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JP3819298B2 |
Methods and apparatus for treating waste are provided. Waste is converted in an arc plasma-joule heated melter system (21) utilizing one or more arc plasma electrodes (27) and a plurality of joule heating electrodes (24). The arc plasma ...
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JP2006220380A |
To provide a molten steel level detection method and a molten steel level detection device for an arc furnace, melting and heating, or refining molten metal such as scrap iron.In this molten steel level detection method for the arc furna...
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JP3800936B2 |
To enable a metallic sheet to be machined and be easily and finely bent by properly performing electrical discharge using a simple method and apparatus. The metallic sheet 2 is machined by generating desired thermal strain in parts to be...
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JP2006179425A |
To prevent an electrode from colliding with a non-conductor and causing a breaking accident since the non-conductor is detected in an early stage, in an arc furnace in which the electrode is automatically lifted up and down by constant i...
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JP2006179248A |
To achieve a discharge heating device, preventing a reduction in discharge performance caused by molten substance of an object of combustion and a partial abnormal heating, etc., which occurs in a structure having two electrodes for elec...
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JP2006100078A |
To provide a plasma torch which does not generate an outgas even in a super-high vacuum environment, and which is commonly usable as a migrating type and a nonmigrating type.This plasma torch has a conductive anode 10 of a nearly cylindr...
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JP2006097917A |
To provide a control method of a plasma type melting furnace capable of reducing wear of an electrode and suppressing fluctuation of melting capacity.This control method of the plasma type melting furnace 1 provided with a plurality of p...
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JP2006085936A |
To provide an electrode elevation control device capable of preventing breakage or abnormal consumption of the electrode in a simple structure.The electrode elevation control device for a steel-making alternating-current arc furnace cont...
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JP2006040619A |
To solve a problem where an arc is not generated between a main electrode and a furnace bottom electrode of a plasma ash melting furnace and a side arc is generated between the main electrode and a furnace wall outer shell conductive par...
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JP3738506B2 |
To prevent an electrode from being buried in a metal scrap and broken and prevent lowering steel yield efficiency due to breaking accident and increasing running cost. Electrode elevation devices L1, L2, L3 are controlled by a rapid pull...
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JP2006019259A |
To provide a method and an apparatus for treating waste.Waste is converted in a plasma-joule heated melter system (21) utilizing one or more arc plasma electrodes (27) and a plurality of joule heating electrodes (24). The arc plasma elec...
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JP3732432B2 |
To provide a structure of a graphite electrode connection part for an electric steel furnace capable of improving effective strength of the bottom part of a socket screw of the electrode connection part to the extent equivalent to that o...
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JP3721230B2 |
To provide an electrode extension device which can attain improvement of work efficiency from taking out a new electrode from a storage site to connecting to a present use electrode. A new electrode 9 horizontally placed in an electrode ...
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JP3717103B2 |
To provide a plasma arc heating device for molten metals inside a tundish which can prevent power feeding circuits from burning out. In the heating device for molten metals inside the tundish which heats molten metals 2 by a plasma arc g...
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JP2005293945A |
To provide a plasma heating device, capable of simply controlling the area and depth to which plasma heating treatment can be applied.The plasma heating device 1A comprises a plurality of electrodes with nozzle 10A, 10B arranged in a dir...
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JP2005291590A |
To provide ultra-high temperature flame, a ultra-high temperature combustion furnace, a refuse incinerator, and a separator.In this ultra-high temperature flame generating method, plasma discharge is performed while supplying oxygen and ...
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JP3699123B2 |
A submerged arc furnace produces foundry iron from scrap iron and steel sources where little or no slag is produced. Scrap iron or steel is fed into the submerged arc furnace with a source of silica and a carbonaceous reducing agent. The...
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JP3684254B2 |
To automatically set a new electrode placed horizontally into a vertical condition, by providing a tiltably rolling mechanism for tiltably rolling the horizontal new electrode to vertically retain it, and a transfer mechanism for transfe...
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JP3682192B2 |
To extend a service life by delaying the eroding rate at the tip end part in an anode for shifting type plasma-heating. In a shifting type plasma torch, with which DC current is supplied into molten metal in a vessel and the molten metal...
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JP3679919B2 |
To automate replenish work of an electrode by positioning a new electrode with respect to an existing electrode by making fine adjustment of the position in a horizontal plane of an electrode connector according to a detecting result of ...
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JP3678379B2 |
To reduce the total weight of the electrode supporter by improving the cooling mechanism of the electrode support beam in the electrode supporter of an electric arc furnace. A number of small coolers 20a to 20c for separately generating ...
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JP3672220B2 |
To relax stress in the screwed part between a socket and a nipple, and absorb thermal expansion difference to prevent the longitudinal and lateral breakage of an electrode by forming a groove on the circular end surface of the nipple fac...
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JP3669662B2 |
To provide an electric furnace graphite electrode connection structure for preventing cracks in the core of a socket so as to simplify core machining by forming the core of the thread part of the socket engaged with the screw thread of t...
