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JP2002246171A |
To provide an artificial graphite electrode for a steel making electric arc furnace having good spalling resistance and capable of greatly reducing generation of a tip cracks or a transverse cracks of a screw during use.In this artificia...
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JP2002526739A |
A direct-current arc furnace for producing steel has a smelting vessel with electrodes, tapping openings for the molten mass and slag, and a device for a direct removal of exhaust gases. The smelting vessel is extended upwardly by a cent...
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JP3315706B2 |
PURPOSE: To easily guide an electrode for following in a metallurgical furnace by canceling the self lock of a traction member, and centering a device in the horizontal direction from the outside. CONSTITUTION: A left side-forming device...
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JP2002231793A |
To provide a wafer-supporting member that can prevent cracks from being produced near the corner of a conductive film as an internal electrode and can be used for a long time even under environmental conditions of a repeated heat cycle.I...
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JP3314346B2 |
PURPOSE: To economically ignite microwave plasmas so that prevent no undesirable reaction products in the reaction chamber impair the quality of its coating film. CONSTITUTION: The plasma is ignited on the outlet side of the reation cham...
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JP2002213721A |
To provide an ash melting furnace for improving the melting efficiency of incineration ash.The ash melting furnace comprising a furnace body having an incineration ash throwing opening for throwing incineration ash inside, and a heating ...
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JP2002208472A |
To provide an arc furnace device enabled to make the setting error small for the arc current, caused by the output voltage fluctuation of a furnace transformer.Electrodes 11 of an arc furnace 1 is elevated by an electrode elevating devic...
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JP3307010B2 |
PURPOSE: To eliminate human labor and perform re-grasping of an electrode by remote handling by feeding a current to the electrode through a main gripper, and holding the electrode with an aux. gripper supported by a stopper at the time ...
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JP3302710B2 |
In order to heat a heating material (3) or a substrate to be coated in a vacuum chamber (1) or in a bell jar uniformly by means of gas discharge or low-voltage arc discharge, it is proposed that at least one locally variable and/or displ...
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JP2002195763A |
To provide means, capable of safe operation by solving the problem of abnormal short life time of the bottom of a direct current electric furnace.The problem is solved by a direct-current electric furnace bottom electrode. An electrode c...
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JP3300720B2 |
PURPOSE: To provide a supporting arm which has a simple, firm, and light weight structure and can supply high electric power in spite of easy maintenance. CONSTITUTION: In an arc furnace constituted as a hollow formed member constituted ...
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JP2002181453A |
To prevent pollution of a molten substance due to collapse of an ingot shelf at vacuum arc melting (aVAR process = Vacuum Arc Remelting).The VAR device includes a furnace chamber 14, a consumption electrode 12 formed of a material remelt...
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JP2002181452A |
To provide a composite electric furnace and its operating method wherein incinerated ash can be processed at an operation cost lower than a conventional one as the degree of capacity reduction and non-noxiousness can be maintained for pr...
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JP3294185B2 |
To enable operation even if it is supplied with any power of a lower voltage system, a high voltage system, and another high-voltage system at higher voltage than that of the high voltage system When the voltage of power input terminals ...
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JP2002168417A |
To provide the facilities and method for treating waste that can treat the waste without using a large amount of raw materials such as oxygen and coke and with simple facilities.Facilities having a melting chamber 1 and a spare chamber 2...
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JP3291800B2 |
PURPOSE: To easily form the cooling passage having cooling efficiency higher than that of conventional one of a constrictor disk. CONSTITUTION: The annular recessed part 19 is provided to one side surface of the constrictor disk 12 of a ...
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JP2002160045A |
To provide a continuous caster and casting method for a large cross section cast piece, free from casting defects and superior in inner quality.A tundish 2, a mold 3, a carriage 4 to draw and guide a molten steel vertically downwards fro...
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JP2002156186A |
To provide melting equipment and a treatment method which enable efficient execution of both melting of a cold iron source and treatment of waste or enable efficient treatment of car scraps subjected to shredding, without causing a disad...
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JP3287140B2 |
PURPOSE: To provide an optical beam heating device capable of reducing the preheating time, and early stabilizing the output after the preheating. CONSTITUTION: The temperature in a light emitting lamp 1 can reach the thermally saturated...
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JP3285193B2 |
To set electrodes to a proper position in melting slag, and prevent abrasion of the electrodes and reduction in durability of a melting tank by detecting a sudden change in an electric current or voltage when the tip of the electrode mak...
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JP2002147960A |
To perform switching of power charge and additional charge of a material invariably at proper timing through accurate detection of a melting state in a furnace.In an arc furnace where the height of an electrode 5 is automatically control...
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JP2002143991A |
To raise impressed electric power and to improve plasma heating ability by easily raising the impressed electric power in heating the molten steel in a tundish by a twin torch plasma heater.When the molten steel 5 in the tundish 1 is hea...
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JP2002115822A |
To provide equipment and method for waste disposal, in which waste can be disposed by simple equipment without using a great amount of row material such as oxygen and coke.In the equipment and method for waste disposal, there are provide...
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JP3275440B2 |
PURPOSE: To shorten an electrode connection time and also facilitate the automation of electrode connection by rotating a rotation mount supporting a screw apparatus and gripping a new electrode by a grip apparatus attached to this rotat...
