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1. 发明专利

JPH07118710A HYDROGENATION METHOD IN PRODUCTION OF TITANIUM POWDER 失效
公开(公告)号：JPH07118710A
公开(公告)日：1995-05-09
申请号：JP26665393
申请日：1993-10-25
申请人： NIPPON STEEL CORP , TOHO TITANIUM CO LTD
发明人： TAKAKU NOBORU , FUJII HIDEKI , YAMAMIYA MASAO , TAMURA MICHIO , KAGOHASHI WATARU , FUKAZAWA HIDEKAZU , MURAYAMA RYOJI
IPC分类号： B22F9/04
摘要： PURPOSE:To relax restrictions on the raw titanium material to be hydrogenated, to reduce the cutting cost and further to improve productivity in hydrogenation in the production of tiatnium powder by hydrogenation and dehydrogenation. CONSTITUTION:The raw titanium having bulk density, placed in a treating vessel and hydrogenated. Concretely, a raw titanium low in bulk density is compressed to fill a raw tiatnium low in bulk density between the raw titanium materials high in bulk density, and the bulk density is controlled.

2. 发明专利

JPH0754017A METHOD AND APPARATUS FOR PRODUCING TITANIUM POWDER 失效
公开(公告)号：JPH0754017A
公开(公告)日：1995-02-28
申请号：JP20519893
申请日：1993-08-19
申请人： NIPPON STEEL CORP , TOHO TITANIUM CO LTD
发明人： TAKAKU NOBORU , FUJII HIDEKI , YAMAMIYA MASAO , TAMURA MICHIO , KAGOHASHI WATARU , FUKAZAWA HIDEKAZU , MURAYAMA RYOJI
IPC分类号： B22F9/04 , B22F9/28
摘要： PURPOSE:To efficiently and economically produce the titanium powder by utilizing the gaseous hydrogen produced in a dehydrogenation treatment of titanium hydride powder for the hydrogenation treatment of raw material titanium and utilizing the heat generated in this treatment for dehydrogenation. CONSTITUTION:A hydrogenation vessel 1 housing the raw material titanium 13 and a hydrogenation vessel 2 housing the titanium hydride powder 14 put into tray-shaped containers 15 internally heaving heaters 4 are arranged into a heat treatment furnace 3 having furnace wall heaters 5. A specified pressure and temp. are maintained in the furnace. Gaseous H2 is then supplied to hydrogenate the raw material titanium 1 and thereafter, the raw material titanium is pulverized, by which the titanium hydride powder is obtd. On the other hand, the titanium hydride powder 14 is subjected to the dehydrogenation treatment, by which the titanium powder is obtd. The gaseous hydrogen produced in the dehydrogenation treatment at that time is supplied through a discharge pipe 7, a pump 10 and an introducing pipe 6 to the hydrogenation vessel 1 and is utilized for the hydrogenation treatment of the raw material titanium 13. On the other hand, the heat generated in the hydrogenation treatment of the exothermic reaction is supplied to the dehydrogenation vessel 2 and is utilized for the dehydrogenation treatment of the endothermic reaction.

3. 发明专利

JPH0633115A PRODUCTION OF EXTRA-LOW CHLORIDE TITANIUM POWDER 失效
公开(公告)号：JPH0633115A
公开(公告)日：1994-02-08
申请号：JP19431892
申请日：1992-07-21
申请人： NIPPON STEEL CORP
发明人： TAMURA MICHIO , TAKAKU NOBORU , FUJII HIDEKI
IPC分类号： B22F1/00 , B22F9/04
摘要： PURPOSE:To carry out the production of the extra-low chlorine titanium powder at a low cost by pulverizing and removing the brittle layer on the surface layer part of a smelted titanium lump subjected to a hydrogen absorption treatment, heating and holding the remaining lump under specific conditions and rapidly cooling the lump, thereby removing the oxide layer of the surface layer. CONSTITUTION:The brittle layer of the surface layer part of the smelted titanium lump heated and held in a hydrogen-contg. atmosphere is removed by a mechanical pulverization method. The remaining lump is then heated and held for the time of >=5 minutes and

