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公开(公告)号：JPS59153807A
公开(公告)日：1984-09-01
申请号：JP2731883
申请日：1983-02-21
发明人： KOBAYASHI TAKAHIRO , YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , FUKUTAKE SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI , TSUKAGOSHI NOBUHIRO
IPC分类号： B22F9/14
CPC分类号： B22F9/14
摘要： PURPOSE:To provide a titled device which prevents sticking of the ultrafine metallic particles generated in the stage of arc discharge on an electrode in producing the ultrafine metallic powder by utilizing the arc discharge by curving an electrode support to the outside from the smoke flow region of the ultrafine metallic particles. CONSTITUTION:An electrode for cathode is formed of a main electrode body 3A disposed in the same direction as the direction of an arc column 6 to be generated in the direction perpendicular to a metallic material 5, a heating electrode body 3B bent at a right angle to the terminal of the body 3A and an electrode support 3C. The body 3C among these bodies is positioned outer than the region of the smoke flow 7 of the ultrafine metallic particles generated by the material 5 and is supported by an electrode supporting frame 2. The ultrafine metallic particles generated from the material 5 by arc discharge in such mechanism ascends in the form of the smoke flow 7 and is cooled by an atmosphere ga. The particles are captured with a filter, etc. and the ultrafine metallic particles are produced. The consumption and deterioration of the electrode are prevented by such device.
摘要翻译： 目的：提供一种标题装置，其通过利用电弧放电来防止在电弧放电阶段中产生的超细金属颗粒在电极上的粘附，该电极通过将电极支撑件从外部的烟流区域弯曲到外部 超细金属颗粒。 构成：用于阴极的电极由主电极体3A形成，主电极体3A沿与垂直于金属材料5的方向产生的电弧柱6的方向相同的方向设置，加热电极体3B以直角弯曲 到主体3A的端子和电极支撑件3C。 这些主体中的主体3C位于由材料5产生的超细金属颗粒的烟雾流7的区域的外侧，并被电极支撑框架2支撑。由材料5通过电弧放电产生的超细金属颗粒 这种机构以烟雾流7的形式上升，并被气氛ga冷却。 用过滤器等捕获颗粒，并生产超细金属颗粒。 通过这种装置防止电极的消耗和劣化。
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2.发明专利
公开(公告)号：JPS59140304A
公开(公告)日：1984-08-11
申请号：JP1393983
申请日：1983-01-31
发明人： KOBAYASHI TAKAHIRO , YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , FUKUTAKE SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI , TSUKAGOSHI NOBUHIRO
CPC分类号： B22F9/14
摘要： PURPOSE:To prevent the alloying the main body of a cathode with ultrafine metallic particles by composing a cathode of the main body of the cathode arranged in the same direction as an arc and a heat generating electrode body arranged vertically to the main body, and keeping continually the main body of the cathode at a high temp. CONSTITUTION:A cathode 3 supported by an electrode supporting rack 2 is composed of the main body of the electrode 3A opposed to a metallic material 5 placed on a steel hearth 4 used for an anode, and a heat generating electrode body 3B arranged vertically to the end of the main body of the electrode 3A. In this state, an electric current is impressed between the metallic material 5 and the main body of the electrode 3A to form an arc column 6, and the smoke stream of ultrafine metallic particles is generated. At this time, since the temp. of the main body of the electode 3A part is increased to about 2,800-3,300 deg.C, the ultrafine metallic particles are neither deposited nor alloyed. As the heat generating electrode body 3B is kept at
摘要翻译： 目的：为了防止阴极主体与超细金属颗粒的合金化，通过构成与弧形方向相同的阴极排列的阴极和与主体垂直设置的发热电极体，并保持 不断地在高温下阴极的主体。 构成：由电极支撑架2支撑的阴极3由放置在用于阳极的钢底座4上的金属材料5相对的电极3A的主体和与该阳极的垂直方向配置的发热电极体3B构成。 电极3A的主体的端部。 在这种状态下，在金属材料5和电极3A的主体之间施加电流以形成电弧柱6，并且产生超细金属颗粒的烟雾流。 在这个时候， 的电极3A部分的主体增加到约2800-3300度，超细金属颗粒既不沉积也不合金化。 当发热电极体3B保持在<= 1500℃时，即使超细金属颗粒沉积在其上，主体3B也不合金化。 以这种方式，可以防止阴极3的烧蚀和劣化。
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公开(公告)号：JPS59140303A
公开(公告)日：1984-08-11
申请号：JP1138883
申请日：1983-01-28
发明人： YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , KOBAYASHI TAKAHIRO , FUKUTAKE SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI
摘要： PURPOSE:To manufacture ultrafine metallic particles having uniform particle size at low cost by generating an arc column between a metallc material mounted on an anode and a cathode, throttling the formed anodic flame consisting of a metallic vapor stream with a cooling rod, and collecting the particles in a filter. CONSTITUTION:An arc column 6 is generated between a metallic material 4 mounted on an anode 3 and a cathode 5 by impressing arc voltage to a power source 2, and the metallic material 4 is heated and melted. An anodic flame 9 is formed by the metallic vapor stream. The anodic flame 9 is sucked by a pump 7, and sent upward inside a vessel 1. A cooling rod 10 cooled forcibly by water or the like is inserted into the upward stream of the anodic flame 9. The metallic vapor in the anodic flame 9 is cooled, condensed and solidified, while the anodic flame 9 passes through the circumference of the cooling rod 10. The solidified ultrafine metallic particles having uniform particle size are collected in a filter 8 while circulating by the suction of the pump 7. In this way, the ultrafine metallic particles having a sharp particle size distribution and high coercive force are obtained.
