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JP3079759B2 |
PURPOSE:To perform screw-in operation with always proper screw torque at the time of rotating an electrode by a motor to screw the threaded part thereof to the threaded part of the counterpart electrode for tightening. CONSTITUTION:In an...
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JP3077367B2 |
PURPOSE:To easily and rapidly perform positioning of electrodes at the time of joining a new electrode to the electrode already installed in an electric furnace. CONSTITUTION:A new electrode 12d to be joined to the electrode 12a already ...
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JP3077321B2 |
PURPOSE:To facilitate re-excitation by preventing slugs from sticking to electrodes when electric power is stopped in a waste fusion furnace fusion- processing the burned ash of city garbage and industrial wastes. CONSTITUTION:In a waste...
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JP3073606B2 |
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JP3071379B2 |
PURPOSE: To detect a surface level of a base metal with accuracy by allowing a detec tion material to fall and be placed in contact with the surface of molten slag to be held at a definite level and detecting differential potentiality be...
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JP3071377B2 |
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JP3066559B2 |
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JP3066207B2 |
PURPOSE: To provide an electrode structure for an outer cylindrical member and a method for the manufacture thereof, ensuring stable discharge state, particularly a less abrasion rate for a tungsten alloy cathode at the outer cylindrical...
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JP3060148B2 |
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JP2000180072A |
To provide a plasma melting furnace body for reducing the amount of consumption of a cathode for performing plasma arc discharge.A plasma melting furnace body 10 is provided with a furnace lid part 110 with a cathode 50 for performing pl...
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JP2000182799A |
To treat a to-be-treated material by suppressing heat loss caused by radiation energy from a high temperature to-be treated material and efficiently heating it.An inductive coupling plasma device having an electric insulation discharge t...
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JP3054827B2 |
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JP2000164344A |
To improve melting of the waste efficiently transmitting the arc heat without increasing the equipment cost by providing a compressed air blowout nozzle in a waste throw-in port provided at an upper part of a furnace, and controlling the...
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JP2000164345A |
To provide a melting device efficiently melting a object in a furnace.A flange 17 inserted with a DC plasma torch 16 is fitted to the flange 13 of a cylinder tube 11 forming a high-frequency induction thermal plasma torch. The DC voltage...
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JP2000161646A |
To greatly control the power while keeping the balance of the current of each phase, and to stably melt fly ash containing molten salts.In a melting control method, the power to be charged to an electrode 2 is controlled (using a power a...
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JP3049868B2 |
PURPOSE: To prevent the occurrence of an impact at the instant of the re-holding of electrodes or the extracting of a nipple in connecting the electrodes by load- detecting that the weight of the electrodes is supported by an electrode c...
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JP3049201B2 |
To plan a scheduled maintenance of an anode block and an extension of life by uncovering top portions of damaged anode pins, grafting new anode pins onto the damaged pins by locating the pins by means of a grid-like iron flame and fillin...
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JP2000150139A |
To provide an electric resistance type ash melting furnace capable of efficiently melting ash and stably extracting a metal layer deposited on the bottom of the furnace. This electric resistance type ash melting furnace is equipped with ...
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JP3045949B2 |
PURPOSE: To obtain a graphite electrode for electric steel manufacturing arc furnace which is of a low cost, has an effect to an oxidation consumption countermeasure, and contributes for reducing the power source unit. CONSTITUTION: As t...
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JP3045262B2 |
PURPOSE: To keep the total supply current of all bottom electrodes constant, and prevent a drop in dissolution efficiency, even if a material having high resistance such as slag covers the bottom electrodes by applying such a circuit con...
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JP3042919B2 |
A plasma torch comprises a torch housing, rear and front tubular electrodes coaxially mounted within such housing with a gap therebetween, both electrodes being fabricated from copper having tubular inserts of refractory material, a vort...
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JP3041317B2 |
PURPOSE: To fix reactive power by leaving its reference value left as calculated from a load current setting signal, load voltage setting signal and an AC input voltage setting signal to a rectifying circuit in a predetermined operation ...
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JP2000133436A |
To provide a graphite electrode for an electric furnace having sufficient contact area of a graphite electrode body and graphite nipple, dispersed thermal and mechanical stress and increased absolute strength of a screw thread. In a grap...
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JP2000130960A |
To improve the durability of a multi contact-pin furnace bottom electrode, and to extend a life by providing a plurality of conductive contact pins that pass through a support substrate, an unshaped or monolithic refractory, and an elect...
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JP2604321Y2 |
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JP3037432B2 |
A method and apparatus for processing a greyscale input of an image, particularly of a shipping label, into a binary output image in which foreground information is segmented from the background information and contrasts between adjacent...
