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公开(公告)号：US3929457A
公开(公告)日：1975-12-30
申请号：US41640073
申请日：1973-11-16
Applicant: ASEA AB
Inventor： STENKVIST SVEN EINAR
CPC classification number: F27D11/08 , C22B4/00 , F27D3/18 , Y02P10/214
Abstract: For direct current electric arc furnace melting of metal scrap a furnace includes a vessel having a bottom wall shaped so that a portion of the melt is collected in the latter after initial melting or introducing of molten metal to start the operation. This vessel has means for feeding scrap in pieces to the peripheral portion of the bottom wall to form at that location an annular pile, or one or more separate piles, of unmelted scrap contacting and electrically connecting with the melt but extending upwardly to a level above the melts level. An electrode is positioned vertically with an arcing and maintained above the level of the melt to form an arc therebetween, this electrode being spaced from the pile or piles of scrap when the operation has started. The melt is made an anode by maintaining a positive electrical connection from a DC power source with the pile or piles of scrap at a position above the level of the melt so that the current passes through the unmelted scrap, with consequent heating of the scrap while magnetically tending to keep it piled, and through the melt and via an arc to the arcing electrode, the latter being negatively connected with the power source. The arcing electrode is made of carbon and in the described way enjoys the advantages of operating as a cathode without requiring an arcing anode electrode or an electrically conductive vessel bottom. More than one negatively connected arcing electrode may be used.
Abstract translation: 对于金属废料的直流电弧炉熔化，炉子包括具有底壁形状的容器，使得在初始熔化或引入熔融金属以开始操作之后，将熔体的一部分收集在容器中。 该容器具有用于将碎片送入底壁的周边部分的装置，以在该位置处形成环形桩或一个或多个分开的未熔化废料桩，与未熔化的废料接触并与熔体电连接但向上延伸至上方 融化水平。 电极垂直放置并且保持在熔融物的高度以上，以在其间形成弧形，当操作开始时，该电极与桩或桩的碎片间隔开。 将熔体制成阳极，通过保持与直流电源的正电连接，其中桩或堆桩在高于熔体水平的位置处，使得电流通过未熔化的废料，从而导致废料的加热，同时 磁力倾向于保持其堆积，并且通过熔体和通过电弧到电弧电极，后者与电源负相关。 电弧电极由碳制成，并且以所述方式具有作为阴极操作的优点，而不需要电弧阳极电极或导电容器底部。 可以使用多于一个负连接的电弧电极。
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572.发明授权
公开(公告)号：US3929010A
公开(公告)日：1975-12-30
申请号：US51130274
申请日：1974-09-30
Applicant: ASEA AB
Inventor： TJERNSTROM OVE
CPC classification number: H01F27/303 , G01L5/00
Abstract: For measuring the clamping force prevailing in the windings of a transformer which has windings mechanically clamped between clacks arranged in two clack rings which support the windings at their ends, clacks are provided forming columns of clacks in the windings over which the clamping force is to be measured. One of the clacks arranged in the clack rings is in contact with one of the outer clacks of each of the columns. One of the clacks in the clack ring is provided with a channel which opens into the area of contact between it and the column clack and to the outside. Liquid under pressure is supplied to this passage, and, when there is balance between the added pressure medium and the pressure medium leaking out in the area, the pressure is determined and a clamping force is derived from the measured pressure with the help of a calibration curve.
Abstract translation: 为了测量在变压器的绕组中存在的夹紧力，该变压器的绕组被机械地夹在布置在两个支撑绕组端部的两个环形环之间的间隙之间，在绕组中形成有夹紧柱的夹紧力 测量。 布置在环形环中的一个环与每个柱的外部一个孔接触。 拾音环中的一个琴条设置有通道，该通道通向其与柱扣之间的接触区域和外部。 在该通道中供应压力的液体，并且当添加的压力介质和在该区域中泄漏的压力介质之间存在平衡时，确定压力并借助于校准从压力测量得到夹紧力 曲线。
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公开(公告)号：US3928794A
公开(公告)日：1975-12-23
申请号：US51814874
申请日：1974-10-25
Applicant: ASEA AB
Inventor： BROMS ANDERS , FRANK KJELL
CPC classification number: H02M7/5155
Abstract: In an inverter with a plurality of connection groups, each of which includes positive and negative points of connection for connection to a feeding direct current voltage source and an alternating current terminal, controllable main rectifiers are connected between the positive point of connection and the alternating current terminal and between the alternating current terminal and the negative point of connection, with a commutating capacitor having one terminal connected to the alternating current terminal. There are a second positive and a second negative point of connection connected to a commutating direct voltage source, with controllable commutating rectifiers connected between the second positive point of connection and the second terminal of the commutating capacitor and between the second terminal of the capacitor and the second negative point of connection. Two pairs of windings are provided which are magnetically coupled to each other. One pair of windings has a winding connected between the first rectifier and the alternating current terminal and the second winding in series with the first commutating rectifier. The second pair of windings has one winding connected between the alternating current terminal and the second main rectifier and the second in series with the second commutating rectifier. A feedback valve has its anode connected to a point between the second main rectifier and the first winding of the second pair and its cathode connected to the first positive point of connection; and a second feedback valve has its anode connected to the first negative point of connection and its cathode to a point between the first main rectifier and the first winding of the first pair of windings.