摘要翻译： 目的：通过在安装在阳极和阴极之间的金属材料之间产生弧形柱，以低成本制造具有均匀粒度的超细金属颗粒，将形成的由金属蒸汽流组成的阳极火焰与冷却杆进行节流，并收集 过滤器中的颗粒。 构成：通过向电源2施加电弧电压，在安装在阳极3上的金属材料4和阴极5之间产生电弧柱6，金属材料4被加热熔化。 阳极火焰9由金属蒸气流形成。 阳极火焰9被泵7吸入，并在容器1内向上方送出。用水等强制冷却的冷却杆10插入到阳极火焰9的上游中。阳极火焰9中的金属蒸气 被冷却，冷凝和固化，同时阳极火焰9通过冷却杆10的圆周。具有均匀粒度的固化的超细金属颗粒在循环泵7的同时循环中被收集在过滤器8中。以这种方式 ，获得具有尖锐的粒度分布和高矫顽力的超细金属颗粒。
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公开(公告)号：JPS6242002B2
公开(公告)日：1987-09-05
申请号：JP1138883
申请日：1983-01-28
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公开(公告)号：JPS59140307A
公开(公告)日：1984-08-11
申请号：JP1394283
申请日：1983-01-31
发明人： YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , KOBAYASHI TAKAHIRO , FUKUTAKE SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI
摘要： PURPOSE:To obtain ultrafine metallic powder having uniform particle size at low cost by blowing a gas against a metallic material, an arc column and an anodic flame, and providing a cooling rod in the anodic flame to control the average particle size and the particle size distribution of the ultrafine metallic powder. CONSTITUTION:An arc column 10 is generated by arc discharge between a metallic material 11 on a water-cooled copper hearth 4 and a cathodic electrode 3. The metallic material 11 is melted by the arc column 10, and an anodic flame 12 for forming ultrafine metallic powder is generated and sent to a filter 6 by a circulation gas. At this time, the circulating gas is blown against the metallic material 11, the arc column 10 and the anodic flame 12 from nozzles 13 through an introducing tube part 13a to concentrate the arc column 10 upon the surface of the metallic material 11. A cooling rod 14 is inserted into the anodic flame 12 to attract the anodic flame to the circumference of the cooling rod 14. Thus the anodic flame 12 is throttled and sent upward in the vessel. By this method, the ultrafine metallic powder having optimum average particle size and particle size distribution is obtained.
摘要翻译： 目的：通过向金属材料，弧形柱和阳极火焰吹气，以低成本获得具有均匀粒径的超细金属粉末，并在阳极火焰中提供冷却棒以控制平均粒径和粒径 分布超细金属粉末。 构成：通过在水冷铜底座4上的金属材料11和阴极电极3之间的电弧放电产生电弧柱10.金属材料11被弧形柱10熔化，并且形成用于形成超细的阳极火焰12 产生金属粉末并通过循环气体送入过滤器6。 此时，循环气体通过导管部13a从喷嘴13向金属材料11，电弧塔10和阳极火焰12吹送，以将电弧柱10集中在金属材料11的表面上。冷却 杆14插入阳极火焰12中以将阳极火焰吸引到冷却杆14的周边。因此，阳极火焰12被节流并在容器中向上发送。 通过该方法，得到具有最佳平均粒径和粒径分布的超细金属粉末。
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公开(公告)号：JPS59140305A
公开(公告)日：1984-08-11
申请号：JP1394083
申请日：1983-01-31
发明人： UNOSAWA YASUHIRO , YOSHIKAWA TAKAMASA , TAKASUGI SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI , TSUKAGOSHI NOBUHIRO , KOBAYASHI TAKAHIRO , FUKUTAKE SATORU
摘要： PURPOSE:To manufacture ultrafine metallic particles having high coersive force by cooling the ultrafine metallic particles obtained by generating an arc between a cathode and a metallic material with a cooling rod wherein plural couples of permanent magnets are arranged so that the same poles may be opposed to each other. CONSTITUTION:In the formation of ultrafine metallic particles by generating an arc column between a metallic material 5 on a copper hearth 4 and a cathode, a cooling rod 10 is inserted into the formed smoke stream. The cooling rod 10 is composed of a supporting cylindrical shell 11 and a lid body 16, and an inlet 12 and an outlet 13 for introducing cooling water are provided to the lid body 16. Several couples of annular permanent magnets 14A and 14B, wherein mutually opposed poles are magnetized to have the same pole, are arranged in the supporting cylindrical shell 11 in the lengthwise direction of the axis through spacers 15 formed of a nonmagnetic body. The distance L1 between the copper hearth and the bottom surface of the lowermost permanent magnet 14A is regulated to about 1-5cm, and the distance L2 to the upper surface of the uppermost permanent magnet 14B is regulated to about 50cm.
