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JPH1116936A |
To correct automatically the amount of a discharge gap between the point of a wire and a discharge electrode so that the amount of the discharge gap is within a prescribed range and to form always uniform and favorable balls by a method ...
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JPH11500575A |
A bottom electrode for an arc furnace operated with direct current consists of two parts made of different materials that may be joined to each other. One wearing part made of a material that is comparable to the molten mass is arranged ...
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JP2842769B2 |
PURPOSE:To reduce a flicker of AC power supply system even when load impedance is rapidly changed by adding a constant current phase control signal and constant wattless power phase control signal, and generating an ignition pulse to a r...
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JP2841569B2 |
PURPOSE:To control a heat load in a furnace and achieve uniform heating, by blowing a gas or a powder in a single or a plurality of directions so as to deflect an arc or a plasma from a hot spot area where heat flow is greater toward an ...
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JPH10335058A |
To achieve improvement of stability of the operation of a furnace and decrease of load of an operator by enabling automatically to set an operation sensitivity optimum value in arc furnace electrode lifting control. An electrode lifting ...
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JP2587445Y2 |
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JPH10513255A |
The present invention provides tunable waste conversion systems and apparatus which have the advantage of highly robust operation and which provide complete or substantially complete conversion of a wide range of waste streams into usefu...
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JP2832539B2 |
The invention relates to a thermal treatment installation for molten metal having a metallurgical vessel for receiving the molten metal and a direct-current arc heating device, which is separate or operates as an integrated component and...
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JP2834615B2 |
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JPH10321364A |
To provide a graphite electrode for an electric furnace capable of preventing the breakage and coming off of a connecting part between graphite electrodes to which mechanical, electrical loads are applied. In a graphite electrode for an ...
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JPH10317046A |
To improve the secondary combustion ratio, heat transfer efficiency in a furnace and the sensible heat of exhaust gas and the heat transfer efficiency of arc heat and to prevent the conduction of large short-circuit current at the time o...
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JP2828478B2 |
PURPOSE:To prevent deterioration of power factor during steady operation and to reduce economical burden due to power factor improving facility by stopping a main converter and operating only an auxiliary converter when the arc current d...
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JPH10311681A |
To provide an arc furnace which has excellent recovery efficiency of the heat energy of an arc and the sensible heat and latent heat of exhaust gases, suppresses the short circuit current of scrap and movable electrodes, and has good pro...
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JPH10294175A |
To stabilize the temperature of gas and to prevent melting of a device by stabilizing an arc. An arc holding part 2 is placed between an anode part 1 and a cathode part (5), and as gas is made to flow from one anode part 1 to the other c...
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JPH10294174A |
To effect stable arc ignition in a DC arc furnace by suppressing a rush current which is generated during the transition from arc extinction to the short circuit of load at the time of arc ignition. Power is supplied to an arc furnace 3,...
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JPH10281647A |
To provide a furnace bottom electrode of a direct current electric furnace having a long lifetime by preventing floating and dissipation of a sleeve brick caused by a selective erosion of a joint portion of the sleeve brick and an infilt...
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JP2583234Y2 |
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JP2813398B2 |
An electric arc generating device including, a first electrode (1) and at least two further electrodes (2, 3, 4). A source of electrical power (11) is connectable to said electrodes so as to cause an arc to burn between the first electro...
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JP2581902Y2 |
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JPH10509836A |
PCT No. PCT/AT95/00236 Sec. 371 Date Jun. 2, 1997 Sec. 102(e) Date Jun. 2, 1997 PCT Filed Nov. 30, 1995 PCT Pub. No. WO96/17091 PCT Pub. Date Jun. 6, 1996A d.c. arc furnace for metallurgical purposes includes two or more electrodes arran...
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JPH10509837A |
PCT No. PCT/AT95/00237 Sec. 371 Date Jun. 2, 1997 Sec. 102(e) Date Jun. 2, 1997 PCT Filed Nov. 30, 1995 PCT Pub. No. WO96/17092 PCT Pub. Date Jun. 6, 1996A plant for producing metal includes a electricity supply system and a direct-curre...
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JP2794774B2 |
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JP2796156B2 |
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JP2795811B2 |
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JP2787075B2 |
PURPOSE:To keep easily a clearance constant between a sample and an elec trode within a vacuum container, and perform a smooth arc melting operation for the sample. CONSTITUTION:A cylindrical member 30 with an outer diameter thread 32 is...
