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公开(公告)号：EP1253986A1
公开(公告)日：2002-11-06
申请号：EP00936838.2
申请日：2000-05-31
CPC分类号： B22D11/008 , B22D11/04 , B22D23/10 , B22D27/02
摘要： The invention relates to a method for producing essentially segregation-free and especially freckle-free casting moulds from metal, especially high-alloy steels as well as Ni and Co base alloys having great dimensions, according to an electroslag melting or casting method and using a short, electrically conductive, water-cooled chill mould (10). Electrically conductive elements (16) which are not directly water-cooled are mounted in the wall of said chill mould in an electrically insulated manner in relation to the component of the chill mould (10), whereby said component forms the casting mould. An essentially segregation-free and freckle-free bloom (24) of a surface cross-section that amounts to not more than 90 % of said component of the chill mould (10) is arranged in said chill mould, whereby said component forms the casting mould. The bloom is connected to the supplied metal by means of a slag bath (31) which is heated by the current passage and is situated in the area of the electrically conductive elements (16) and by continually pouring liquid metal (34) in a dosing manner or by supplying solid metal, in the form of granulated metal or rods for instance, that melts open in the hot slag bath (31). The level of the slag (32) in the chill mould (10) is approximately held constant by means of a relative movement between the chill mould (10) and the bloom (24) until the bloom (24) is radially doubled in the desired length. This process involving the doubled bloom (24) and a chill mould (10) of greater dimension is repeated once or several times until the desired final dimension of the casting mould is obtained.
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2.发明公开VERFAHREN UND VORRICHTUNG ZUR KONTINUIERLICHEN HERSTELLUNG VON GEGOSSENEN ODER UMGESCHMOLZENEN STRÄNGEN NACH EINEM ELEKTROSCHLACKE-VERFAHREN 有权方法和设备用于为电渣过程CAST或副主席提炼STRINGS连续生产
公开(公告)号：EP1187943A1
公开(公告)日：2002-03-20
申请号：EP00929525.4
申请日：2000-05-12
CPC分类号： B22D23/10
摘要： The invention relates to a method and to a device required for carrying out said method for the continuous production of electroslag-casted or remelted billets or ingots from metal, especially from steels and Ni and Co base alloys in a water-cooled ingot mold (10) that is open towards the bottom. The billet (20) that is issued from the bottom of the ingot mold (10) is forced against a guide element (24, 24a) that is stationary with respect to its position to the ingot mold axis (A) by at least one clamping element (26) that is located opposite said guide element in such a manner that the areas of the billet surface that contact the guide or clamping elements (24, 26) change within short time intervals. At least one of those elements is driven to draw the billet while the other elements follow the movement of the billet. The method is also characterized in that at least one of the elements mentioned can be used to establish a contact with a source of current.
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3.发明公开
公开(公告)号：EP1334214A1
公开(公告)日：2003-08-13
申请号：EP01996632.4
申请日：2001-11-09
摘要： The invention relates to a method for producing metallic ingots or strands, especially from steel and Ni and Co based alloys, by melting self-consuming electrodes in an electroconductive slag bath, using an alternating current or a direct current in a short water-cooled mould which opens downwards, via which an electric contact can be produced for the slag bath. The supplied melt current is passed via the consumable electrode, the bottom plate, the remelt ingot and the melting bath, and optionally at least one electroconductive element of the mould, to the slag bath. The current distribution can be regulated in a controlled manner and the return circuit of the melt current passes back via at least one other electroconductive element of the mould, which is electrically isolated in relation to a first part of the mould which forms the remelt ingot. The proportion of the entire melt current supplied via the bottom plate is selected between 0 and 100 %. The device for carrying out said method uses a short, water-cooled mould having a bottom plate for creating a remelt ingot, and having at least one electroconductive element which is provided in the region of the slag bath. Said element is isolated in relation to the lower region of the mould, which forms the remelt ingot, and/or in relation to other electroconductive elements.
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4.发明公开VERFAHREN ZUM HERSTELLEN VON BLÖCKEN ODER STRÄNGEN AUS METALL DURCH ABSCHMELZEN VON ELEKTRODEN SOWIE VORRICHTUNG ZU DESSEN DURCHFÜHRUNG 有权铅及装置及其实施融化PRODUCING块和STRINGS金属方法
公开(公告)号：EP1339885A2
公开(公告)日：2003-09-03
申请号：EP01993711.9
申请日：2001-11-09
摘要： The invention relates to a method for producing metal blocks or bars, especially from steels and Ni- and Co-based alloys, by melting off consumable electrodes in an electroconductive slag bath using alternating or direct current in a short, downwardly opening, water-cooled mould through which a current contact can be established with the slag bath. The melting current is introduced into the slag bath through the consumable electrode and through the mould in a controlled manner in terms of regulating the distribution of the current between the electrode and the mould; and is conducted back through the mould and the block and the base plate as desired; the division of the currents being adjustable in a controlled manner.
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5.发明公开
公开(公告)号：EP1257675A1
公开(公告)日：2002-11-20
申请号：EP00942005.0
申请日：2000-05-31
CPC分类号： C22B9/18 , B22D11/006 , B22D23/10
摘要： The invention relates to a method for producing hollow moulded bodies (48) from metal - especially from steels and Ni and Co base alloys according to an electroslag melting or casting method - using a short, electroconductive, water-cooled chill mould (10) that, together with a mandrel (14) which is arranged within the opening (11) of the chill mould and is also water-cooled, forms a casting or annual gap (18) for the hollow moulded body (48). The metal level is covered by means of an electroconductive slag bath (44) which is heated by supplying direct current or alternating current to the slag bath (18) by means of not directly water-cooled, electroconductive elements (24, 26) which are inserted into the wall of the chill mould (10) and/or the water-cooled mandrel (14) and by subsequently removing said current by means of such elements of the respective other component and/or the formed moulded body (48). At least one of said electroconductive elements (24, 26) is electrically insulated from the remaining components of the water-cooled chill mould (10) or the mandrel (14). The hollow moulded body (48) that is produced in the annular gap (18) and between the chill mould (10) and the mandrel (14) is drawn off towards the bottom or the chill mould (10), together with the mandrel (14), is lifted at the climbing speed of the metal level, whereby the moulded body (48) is stationary.
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