摘要翻译： 目的：通过冷却通过在阴极和金属材料之间产生电弧而获得的超细金属颗粒，通过冷却棒来制造具有高强度力的超细金属颗粒，其中多个永久磁铁配置成使得相同的极可以与 彼此。 构成：在通过在铜底座4上的金属材料5和阴极之间产生弧形柱来形成超细金属颗粒时，将冷却杆10插入形成的烟雾流中。 冷却杆10由支撑圆筒壳11和盖体16构成，并且用于引导冷却水的入口12和出口13设置到盖体16上。几对环形永磁体14A和14B，其中相互 相对的磁极被磁化成具有相同的极点，通过由非磁性体形成的间隔件15沿着轴的长度方向布置在支撑圆筒形壳体11中。 铜炉底与最下面的永磁体14A的底面之间的距离L1被调节到大约1-5cm，并且将最上面的永磁体14B的上表面的距离L2调节到约50cm。
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公开(公告)号：JPS5985808A
公开(公告)日：1984-05-17
申请号：JP19452782
申请日：1982-11-08
发明人： YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI , TSUKAGOSHI NOBUHIRO
IPC分类号： B22F9/14
摘要： PURPOSE:To produce an ultrafine particulate metal having a uniform size in a device for making use of arc discharge in producing an ultrafine ferromagnetic metal by providing an adhering means for the ultrafine particulate metal above the arc part of a device vessel. CONSTITUTION:A tungsten cathode 3 is mounted at the top end of a supporting bar 2 and is disposed in a refractory vessel. A ferromagnetic metal 5 such as Fe, Ni or the like to be ground is placed on the copper hearth, as an anode, in the bottom of the vessel. Pure gaseous hydrogen or a gaseous mixture of pure hydrogen and inert gas such as Ar, He or the like is introduced through an inlet 1A into the vessel and is discharged from the outlet in the upper part. An arc 6 is discharged between the cathode 3 and the metal 5 as an anode. The metal 5 is heated and melted by the arc 6 and ascends together with the inert gas introduced therein in the form of ultrafine particles. A water-cooled adhering means 8 made of copper or stainless steel is placed in the upper part in the vessel to pick up and capture the ascending ultrafine particulate metal. The ultrafine particulate metal having a uniform grain size is produced with good efficiency.
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公开(公告)号：JPS5985807A
公开(公告)日：1984-05-17
申请号：JP19452682
申请日：1982-11-08
发明人： YOSHIKAWA TAKAMASA , UNOSAWA YASUHIRO , TAKASUGI SATORU , OGASAWARA KIYOHIDE , ITOU HIROSHI , TSUKAGOSHI NOBUHIRO
摘要： PURPOSE:To produce ultrafine metallic particles having a uniform grain size at a high yield in a device for making use of arc discharge in pulverizing a ferromagnetic metal to ultrafine particles by providing a filter enclosing an arc part. CONSTITUTION:A tungsten cathode 3 is supported by a supporting rod 2 in a hermetic refractory vessel 1 and a copper hearth 4 as an anode is placed in the lower part thereof. The inside of the vessel 1 is maintained under an atmosphere of pure gaseous hydrogen or a gaseous mixture of pure hydrogen and inert gas such as gaseous Ar, gaseous He, etc., wherein a ferromagnetic metal 5 such as Fe, Ni or the like is placed and arc discharge 6 is generated between said metal as the anode and the cathode 3. The metal 5 is melted by the arc 6 to form the ultrafine particles which ascend in an arrow (a) direction and descend in the direction of an arrow 12 after the particles are cooled in the upper part. A cylindrical filter 7 made of Ti, Ta, etc. is placed around the arc 6 in this case of capture the ultrafine particulate metal entering the arc part again after descending. The ultrafine particulate metal is formed at a high yield without being sintered again by the arc.
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公开(公告)号：JPH034602B2
公开(公告)日：1991-01-23
申请号：JP19452682
申请日：1982-11-08
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公开(公告)号：JPS6242003B2
公开(公告)日：1987-09-05
申请号：JP1394083
申请日：1983-01-31
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