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JP2002110399A |
To provide a plasma device which is used in the melting furnace for smelting of metal or making harmless the incinerated ashes by melting, that is capable of heating and melting effectively regardless of conductivity or non-conductivity ...
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JP2002510786A |
A base of a metallurgical vessel having a direct-current arc device whose cathode projects into the vessel and in whose fire-resistant lining on the base at least one anode is arranged, one end of which, passing through the vessel wall, ...
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JP2002508496A |
Specialty metals and alloys are melted in a crucible typically holding no more than about 100 lbs. of the metal and disposed in a furnace the interior of which is filled with a desired, e.g. inert, gas and subjected to a vacuum in the ra...
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JP2002075634A |
To enable to safely and efficiently perform an supply of a graphite electrode to an electrode step addition device installed at upstairs by a worker.This is an electrode supplying device 1 wherein the new graphite electrode 2 is supplied...
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JP2002061824A |
To ensure insulation between a plasma torch and a melting furnace for melting incineration ash, even dispensing with a periodic dust-cleaning operation by improving the insulation structure between the plasma torch and the furnace.The pl...
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JP3257782B2 |
To obtain a device treating a material to be treated with an arc by using a polyphase multielectrode. Plural electrodes 1a to 1c are arranged in a water tank 30, the tank 30 is filled with water 20 to submerge the electrodes 1a to 1c in ...
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JP3257682B2 |
PURPOSE:To efficiently convert a direct current to a single phase or a multi- phase alternate current with a small type and a light weight of a device by impressing each phase of a multi-phase alternate current power source, a direct cur...
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JP2002022365A |
To provide a continuous arc plasma heater which can heat a work continuously with high productivity without limiting the characteristics of the work.The continuous arc plasma heater comprises a heating chamber 1 for moving a work 8 while...
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JP2002014252A |
To heat each of multiple optical fibers by electric discharge more uniformly.The device is provided with V groove blocks 14, 24 into the V grooves of which each of the multiple optical fibers 10, 20 is put and by which these optical fibe...
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JP2002011344A |
To provide a method capable of continuously and uniformly modifying the surface of a granular material by pulse high voltage corona discharge.In a treatment method for performing the surface modification of the granular material on an op...
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JP3244593B2 |
PURPOSE: To easily heat molten slag having high electric resistance with Joule heat and also easily hold a temperature thereof at a fixed level by inserting electrode torches into the molten slag after an object to be melted has been onc...
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JP3240191B2 |
PURPOSE: To prevent generation of an electric arc by the presence of melted lead emerging from scrap by providing an annular member made of low melting point metal in the periphery of a metal rod of an electrode, and by extending the ann...
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JP2001340943A |
To provide a method for controlling temperature of the molten steel in a tundish which controls a molten steel temperature to a predetermined target temperature in the initial stage when the molten steel temperature in the tundish is uns...
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JP2001317882A |
To substantially entirely extinguish a treating residue by gasifying and thermochemically decomposing an unnecessary material or a waste produced by an industrial activity, manufacturing activity, commercial and industrial activity, cult...
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JP2001300731A |
To provide a heating device (10) and a method for performing heat treatment before welding, welding and heat treatment after the welding of a superalloy product in a single casing (12) while avoiding the oxidation of the superalloy produ...
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JP3214699B2 |
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JP3209845B2 |
PURPOSE: To equalize the abrasion of the refractory lining of a DC arc furnace by retaining a cathodic electrode at the center of the furnace on one hand, and arranging an anodic bottom electrode device leading from a container wall to t...
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JP3210226B2 |
To develope a high cooling effect and restrain the unit of refractory by providing a small ceiling refractory with a multitude of cooling holes bored in up-and-down direction and to permit stabliized operation of an arc furnace by elimin...
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JP2001250673A |
To provide an electrode lifting control device for an alternating current arc furnace making the grade of ware of electrodes for respective phases almost uniform, at the alternating current arc furnace.The electrode lifting control devic...
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JP3206733B2 |
To output a tube load current of a prescribed value even if input voltage drops and to prevent input current from becoming excessive by controlling a DC/AC converter so that input current from an AC power source becomes equal to referenc...
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JP3197657B2 |
PURPOSE: To continuously and uniformly heat and treat a comparatively large quantity of a material to be treated by vertically arranging electrode units for arc-discharging the material to be treated delivered from a delivering device in...
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JP3198593B2 |
PURPOSE: To control the discharge power to the required value in an ash melting furnace melting the burned ash of city garbage and industrial wastes via an arc discharge or resistance heating. CONSTITUTION: The burned ash 9 of city garba...
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JP2001511241A |
Slag from a pool of molten slag floating on molten metal in a plasma arc treatment chamber is removed by providing a slag container located inside the chamber which has a slag intake pipe extending from a bottom of the container downward...
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JP2001212669A |
To provide a power supply unit avoiding influence of fluctuations in electric voltage of electric power of power supply.Electric voltage for electric power of power supply, which is input to an input terminal 1, is detected by a detector...
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JP2001508860A |
An electric arc furnace having a partially insulated electrode produces molten metal such as foundry iron from an iron source where little or no slag is produced. The furnace includes at least one insulated electrode assembly for immersi...
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JP2001508530A |
An arc furnace which includes a shell with a hearth, a roof for the shell, the roof including a plurality of segments which are substantially electrically isolated from each other and from the shell, an electrode and a refractory section...
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