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JP2005172340A |
To prevent the erosion of an electrode liner in accompany with the spark caused by flue dust attached and accumulated between an electrode of an electric-arc furnace and the electrode liner.Thermometers 9, 10 are mounted on water cooling...
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JP2005172286A |
To provide an ash melting furnace electrode protecting member which can maintain stable insulating property for a long period.In an electrode protecting member 15 provided in an electrode penetrating part of a melting furnace, a glaze la...
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JP2005163188A |
To provide fine and ultrafine metal powders with controlled physical properties.The fine and ultrafine copper or nickel powders have a span being one of the measures specifying the particle size distribution below a specific value and al...
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JP2005155945A |
To provide a melting furnace, and a restarting method for the melting furnace capable of quickly carrying out restarting by a simple structure without requiring manual work of an operator in the furnace.The restarting method is for the m...
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JP2005516752A |
A method of heating in a vacuum atmosphere in the presence of a plasma, comprises the following steps: a) providing infrared radiation means ( 16 ) in a vacuum chamber ( 10 ); b) providing a first electrical conductor ( 18 ) to the infra...
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JP2005140325A |
To provide a threaded connection improved in preventing looseness for a carbon electrode column and/or a graphite electrode column.The threaded connection comprises an outer member made from ceramic and having an internal thread; an inne...
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JP3652715B2 |
PURPOSE: To prevent the occurrence of electric erosion, even when metallic materials substantially different in ionization tendency are used, by keeping the cooling water passage of an electrode support arm and the cooling water passage ...
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JP3645306B2 |
PURPOSE: To determine the optimum target total quantity of electricity supply to be supplied to an electric furnace neither too much nor too less and prevent occurrence of abnormal consumption of refractories by employing a specified way...
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JP3643773B2 |
To provide a plasma arc type melting furnace capable of melting efficiently and reducing damage of a fire-resisting wall due to melting. Three main electrodes 3 for plasma electrodes and one furnace bottom electrode 4 are arranged inside...
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JP3644012B2 |
To provide a connecting device for electrode which can automatically connect a main electrode to an in-furnace electrode without giving damages to the thread of the electrode through safe operation. A connector 2 is carried to a furnace ...
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JP2005085711A |
To provide an automatic electric power control device of an arc furnace in which a desired furnace injection electric power can be maintained always even if a power supply voltage fluctuates greatly.This device is provided with an instru...
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JP3627491B2 |
To restrain the voltage FLUCTUATION for a power system by operating the facility with a new input power after operating it for a predetermined time with an input power that causes a voltage fluctuation permissible by the power system whe...
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JP3622283B2 |
To provide an electrode connecting device for screwing the new electrode, which can always securely connect a new electrode at the time of the consumption of a former electrode due to the operation in an electric fusing furnace such as a...
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JP2005036997A |
To provide an electrode lift control device of an arc furnace capable of identifying the phase in a short-circuit mode close to a scrap, lifting only an electrode of the phase, and preventing arc cutting with a simple configuration.In an...
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JP3618630B2 |
To provide a multi-head energization sintering system which can operate a plurality of sintering machines by one power source. This multi-head pulse pulse energization sintering system 1 comprises the power source 3, a plurality of pulse...
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JP3617579B2 |
To eliminate the problems that since carbon is used as a movable electrode dipped in melted ash, the movable electrode is broken halfway owing to oxidization wear in a furnace, and hence melting efficiency, power source unit, and electro...
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JP3610690B2 |
To provide an electrode ascent and descent control device for an alternating current electric arc furnace which can be operated under not more than the rated capacity of a furnace transformer and a method therefor by controlling an elect...
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JP3611314B2 |
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JP2004351471A |
To provide a method for preventing crevice corrosion by a pulse discharging method and to provide a forming device of anti-corrosive coating film.In this method, by generating pulse discharge between a structural member (20) and an elect...
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JP3596691B2 |
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JP3596690B2 |
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JP3595475B2 |
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JP2004322135A |
To provide a micro-thermoforming method capable of performing microforming below microorder and an electrode used for the same.In the micro-thermoforming of subjecting a member to be thermally formed to microforming by using the member t...
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JP3589084B2 |
To eliminate dangerous on-furnace work of an operator and allow accurate measurement. This device is constituted with arm-shaped electrode holders 6 for clamping electrodes 4 and holding them vertically, an electrode holder support colum...
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JP3588839B2 |
PURPOSE: To prevent a plug from being tightly screwed to the screw hole of an electrode and facilitate its removal in an electrode replenishing device for replenishing a new electrode by screwing it onto the upper end of the electrode of...
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JP3585344B2 |
To perform an accurate sensing of an amount of base metal. A plasma torch 15A is lowered, immersed into a base metal 4, its lower end is abutted against a bottom part 3a of a furnace, a height of the plasma torch 15A at this time is dete...
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JP2004285553A |
To provide highly heat resistant linking parts for electrode capable of withstanding to a graphitization process at ≥3000°C and method for producing the same by including carbon fibers activated by oxidation into the linking parts com...
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