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JPH10208872A |
To provide an electrode interval holding device which is used in an electrode support device of an arc furnace and by which an electric power unit requirement can be improved and productivity of the arc furnace can be improved by arrangi...
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JP2783029B2 |
PURPOSE: To effectively execute degassing of molten metal by pouring the molten metal into a vessel reducing the pressure through a nozzle, making fine of the molten metal, irradiating the dropped fine molten metal with a plasma and rais...
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JP2781332B2 |
Electrode joint for threadably joining two abutting carbon electrode sections is provided with an elongate carbon fastening element which is force fitted into a passage extending from outside of the electrode joint through a portion of t...
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JP2780430B2 |
PURPOSE:To smoothly screw an electrode in another electrode by lowering an expan sion case, and engaging the locking piece of the case with the engaging piece of an electrode holder. CONSTITUTION:A nipple 22 is screwed in a new electrode...
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JPH10189290A |
To set an attachment point movable downstream in an axial line direction of a negative electrode cylinder. A current takeout member is connected to an upstream end part of a negative electrode cylinder 2, and from an attachment point 28 ...
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JPH10189236A |
To provide an arc furnace capable of efficiently operating by arranging a rectifying device between an upper electrode and a bottom electrode of the arc furnace and a secondary side transformer of an electric facility through a switch, a...
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JP2576304Y2 |
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JP2769325B2 |
PURPOSE:To prevent interruption of the generation of an arc by a method wherein while a moving electrode is positioned between a reference point A and a point B above by specified distance, control of an electrode position is effected by...
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JP2575361Y2 |
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JP2769328B2 |
PURPOSE:To shorten smelting time by supplying the maximum electric power to a movable electrode when an arc is stabilized. CONSTITUTION:When a DC voltage is supplied to a movable electrode 5 and an arc Q is generated between the movable ...
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JP2769327B2 |
PURPOSE:To prevent interruption of the generation of an arc and to enable excellent control of elevation of an electrode by a method wherein during boring, the melting speed of a substance to be melted is added as a correction amount to ...
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JP2769326B2 |
PURPOSE:To improve productivity and an original unit and to stabilize a charge power by a method wherein the voltage of a moving electrode increased responding to an increase amount of a moving electrode is detected, and when an increase...
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JPH10160352A |
To provide a protective material for a furnace bottom electrode refractory having satisfactory electric conductivity without contaminating molten steel by preventing erosion by vapor phase oxidation and iron oxide before wasting in the c...
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JPH10160353A |
To prevent consumption of a graphite electrode due to oxidation consumption by a method wherein cooling water is stored in a gap between a cylinder body and an electrode surface, the middle of the electrode is impregnated with cooling wa...
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JPH10160351A |
To prevent incurring of melting damage due to oxidation of a gas phase and an iron oxide before refractories are worn by a method wherein a powdery material consisting mainly of Fe and containing specified per cent C is sprayed and accum...
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JPH10162951A |
To enable proper fusion to be performed by frequency-analyzing variation of a current to be supplied to an electrode, judging whether that frequency is a given frequency or less and whether or not a current is 0, and changing a voltage a...
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JP2574215Y2 |
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JPH10141857A |
To improve electric characteristics of a secondary conductor from a furnace transformer of a power supply device of a steel making ladle-refining apparatus to a refining furnace electrode. In this apparatus, all of a secondary conductor ...
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JP2758999B2 |
A vacuum arc vapor deposition device comprising an accumulation means for accumulating with time an electric power supplied to a vacuum arc evaporation source and an correcting means for correcting an arc current value so that an evapora...
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JPH10132230A |
To dispose incombustible article and combustible article without separating and to stably incinerate and melt it by providing an incinerating part and a molten material reservoir at a hearth of a melting furnace body, and providing a mol...
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JPH10134957A |
To make the electrode support beam and the electrod elevating mast for an electric arc furnace lighter in weight, and materialize capacity reduction of a drive motor, or enhancement on response concerning the elevating control of each el...
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JPH10132229A |
To stably incinerate to melt waste by disposing it without separating it into incombustible material and combustible material. This melting furnace 1 comprises a melting furnace body 2, a waste supply unit 4 provided at the body 2 to int...
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JP2749767B2 |
PURPOSE: To impregnate a graphite product uniformly with an oxidation preventive agent excellent in the beat resistance and stability by preparing a mixture from colloidal silica, boric acid anhydride, colloidal alumina, and phosphoric a...
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JP2748449B2 |
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JP2747654B2 |
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