4. 发明专利

JPS60165324A UNIFORM HEATING APPARATUS OF WIRE MATERIAL 失效
公开(公告)号：JPS60165324A
公开(公告)日：1985-08-28
申请号：JP2087384
申请日：1984-02-09
申请人： NIPPON STEEL CORP
发明人： YASUZAWA NORIO , TAKAKU NOBORU , FUKUYASU KENJI
IPC分类号： C21D9/52 , C21D1/64 , C21D9/573
摘要： PURPOSE:To apply homogeneous hardening treatment to a wire material by uniformly quenching said wire material, by allowing the high temp. hot rolled wire material to pass a cooling tank in a loose coil form and injecting a cooling medium to said wire material from above by an angle variable nozzle. CONSTITUTION:A hot rolled wire material 2 is fallen on the wet conveyor 7 in a heat treatment tank 5 storing a cooling medium 4 in a loose coil form from a dry conveyor 3 and conveyed through the cooling medium 4 by the movement of said wet conveyor 7. The cooling medium 4 is injected from the loose coil 2 of the wire material from the direction at a right angle to the conveying direction of the loose coil of the wire material to a direction near to horizontality, while the direction of a nozzle 9, of which the direction is freely alterable around a fulcrum 9', is changed, in such a state the leading end of said nozzle is immersed in the cooling medium 4 to cool and harden said loose coil 2. By this method, the wire material coil 2 is uniformly cooled and hardened by using a reduced amount of the cooling medium and a homogeneous heat treated wire material is obtained as a whole.

5. 发明专利

JPH0776706A HEATING METHOD AND DEVICE FOR TITANIUM POWDER PRODUCTION 失效
公开(公告)号：JPH0776706A
公开(公告)日：1995-03-20
申请号：JP22262593
申请日：1993-09-07
申请人： NIPPON STEEL CORP , TOHO TITANIUM CO LTD
发明人： TAKAKU NOBORU , FUJII HIDEKI , YAMAMIYA MASAO , TAMURA MICHIO , KAGOHASHI WATARU , FUKAZAWA HIDEKAZU , MURAYAMA RYOJI
IPC分类号： B22F1/00 , B22F8/00 , B22F9/04
摘要： PURPOSE:To improve productivity and to reduce a production cost by enhancing heating efficiency and shortening the heating time at the time of a hydrogenation treatment and dehydrogenation treatment in production of titanium powder by a hydrogenation and dehydrogenation method. CONSTITUTION:This heating method comprises charging raw material titanium 13 or titanium hydride powder into a vessel 1 and heating the titanium powder by heaters 4, 5 arranged on the outer side and inside of the vessel 1. The heating device consists of the hydrogenation treating vessel 1 or the dehydrogenation treating vessel and a furnace 3 covering this vessel, is provided with a hollow part exclusive at the central part of the hydrogenation treating vessel of a gap made to remain in the upper part in the vessel, is provided with the hollow part 6 at the central part of the dehydrogenation treating vessel 1 and has an internal heater in this hollow part 6 and a furnace wall heater 5 on the inside wall of the furnace 3.

6. 发明专利

JPH0770614A DEHYDROGENATION VESSEL AND METHOD IN PRODUCTION OF TITANIUM POWDER 失效
公开(公告)号：JPH0770614A
公开(公告)日：1995-03-14
申请号：JP22128793
申请日：1993-09-06
申请人： NIPPON STEEL CORP , TOHO TITANIUM CO LTD
发明人： TAKAKU NOBORU , FUJII HIDEKI , YAMAMIYA MASAO , TAMURA MICHIO , KAGOHASHI WATARU , FUKAZAWA HIDEKAZU , MURAYAMA RYOJI
IPC分类号： B22F1/00 , B22F9/04
摘要： PURPOSE:To dehydrate titanium hydride powder in the production of titanium powder by uniformly supplying the titanium hydride powder into a treating vessel without any manual work and excellently circulating and sucking the liberated hydrogen during dehydrogenation. CONSTITUTION:This dehydrogenation vessel for producing titanium powder has a bottom wall and a side wall, and one or plural ducts opened at a position lower than the side wall and piercing the bottom wall are arranged on the bottom wall. The vessels 1a...1d are placed on one another in multiple stages, and the positions of the ducts of the adjacent upper and lower vessels are different from each other. A titanium hydride powder 8 is supplied into the uppermost vessel then into the lower vessels, the excess powder is allowed to overflow into the succeeding vessel, the supply of the powder 8 is stopped when the lowermost vessel is filled up with the powder, and then the vessels are placed in a dehydrogenation furnace 11 to dehydrogenate the powder.

