed to the film surface owing to be disappearance of the layer 4 and thereafter the film surface is coated with a new layer 5 of the iron hydroxide and the iron oxide. Thus, a layer of the iron hydroxide and the iron oxide is repeatedly formed on the film surface at all times to protect the tube from corrosion over a long period of time.

10. 发明专利

JPH02155510A DEVICE AND METHOD FOR GROOVING INSIDE SURFACE OF METALLIC TUBE 失效
公开(公告)号：JPH02155510A
公开(公告)日：1990-06-14
申请号：JP30920488
申请日：1988-12-07
申请人： KOBE STEEL LTD
发明人： NISHIBE MINORU , ISHIBASHI AKIHIKO , HINO KOJI , KATO JIRO
IPC分类号： B21C1/22 , B21C3/08 , B21C3/16 , B21C9/00
摘要： PURPOSE:To perform high quality inside surface grooving with good workability for a metal tube by performing inside surface grooving by form rolling members and a grooved plug after reducing the tube by cooperation of a floating plug, drawing die having a specific outlet hole diameter, and hydraulic pressure. CONSTITUTION:A metal tube 1 is reduced by cooperation or a drawing die 2 and a floating plug 3. After that, the inside surface of the tube 1 is grooved by from rolling members 6 supported by a holding and supporting ring 7 and a grooved plug 4 rotatably connected to the back of the plug 3 by a tie rod 5. Then, the tube 1 is shaped by passing the tube 1 through a shaping die 8. As for an inside surface grooving device for the above tube 1, the outlet side hole diameter of the die 2 is brought to be larger than a size being twice of (an outside diameter of the plug 4 plus a wall thickness of the tube 1). Further, a liquid such as oil is sprayed by high pressure on the outside peripheral surface of the tube 1 immediately after passing the die 2 in a position just after from the die 2 from plural nozzles 10 arranged in radial positions to push the tube 1 onto a bearing part of the plug 3.

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