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公开(公告)号：US3977462A
公开(公告)日：1976-08-31
申请号：US533155
申请日：1974-12-16
申请人： Isao Ohara
发明人： Isao Ohara
CPC分类号： F27D11/08 , B22D23/006
摘要： A molding arrangement to produce a die cast of a complicated shape by using an air-evacuated, air-tight work chamber. The chamber has a crucible and a mold, and an inert gas is used. An arc is generated and the electric resistance of the inert gas is broken between a pair of electrodes provided in the chamber by oscillating a high frequency current from a high frequency oscillator circuit connected outside the chamber. The metal material is melted in the crucible by the arc, while supplying the inert gas and using discharging gas generated from the metal. When the metal is melted the injection of inert gas into the chamber is stopped, so as to make the chamber a vacuum. The furnace, which includes the chamber, is rotated and the melt in the crucible is transferred into the mold. The melt is then forced to reach every corner in the mold by the pressure of the inert gas which is injected again into the chamber.
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公开(公告)号：US3940552A
公开(公告)日：1976-02-24
申请号：US541925
申请日：1975-01-17
申请人： Susumu Mizuno
发明人： Susumu Mizuno
摘要： A water-cooled panel as provided in an arc furnace so as to form a portion of the furnace wall has an outer surface exposed to the inside of the arc furnace. The exposed surface is provided with a plurality of fins.
摘要翻译： 设置在电弧炉中以形成炉壁的一部分的水冷面板具有暴露于电弧炉内部的外表面。 暴露的表面设置有多个翅片。
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公开(公告)号：US3895175A
公开(公告)日：1975-07-15
申请号：US51695274
申请日：1974-10-22
发明人： KROGSRUD HARALD
CPC分类号： F27B3/085 , F27B3/183 , F27D11/00 , F27D11/08 , F27D2003/0002 , F27D2003/0038 , F27D2003/0083 , F27D2003/0087
摘要： An apparatus for moving the charge in an electric smelting furnace is disclosed. The apparatus comprises an annular member disposed within the confines of the furnace pot, said annular member having means for moving the charge towards the center of the pot when the annular member is oscillated or rotated.
摘要翻译： 公开了一种用于在电冶炼炉中移动电荷的装置。 该装置包括设置在炉膛内的环形构件，所述环形构件具有用于当环形构件振荡或旋转时将电荷朝向罐的中心移动的装置。
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34.发明授权
公开(公告)号：US3835227A
公开(公告)日：1974-09-10
申请号：US29887972
申请日：1972-10-19
发明人： MEDOVAR B , LATASH J , PATON B , LEBEDEV V , VORONIN G , ARTEMIEV V , EDEMSKY V , VOLOKHONSKY L , NIKULIN A , SAFRONOVA L , KATSEVICH L , NIKOLSKY L , GORYNINA Z , KAGANOVSKY G , ALTGAUZEN A , SIDORENKO M , LEIBENZON S , BONDARENKO O , BAGLAI V
CPC分类号： C22B9/18 , F27D11/08 , H05B3/0023 , H05B3/60
摘要： In an electroslag remelting installation, a pair of consumable electrodes are immersed into a molten slag bath contained in a mold, which can be cooled by various arrangements of cooling liquid. AC electrical power is applied between the electrodes to cause current flow through the electrodes and through the molten slag bath and part of the molten metal pool, thereby heating and causing the electrodes to melt to form an ingot. As the electrodes melt, they are simultaneously fed together into the slag bath. A conductor, connected between the bottom plate of the mold which can include a weld lug and either a center tap on the secondary winding of the transformer supplying AC power to the electrodes or to a center tap on a choke coil connected in parallel with the secondary winding, provides an equalizing circuit which automatically adjusts the melting of the electrodes to keep them at equal immersion depths in the slag bath. Flexible electrical lines and connectors are grouped in close arrangement and in parallel paths where possible to avoid inductance losses.
