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    METHOD AND APPARATUS FOR MONITORING AN ELECTRIC ARC FURNACE
    5.
    发明公开
    METHOD AND APPARATUS FOR MONITORING AN ELECTRIC ARC FURNACE 审中-公开
    方法和仪器监测电弧炉

    公开(公告)号：EP2893771A1

    公开(公告)日：2015-07-15

    申请号：EP13834694.5

    申请日：2013-09-03

    申请人： Luxmet Oy

    发明人： AULA, Matti ,  ROININEN, Juha ,  LEPPÄNEN, Ahti

    IPC分类号： H05B7/20 ,  F27D11/08

    摘要： An apparatus (100) comprises at least one optical cable (104), a detector (106) and a processing unit (108). An end of an optical cable (104) is placed inside the electric arc furnace (10) for collecting light from the furnace (10). The optical cable (104) conveys the light to the detector (106). The detector (106) separates the light into a plurality of optical bands of the spectrum and transforms strengths of the plurality of optical bands into electrical data. The processing unit (108) measures, for determining a state of the furnace (10), a background of the optical bands in a predetermined manner, at least one characteristic strength level of the optical bands and an average deviation of the strengths of the optical bands from the background on the basis of the electrical data.

    COMPACT COIL ASSEMBLY FOR A VACUUM ARC REMELTING SYSTEM
    6.
    发明公开
    COMPACT COIL ASSEMBLY FOR A VACUUM ARC REMELTING SYSTEM 审中-公开

    公开(公告)号：EP4290982A2

    公开(公告)日：2023-12-13

    申请号：EP23192685.8

    申请日：2018-10-17

    申请人： Titanium Metals Corporation

    发明人： PATEL, Ashish D. ,  SENSENIG, Jeremy L. ,  MCFARLAND, Robert James, Jr. ,  PHILLIPS, James Leroy

    IPC分类号： H05B7/20

    摘要： A vacuum arc remelting system for forming an ingot from an electrode is provided that includes a crucible assembly configured to accommodate the electrode and the ingot, an electromagnetic energy source arranged about the crucible assembly, and a lift mechanism operable to move the electromagnetic energy source along a longitudinal axis of the crucible assembly. A magnetic field generated by the electromagnetic energy source is localized to an arc region during remelting, and in one form, the electromagnetic energy source is a coil assembly having a magnetic core and a plurality of coil pairs wrapped around the core, wherein the coil assembly is operable to generate a magnetic field from the coil based on electric current flowing in the plurality of coil pairs.

    SYSTEMS AND METHODS FOR CONTROLLING A VACUUM ARC REMELTING FURNACE BASED ON POWER INPUT
    10.
    发明公开
    SYSTEMS AND METHODS FOR CONTROLLING A VACUUM ARC REMELTING FURNACE BASED ON POWER INPUT 审中-公开
    用于基于电力输入控制真空炉重熔炉的系统和方法

    公开(公告)号：EP3315889A1

    公开(公告)日：2018-05-02

    申请号：EP17167648.9

    申请日：2017-04-21

    申请人： A. Finkl & Sons Co.

    发明人： UNDERYS, Algirdas

    IPC分类号： F27D7/06 ,  F27D9/00 ,  F27D11/10 ,  C22B9/00 ,  C22B9/04 ,  C22B9/16 ,  C22B9/20 ,  H05B7/07 ,  H05B7/109 ,  H05B7/156 ,  H05B7/20 ,  F27B3/08 ,  F27D19/00

    摘要： A control system for a vacuum arc remelting (VAR) process for a metal includes a direct current (DC) power source, a ram drive, voltage drip short sensor, and a controller, which includes a processor. The drip short sensor may be configured to measure a drip short frequency of the electric arc over a period of time. The controller is configured to determine a real time arc gap length between the electrode tip and the melt pool based on a correlation between the drip short frequency and arc gap length. The controller is further configured to control power input to the electrode by the DC power supply by determining an input power level to input to the electrode based on the real time arc gap length, the input power level configured to generate a desired arc gap length, by the DC power supply, at the input power level.

    摘要翻译： 用于金属的真空电弧重熔（VAR）过程的控制系统包括直流（DC）电源，冲压驱动器，电压滴注短传感器和包括处理器的控制器。 滴漏短传感器可以被配置成在一段时间内测量电弧的滴落短频。 控制器被配置成基于滴水短频和弧隙长度之间的相关性来确定电极尖端和熔池之间的实时弧隙长度。 所述控制器还被配置为通过基于所述实时弧隙长度确定输入到所述电极的输入功率水平来控制由所述DC电源输入到所述电极的功率，所述输入功率水平被配置为产生期望的弧隙长度， 由DC电源以输入功率电平。