7. 发明专利

JPH0734103A HYDROGENATION HEAT TREATMENT IN PRODUCTION OF TITANIUM POWDER AND DEVICE THEREFOR 失效
公开(公告)号：JPH0734103A
公开(公告)日：1995-02-03
申请号：JP17836293
申请日：1993-07-19
申请人： NIPPON STEEL CORP , TOHO TITANIUM CO LTD
发明人： TAKAKU NOBORU , FUJII HIDEKI , YAMAMIYA MASAO , TAMURA MICHIO , KAGOHASHI WATARU , FUKAZAWA HIDEKAZU , MURAYAMA RYOJI
IPC分类号： B22F9/30
摘要： PURPOSE:To provide a hydrogenation heat treatment in the production of a titanium powder and a device for the treatment, with which the remarkably improved heating and cooling capacities can be attained by applying the convection heat transfer through circulating gaseous hydrogen in the furnace, heating and cooling it in the process of this circulation and further increasing the furnace internal pressure. CONSTITUTION:At the time of performing the hydrogenation treatment by heating to a high temp. and cooling the raw material titanium 2 in a gaseous hydrogen atmosphere in the method for producing a titanium powder with hydrogenation-dehydrogenation process, the hydrogeation heat-treating furnace 1 is provided with a gaseous hydrogen circulation system having the heating device 7 and the cooling device 8 in the system. By using this system, the gaseous hydrogen for embrittling titanium in the furnace is circulated and concurrently heated or cooled to an appropriate temp. in the circulation system and blown into the raw material titanium 2, especially in its center part, and increased the furnace internal pressure to 1 atm to 10kgf/cm .

8. 发明专利

JPH05140708A MANUFACTURE OF ALPHA+BETA TYPE TITANIUM ALLOY SUBJECTED TO POWDER METALLURGY HAVING HIGH FATIGUE STRENGTH 失效
公开(公告)号：JPH05140708A
公开(公告)日：1993-06-08
申请号：JP14606791
申请日：1991-06-18
申请人： NIPPON STEEL CORP
发明人： FUJII HIDEKI , HORITANI TAKAO , YAMAZAKI TATSUO , TANAKA HIROSHI , FUJISAWA KAZUO , TAKAKU NOBORU
IPC分类号： B22F3/14 , C22C1/04 , C22F1/00 , C22F1/18
摘要： PURPOSE:To provide the method for manufacturing an alpha+beta type titanium allay subjected to powder metallurgy and excellent in fatigue strength as well as having sufficient ductility without remarkably increasing the manufacturing cost. CONSTITUTION:A compact obtd. by mixing Ti powder and alloy elemental powder and executing pressurizing or a compact obtd. by pressurizing alpha+beta type titanium al lay powder is held under heating to the beta transformation point or above to the beta transformation point +400 deg.C or below for 30min to 8hr, is cooled to the beta transformation point -200 deg.C or below at a cooling rate of 0.01 to 0.5 deg.C per second and is furthermore subjected to HIP treatment at the beta transformation point -200 deg.C or above to the beta transformation point -20 deg.C or below. Further, after the above stage, shot peening is moreover executed.

9. 发明专利

JPS6314047B2 失效
公开(公告)号：JPS6314047B2
公开(公告)日：1988-03-29
申请号：JP2087384
申请日：1984-02-09
申请人： NIPPON STEEL CORP
发明人： YASUZAWA NORIO , TAKAKU NOBORU , FUKUYASU KENJI
IPC分类号： C21D9/52 , C21D1/64 , C21D9/573

10. 发明专利

JPS6112830A Method for cooling steel material 失效
标题翻译：冷却钢材的方法
公开(公告)号：JPS6112830A
公开(公告)日：1986-01-21
申请号：JP13289684
申请日：1984-06-29
申请人： Nippon Steel Corp
发明人： YASUZAWA NORIO , TAKAKU NOBORU , TAKAHASHI TAKESHI
IPC分类号： B21B45/02 , C21D1/62 , C21D9/52 , C21D9/573
CPC分类号： C21D1/62 , B21B45/0224 , C21D9/5732
摘要： PURPOSE:To cool efficiently and uniformly a hot rolled steel materal with spouted water in a short cooling zone without forming soft spots by arranging unit coolers each having a specified flow density of cooling water in series in the forward direction of the steel material. CONSTITUTION:Unit coolers 6 are arranged in series in the forward direction of a steel material 5. Cooling water 3 is fed to the outer pipes 2 of the coolers 6 and spouted from many holes 4 in the inner pipes 1 to cool the steel material 5 passing through the inner pipes 1. Cooling water is spouted at >=250m /hr.m flow density, and the surface temp. of the steel material to be cooled is regulated to about 600-1,000 deg.C. The hot rolled steel material 5 can be cooled uniformly and efficiently.
摘要翻译：目的：通过在钢材的正向上排列具有指定的冷却水流量密度的单元冷却器，在短的冷却区域中，有效地均匀地冷却具有喷射水的热轧钢板，而不形成软斑。构成：单元冷却器6沿钢材5的向前方向串联布置。冷却水3被供给到冷却器6的外管2并从内管1中的多个孔4喷出以冷却钢材5 通过内管1.冷却水以> = 250m 3 / hr.m 2流量密度喷射，表面温度。待冷却的钢材调节至约600-1000℃。可以均匀且有效地冷却热轧钢材5。

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