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41. 发明授权

US4110546A DC arc furnace having a rotating arc 失效
标题翻译：直流电弧炉具有旋转电弧
公开(公告)号：US4110546A
公开(公告)日：1978-08-29
申请号：US739048
申请日：1976-11-05
申请人： Sven-Einar Stenkvist
发明人： Sven-Einar Stenkvist
IPC分类号： F27D11/08 , C21C5/52 , F27B3/08 , F27B3/28 , F27D11/00 , H05B7/02 , H05B7/18 , H05B7/20
CPC分类号： H05B7/02 , C21C5/5229 , F27D11/00 , Y02P10/216
摘要： A DC electric arc furnace with a furnace enclosure having a hearth containing a melt and with an arcing electrode forming an arc with the melt and made to angularly deflect and rotate by magnetic means forming a rotating magnetic field in the enclosure, is provided with means for sensing areas of the enclosure receiving a maximum intensity of arc radiation because of an asymmetrical charge in the furnace, this sensing means controlling the speed of rotation of the arc so that the arc rotates faster while directing its arc flare at these areas receiving maximum radiation.
摘要翻译：一种具有炉壳的直流电弧炉，其具有包含熔体的炉底，并且具有与熔融物形成电弧并且通过在外壳中形成旋转磁场的磁性装置成角度地偏转和旋转的电弧电极，感测区域由于炉内的不对称电荷而接收到最大强度的电弧辐射，该感测装置控制电弧的旋转速度，使得电弧转动更快，同时将弧光耀斑引导到接收最大辐射的这些区域。

42. 发明授权

US4097679A Side wall of the ultra high power electric arc furnaces for steelmaking 失效
标题翻译：用于炼钢的超大功率电弧炉侧壁
公开(公告)号：US4097679A
公开(公告)日：1978-06-27
申请号：US725289
申请日：1976-09-21
申请人： Ichiro Fukumoto , Susumu Hayashida
发明人： Ichiro Fukumoto , Susumu Hayashida
IPC分类号： H05B7/02 , F27B3/16 , F27B3/24 , F27D1/12 , F27D9/00
CPC分类号： F27D1/12 , F27D2009/004 , F27D2009/0051
摘要： A side wall for a UHP electric arc furnace includes water cooled panels positioned within the outer shell of the furnace. The panels form water channels and have multiple fins projecting inwardly from the panel into the furnace. The panels including the fins are formed of pure copper or copper alloy which has a high heat conductivity. The fins have a thickness of at least 10 mm and they project horizontally inwardly toward the furnace for at least 70 mm. The fins are spaced vertically apart in the range of 30-80 mm. The space between the fins is filled with a castable refractory.
摘要翻译：用于UHP电弧炉的侧壁包括位于炉外壳内的水冷板。这些面板形成水通道，并具有从面板向内突出到炉中的多个翅片。包括翅片的面板由具有高导热性的纯铜或铜合金形成。翅片具有至少10mm的厚度，并且它们向水平向内朝向炉子突出至少70mm。翅片在30-80毫米的范围内垂直间隔开。翅片之间的空间充满浇注耐火材料。

43. 发明授权

US3984617A Electric arc furnace 失效
标题翻译：电弧炉
公开(公告)号：US3984617A
公开(公告)日：1976-10-05
申请号：US614167
申请日：1975-09-17
申请人： Laszlo Fogaras
发明人： Laszlo Fogaras
IPC分类号： F27B3/08 , F27D11/08 , H05B7/02 , F27B3/06
CPC分类号： H05B7/02
摘要： An electric arc furnace has its side wall lining protected against arc-flare by an external magnet forming a magnetic flux field on the inside of the lining where arc-flare protection is required, and a supply of ferro-magnetic particles are fed downwardly through this flux field for the purpose of forming a layer of the particles held against the lining. The particles are continuously fed to replace particles which, because of heating, become non-magnetic and fall. In this case, the magnet is an electromagnet having an iron core and solenoid windings which produce a more uniformly and widely spread layer of the particles on the side-wall lining's inside.
摘要翻译：电弧炉的侧壁衬里通过外部磁体防止电弧闪光，在需要弧光保护的衬里内部形成磁通场，并将铁磁性颗粒供给到下方磁通场，用于形成保持在衬里上的颗粒层。颗粒连续进料以代替由于加热而变得非磁性并掉落的颗粒。在这种情况下，磁体是具有铁芯和螺线管绕组的电磁体，其在侧壁衬里的内部产生更均匀且广泛扩散的颗粒层。