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JP2000111028A |
To prevent a stray current by providing an annular insulating member for electrically insulating between a plasma electrode and a furnace bottom electrode at a connector of a furnace cover to a furnace body.In the ash melting furnace, a ...
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JP3035125B2 |
PURPOSE: To improve the durability of a cathodic electrode by providing an anodic electrode and the cathodic electrode with a certain interval in the upper part of a tundish. CONSTITUTION: The tundish 1 is formed by lining refractories 3...
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JP2000088462A |
To effectively agitate molten steel, to perform an energy conservation and to shorten an operating time by providing a plurality of electrodes so that polarities of the one electrode and the other are different to be capable of being con...
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JP2000077180A |
To stabilize operation of a three-phase alternating current electric furnace, by eliminating frequent interruption of the operation by a vacuum breaker actuated by disturbance caused by the fall of fused materials or the like. In this th...
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JP3015572B2 |
PURPOSE:To prevent a cathode from thermal deformation and secure the linearity despite repetitive heating and cooling by inserting an electron emitting material to the cathode body in such a way as movable in the longitudinal direction. ...
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JP3015569B2 |
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JP2000052038A |
To provide a welding or cutting device for preventing a base material from being stained with water, occurrence of a welding failure and a damage of a decompression equipment by simplifying a mechanism for taking out a water in a water c...
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JP3010600B2 |
Two DC electric arc furnaces are provided side by side. The both DC electric arc furnaces are connected by a duct. Each of two power source apparatuses is mounted near and associated with each of the DC electric arc furnaces. The anodes ...
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JP2000048949A |
To properly lift or lower an electrode invariably under various conditions and stabilize the fed electric power by providing a low-sensitivity zone slowly responding to the fluctuation of impedance in a furnace and lifting or lowering th...
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JP2000038622A |
To exactly refine high purity transition metals by subjecting the transition metals of groups VIII, Ib, IVa, Va, VIa and VIIa to hydrogen plasma arc melting or hydrogen atmosphere arc melting to remove non metallic impurities such as oxy...
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JP2000039118A |
To achieve intentionally easier withdrawal of a CO gas generated from a granule layer during the reduction melting by enabling charging of a granular material during the operation as well to realize submerged arc electric melting which a...
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JP3005641B2 |
To precisely and simply set a consumable electrode in concentric state in a copper crucible of a consumable electrode type arc melting furnace. An alignment device 10 for positioning and supporting the consumable electrode 6 to the cente...
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JP3002356B2 |
PURPOSE:To align a new electrode and a working electrode reliably in a short time in a simple structure by remote control without requiring a complicated tilting driving device and a high-degree control system or a position detecting sys...
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JP3002769B2 |
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JP3001193B2 |
To suppress LF electrode consumption and prevent possible steam explosion. After a ladle is transported from the position under a carbon electrode 15 on completion of metal refining, a cooling water receiving member 24 is positioned unde...
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JP3001068B2 |
PURPOSE:To provide a welding equipment provided with an entirely new small- sized lightweight and efficient welding power source to convert DC electric power into single-phase or polyphase AC electric power. CONSTITUTION:The welding powe...
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JP2994834B2 |
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JP2994475B2 |
The metallurgical vessel, such as a direct-current arc furnace, comprises a metal housing (1) lined on its inside with refractory material (2), at least one electrode (3) passing through the bottom of the vessel and connected to a termin...
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JPH11342482A |
To restrain the occurrence of a blow hole and spatters at a molten joined portion by carrying out thermal irradiation for melting the joined portion of a sintered compact and a metallic material discontinuously with respect to time. The ...
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JP2989834B2 |
The invention is a novel Soderberg electrode paste composition. The composition is a mixture comprising carbonaceous aggregate, novolac resin binder, plasticizer and optionally hexamethylenetetramine. The novolac resin of the binder has ...
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JP2989673B2 |
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JP2988806B2 |
PURPOSE: To further reduce running cost by using steam as a part of inactive gas which prevents the consumption of plasma electrodes resultant from oxidation in an ash melting furnace having a pair of plasma electrodes which generate pla...
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JP2984173B2 |
PURPOSE: To provide a ladle refinery electrode apparatus which is capable of preventing a refractory layer of a ladle from being damaged restricting spark generation between fire prevention boards and of contributing to the refractory la...
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JPH11323534A |
To reduce the fluctuation of loads to an inputting power source and to execute carbon vapor deposition by rectifying the alternating current of a commercial power source, charging a capacitor with it as a certain electric current and ele...
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