摘要翻译： 在电渣重熔装置中，将一对可消耗电极浸入容纳在模具中的熔渣中，其可以通过冷却液的各种布置来冷却。 在电极之间施加交流电力，引起电流流过电极，并通过熔渣槽和熔融金属池的一部分，由此加热并使电极熔化以形成锭。 当电极熔化时，它们同时一起进入炉渣槽。 连接在模具的底板之间的导体，其可以包括焊接凸耳和向电极提供AC电力的变压器的次级绕组上的中心抽头或与二次并联连接的扼流线圈上的中心抽头 提供均衡电路，其自动调节电极的熔化，以将它们保持在渣槽中相等的浸入深度。 灵活的电线和连接器以可能的方式紧密配置和并联组合，以避免电感损耗。
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公开(公告)号：US3823243A
公开(公告)日：1974-07-09
申请号：US41056773
申请日：1973-10-29
申请人： PHOENIX STEEL CORP
摘要： In electric furnace systems, the electrode for supplying current to the furnace is normally moved up and down by a reciprocating mast mounted by upper and lower mast-guiding means fitting closely about the mast, the reciprocating motion being provided by suitable motor means. To prevent dangerous up-and-down extremes of travel of the mast, there is employed a normally-open type of switch means positioned between the upper and lower mastguiding means so as to be held closed by a surface of the mast during execution by the mast of its desired maximum length of travel. The mast surface is configured to permit the switch means to open when the mast moves beyond the desired maximum length of travel, and this opening of the switch is caused to deactuate the motor means. Preferably the configuring of the mast surface comprises providing a recess therein so positioned that when the switch arm, which normally rides along the exterior of the mast, reaches the recess, it moves into the recess to permit the switch to open and discontinue the motor operation. The position of the switch is preferably on the side of the mast away from the furnace means and within an at-least-partially protected region. Other arrangements employ more than one recess and/or switch, some of which may be used for normal arrest of the extreme motion of the mast and others of which may be used as back-up safety devices in case the normal mast-arresting arrangement does not function.
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公开(公告)号：US3821455A
公开(公告)日：1974-06-28
申请号：US35528573
申请日：1973-04-27
申请人： GREENEWALD H
发明人： GREENEWALD H
摘要： An indirect arc metal melting furnace employing an ionizable interior atmosphere is provided with a sealed and insulated double shell construction which is effective to minimize moisture outgassing from an internal crucible lining and thereby improves the electrical operating characteristics of the furnace.
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公开(公告)号：US3806622A
公开(公告)日：1974-04-23
申请号：US30871172
申请日：1972-11-22
申请人： ASEA AB
发明人： MARCHNER J
摘要： An arc furnace installation has furnace electrodes supported by electrode arms, the electrodes being vertically movably passed through a raisable and lowerable furnace cover on a laterally movable furnace vessel and their arms being vertically slidably applied to vertical pillars extending upwardly and the pillars having lower ends supported by supporting means positioned above and laterally free from the furnace vessel and its cover, leaving the space laterally aound the furnace vessel and its cover free from bulky equipment. This space is enclosed by side walls and movable screens providing insulation against furnace operating noise but by moving the screens permitting lateral movement of the furnace.