44. 发明授权

US3883677A Electric arc furnace having side-wall lining protection 失效
标题翻译：电弧炉具有侧壁衬里保护
公开(公告)号：US3883677A
公开(公告)日：1975-05-13
申请号：US45835374
申请日：1974-04-05
申请人： ASEA AB
发明人： HANAS BERTIL , MARCHNER JAN
IPC分类号： F27D3/18 , H05B7/02 , F27D1/00
CPC分类号： H05B7/02 , F27D3/18
摘要： An electric arc furnace has a side wall lining with at least one portion bombarded by the arc flare from one of the furnace arcing electrodes. A magnet is positioned on the outside of this portion and ferro-magnetic particles are fed to its inside, the magnet forming a magnetic flux field traveling through this lining portion and on the latter''s inside magnetically holding the particles to form an arc flare shield protecting this portion''s inside from the arc flare. As the particles heat to their Curie point temperatures, they become non-magnetic and fall into the melt of the furnace, a supply of fresh and relatively cold particles being fed to the flux field as required to maintain the effectiveness of the arc flare shield formed by the particles. The wall thickness of this portion is reduced from its outside inwardly to form a recess in its outside and in which the magnet is positioned to reduce the distance the flux field must travel to the inside to hold the ferro-magnetic particles. Between the magnet and this thin wall portion a water cooled plate is positioned to cool the thin wall portion of the lining. In this way the travel path of the magnetic flux is reduced in length without risking possible overheating of the lining, permitting the use of a less powerful magnet construction, this being an electromagnet and requiring electric solenoids, a core or cores with pole pieces and a suitable mounting arrangement. A temperature measurement sensor is installed in the thin wall of the lining portion protected by the flare shield, and equipment is provided for controlling the feed rate of the ferro-magnetic particles which form the shield, automatically in response to the temperature measurements obtained from this sensor, this assuring maintenance of the effectiveness of the shield. The water-cooled plate may be made of non-magnetic metal to avoid interference with the flux travel through the plate.
摘要翻译：电弧炉具有侧壁，其中至少一部分由来自一个炉弧电极的电弧火炬轰击。磁体位于该部分的外侧，铁磁性颗粒被馈送到其内部，磁体形成穿过该内衬部分的磁通场，并在磁体上形成磁力保持颗粒以形成保护该磁体的弧形屏蔽部分内部的电弧火炬。当颗粒加热到居里点温度时，它们变得非磁性并且落入炉的熔体中，根据需要将新鲜和相对较冷的颗粒供给到磁通场，以保持形成的弧形光阑屏蔽的有效性由颗粒。该部分的壁厚从其外部向内减小以在其外部形成凹部，并且其中磁体被定位成减小磁通场必须行进到内部以保持铁磁性颗粒的距离。在磁体和该薄壁部分之间，定位水冷板以冷却衬里的薄壁部分。以这种方式，磁通量的行进路径的长度减小，而不会冒着可能的内衬过热风险，允许使用不太强大的磁体结构，这是一种电磁体，并且需要电磁螺线管，具有极片的芯或芯合适的安装方式。温度测量传感器安装在由火炬防护罩保护的衬里部分的薄壁中，并且提供设备以响应于从其获得的温度测量值自动地控制形成屏蔽的铁磁性颗粒的进料速率传感器，这样保证了屏蔽的有效性。水冷板可以由非磁性金属制成，以避免与通过板的助焊剂行进的干扰。

45. 发明授权

US3843106A Furnace 失效
标题翻译：炉
公开(公告)号：US3843106A
公开(公告)日：1974-10-22
申请号：US35185573
申请日：1973-04-17
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： NANJYO T , AOSHIKA M
IPC分类号： F27B3/12 , F27B3/24 , F27D1/12 , F27D9/00 , H05B7/02
CPC分类号： H05B7/02 , F27B3/12 , F27B3/24 , F27D1/12 , F27D2009/0021 , F27D2009/0045 , F27D2009/0062
摘要： A furnace wall is constructed with or includes coolers of the type comprising a main body made of cast iron or copper and a plurality of cooling tubes cast integral with the main body so that the furnace wall may be cooled by cooling water flowing through the cooling tubes. Water leakage problem may be overcome and the life of the furnace wall may be remarkably increased.

46. 发明授权

US3789127A Arc furnaces 失效
标题翻译： ARC FURNACES
公开(公告)号：US3789127A
公开(公告)日：1974-01-29
申请号：US3789127D
申请日：1973-01-05
申请人： BRITISH STEEL CORP
发明人： BOWMAN B
IPC分类号： H05B7/144 , F27B3/08 , F27D3/18 , F27D11/08 , H05B7/00 , H05B7/02 , H05B7/06 , H05B7/18 , F27D11/10
CPC分类号： H05B7/06 , F27D3/18 , H05B7/005 , H05B7/02
摘要： An electric arc furnace adapted to be powered by direct current includes a bottom electrode of one polarity (positive) mounted in the vessel for contact with the charge and three electrodes of negative polarity depending into the vessel from above. The arcs from the electrodes migrate inwardly which is the opposite of the case with a.c. thus reducing erosion of the furnace walls by concentrating the heat source in the centre. The bottom electrode design is such as to enable the furnace to be tapped whilst maintaining a reservoir of metal for the succeeding charge.
摘要翻译：适于由直流电源供电的电弧炉包括安装在容器中的一个极性（正极）的底部电极，与电荷接触，并且具有负极性的三个电极，这取决于从上方的容器。来自电极的电弧向内移动，其与具有直流的壳体相反。从而通过将热源集中在中心来减少炉壁的侵蚀。底部电极的设计是为了使炉子被轻敲，同时保持用于后续电荷的金属储存器。

47. 发明授权

US3567837A Electric furnace for arc melting 失效
标题翻译：电弧炉电炉
公开(公告)号：US3567837A
公开(公告)日：1971-03-02
申请号：US3567837D
申请日：1969-11-19
申请人： OHIO FERRO ALLOYS CORP
发明人： NOSTRAN JACK A VAN , JORDAN OTIS D
IPC分类号： H05B7/00 , H05B7/02 , H05B7/09 , H05B7/107 , H05B7/18
CPC分类号： H05B7/09 , H05B7/005 , H05B7/02 , H05B7/107
摘要： An electric furnace for arc melting having electrodes connected to a main source of electrical power. A transformer having high voltage windings and low voltage windings is provided. There is means for independently connecting the electrodes to the low voltage windings of said transformer, and means for connecting the high voltage windings of the transformer to power factor correctional devices. The transformer is a three phase transformer and there are a plurality of power factor correctional devices connected to the high voltage winding of each phase of the transformer. The power factor correctional devices are preferably capacitors. Circuit breakers are provided for connecting the capacitors to the high voltage windings and disconnecting them therefrom and for changing the amount of capacitance connected to the high voltage windings.

48. 发明授权

US3409726A Device for stirring molten metal in an electric furnace 失效
标题翻译：用于在电炉中搅拌熔融金属的装置
公开(公告)号：US3409726A
公开(公告)日：1968-11-05
申请号：US47068365
申请日：1965-07-09
申请人： TOHOKU SPECIAL STEEL WORKS LTD
发明人： JIRO MATSUMOTO , ARIMICIHI ABE
IPC分类号： H05B7/02 , B01F13/08 , C21C5/52 , F27B3/08 , F27D3/00 , F27D27/00 , H05B6/34
CPC分类号： C21C5/5247 , B01F13/0809 , B01F2215/0075 , C21C5/5229 , F27B3/085 , F27D27/00 , F27D2003/0039 , H05B6/34 , H05B2213/02 , Y02P10/253

49. 发明授权

US3396954A Gas-curtained electric smelting furnaces and method of collecting reaction gases thereof 失效
标题翻译：气帘式电熔炉及其反应气体的收集方法
公开(公告)号：US3396954A
公开(公告)日：1968-08-13
申请号：US53371666
申请日：1966-03-11
申请人： ELEKTROKEMISK AS
发明人： HARALD KROGSRUD
IPC分类号： F27D17/00 , H05B7/02
CPC分类号： H05B7/02 , F27D17/003

50. 发明授权

US3391239A Electrode centering mechanism for vacuum arc melting 失效
标题翻译：真空电弧熔化电极定心机构
公开(公告)号：US3391239A
公开(公告)日：1968-07-02
申请号：US54832866
申请日：1966-05-06
申请人： AIR FORCE USA
发明人： SHINGO INOUYE
IPC分类号： H05B7/02
CPC分类号： H05B7/02

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