摘要翻译： 电弧炉安装具有由电极臂支撑的炉电极，电极可垂直移动地穿过可横向移动的炉容器上的可升高和可下降的炉盖，并且其臂可垂直滑动地施加到向上延伸的垂直柱，并且具有支撑的下端的柱 通过位于炉膛上方和侧面的支撑装置及其盖，使得空间横向放置在炉容器及其盖子上而不含笨重的设备。 这个空间被侧壁和活动屏幕所包围，提供了隔离炉操作噪音的绝缘，但通过移动屏幕允许炉的横向运动。
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公开(公告)号：US3793468A
公开(公告)日：1974-02-19
申请号：US3793468D
申请日：1972-09-22
发明人： AKERS R
CPC分类号： F27D11/08 , H05B6/34 , H05B7/12 , H05B2213/02
摘要： In a furnace having an electric arc extending between an electrode and material to be melted which is composed at least partially of conductive material, a resultant magnetic field having a desired field configuration is produced by mutual interaction of two or more separately and independently generated magnetic fields and the resultant magnetic field is utilized to improve furnace operation in a number of ways. In some embodiments, two fields are generated, one by a field coil in the tip of the electrode and one by a coil at or near the wall of the furnace, which latter coil may be a solenoid having a length to diameter ratio equal to or greater than one or a concentrated coil having a length to diameter ratio substantially less than one, and the resultant field has a configuration which may increase or improve arc-moving forces on the arc provided to reduce erosion of material from the electrode by arc action thereon, or may improve focusing of the arc between electrode and melt, or may improve control of a diffused arc, or may improve stirring of the melt, or may control the portion of the surface of the melt to which the arc strikes, or may prevent arc flares to the wall of the furnace, or may prevent glow discharges, or may increase feed rate, or may improve grain structure in an ingot produced, or may include any combination of the aforementioned and other improvements. In another embodiment, three magnetic fields are separately generated, one by an electric tip field coil, one by a solenoid and one by a concentrated coil adjacent the solenoid and having an axially adjustable position thereon. In a further embodiment, two magnetic fields are separately generated by two field generating means external to the electrode and under some conditions no interacting magnetic field is generated within the electrode. In other embodiments, two electrodes are mounted in the furnace each with an arc extending therefrom to the melt, and three electrodes are mounted in the furnace each with an arc extending therefrom to the melt. New and improved processes and methods of furnace operation are also described.
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39.发明授权Process for iron ore reduction and electric furnace for iron ore reduction having at least one nonconsumable electrode 失效用于减少电磁铁的工艺和电火花以减少至少一个不可接触的电极
公开(公告)号：US3736358A
公开(公告)日：1973-05-29
申请号：US3736358D
申请日：1971-07-30
摘要： Furnace apparatus for iron ore reduction comprises a furnace having a wall composed of refractory material and non-consumable electrode apparatus having at least one axially extending passageway therethrough mounted in the furnace, and means for energizing the electrode apparatus and producing an arc which melts the ore and liquifies the same.
摘要翻译： 用于铁矿石还原的炉装置包括具有由耐火材料构成的壁和不可消耗电极装置的炉，其具有安装在炉中的至少一个轴向延伸的通道，以及用于激励电极装置并产生熔化矿石的电弧的装置 并液化。
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40.发明授权Electric furnace,particularly of the type using a dry crucible to melt highly reactive metals,and method 失效电火花，特别是使用干硬质地熔融高反应性金属和方法
公开(公告)号：US3728100A
公开(公告)日：1973-04-17
申请号：US3728100D
申请日：1969-09-03
申请人： CONSARC CORP
发明人： WOODING P
摘要： IN THE PREFERRED EMBODIMENT THE NUMBER OF MELTS PER UNIT TIME IS INCREASED FOR AN ALECTRIC FURNACE WHICH USES A CRUCIBLE TO ABSORB THE EXCESS HEAT LOAD BY PROVIDING: (1) MEANS TO RAPIDLY COOL THE CRUCIBLE AFTER THE POWER HAS BEEN REMOVED, OR (2) SMALL, ISOLATED QUANTITIES OF WATER WHICH REDUCE THE EXPLOSION HAZARD. THE COOLING MEANS TAKES THE FORM OF PASSAGES WHICH EXTEND THROUGH THE CRUCIBLE AND ARE CONNECTED TO A SOURCE OF WATER. WATER IS PERMITTED TO ENTER TE PASSAGES ONLY AFTER THE POWER HAS BEEN REMOVED OR IN SMALL QUANTITIES ONLY. WHEN USING THE DRY SKULL TECHNIQUE, THE CRUCIBLE WILL HAVE BEEN SUBSTANTIALLY EMPTIED OF MOLTEN METAL. MEANS ARE PROVIDED TO PASS INERT GAS TROUGH THE PASSAGES TO CLEAR RESIDUAL WATER.
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