Abstract translation: 在具有多个连接组的逆变器中，每个连接组包括用于连接到馈电直流电压源和交流端子的正和负连接点，可控主整流器连接在正极连接点和交流电 端子之间以及交流端子和负极连接点之间，具有一个端子连接到交流端子的整流电容器。 连接到换向直流电压源的第二正极和第二负极连接点，连接在第二正极连接点和换向电容器的第二端子之间以及电容器的第二端子之间的可控整流整流器 第二个负点连接。 提供了两对彼此磁耦合的绕组。 一对绕组具有连接在第一整流器和交流端子之间的绕组，而第二绕组与第一整流整流器串联连接。 第二对绕组具有连接在交流端子和第二主整流器之间的一个绕组，而第二绕组与第二整流器串联。 反馈阀的阳极连接到第二主整流器和第二对的第一绕组之间的点，其阴极连接到第一正连接点; 并且第二反馈阀的阳极连接到第一负连接点及其阴极连接到第一主整流器和第一对绕组的第一绕组之间的点。
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公开(公告)号：US3927891A
公开(公告)日：1975-12-23
申请号：US46240274
申请日：1974-04-19
Applicant: ASEA AB
Inventor： LARKER HANS , NILSSON JAN
CPC classification number: F16J15/56
Abstract: In a high pressure press which has a seal holder, a high pressure seal is provided between the wall of a high pressure cylinder and a die or an axially movable plunger projecting into the cylinder, which is composed of two sealing rings, one of which has an outer surface abutting the cylindrical wall and an end surface abutting the seal holder, while the other ring has a cylindrical surface abutting the plunger and a surface abutting the seal holder. The portion of the outer surface of the first ring abutting the cylindrical wall which is nearest to the seal holder is provided with generally longitudinally extending draining channels therein.
Abstract translation: 在具有密封保持器的高压压机中，在高压缸壁与模具之间设置高压密封件，或者由两个密封环构成的两个密封环，该两个密封环由两个密封环组成， 邻接圆筒壁的外表面和与密封保持件邻接的端面，而另一个环具有邻接柱塞的圆柱形表面和与密封件保持器邻接的表面。 邻近密封保持器的圆柱形壁的第一环的外表面的部分在其中设置有大致纵向延伸的排出通道。
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公开(公告)号：US3925061A
公开(公告)日：1975-12-09
申请号：US33347673
申请日：1973-02-20
Applicant: ASEA AB
Inventor： CARLSSON LARS ERIK , GREVILLIUS NILS FREDRIK , HELLNER LARS IVAR
CPC classification number: C21C7/06 , C21C7/0075 , C21C7/064 , C21C7/10
Abstract: A method for desulphurizing steel in heats over 1 metric ton in a container, such as a ladle furnace. The container is provided with a basic slag line and additionally with a lining which substantially prevents oxygen from leaking in through or from the lining. Basic slag-formers such as lime are added to the steel melt in the container in order to obtain highly basic slag and other desulphurizing agents such as misch metal may be added. The melt is well deoxidized by means of vacuum degassing or precipitation deoxidation, and subjected to vigorous stirring and heating during the process.
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Patent Agency Ranking
公开(公告)号：US3922709A
公开(公告)日：1975-11-25
申请号：US41666973
申请日：1973-11-16
Applicant: ASEA AB
Inventor： WALLMARK JOHN TORKEL , BAKOWSKI MIECZYSLAW
IPC: H01L29/73 , H01L21/00 , H01L21/331 , H01L23/29 , H01L29/00 , H01L29/861 , H01L29/40 , H01L23/28 , H01L29/34 , H01L29/74
CPC classification number: H01L23/293 , H01L21/00 , H01L23/291 , H01L29/0661 , H01L29/408 , H01L29/74 , H01L29/8613 , H01L2924/0002 , H01L2924/00
Abstract: A semiconductor of the kind comprising at least one pn-junction the doping of which in the p-region (n-region) increases continuously or gradually from the pn-junction, and also having an isolating surface layer at least at the marginal portion of said pn-junction. In this semiconductor a first portion of said surface layer is positioned outside the substantially p-doped (ndoped) region, and a second portion of said surface layer is positioned outside the n-doped (p-doped) region of said pnjunction, said first portion having a permanently negative (positive) surface charge relative to said second portion.
Abstract translation: 一种包括至少一个pn结的半导体，其在p区（n区）中掺杂的至少一个pn结从pn结连续或逐渐增加，并且还具有隔离表面层至少在边界部分 说pn-junction。 在该半导体中，所述表面层的第一部分位于基本p掺杂（n掺杂）区域的外部，并且所述表面层的第二部分位于所述p掺杂（n掺杂）区域的n掺杂（p掺杂）区域的外部， 所述第一部分相对于所述第二部分具有永久的负（正）表面电荷。
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公开(公告)号：US3921671A
公开(公告)日：1975-11-25
申请号：US53318574
申请日：1974-12-16
Applicant: ASEA AB
Inventor： GRANSTROM STAFFAN , GORANSSON INGEMAR
CPC classification number: B22D41/14 , Y10T137/2082 , Y10T137/6579
Abstract: An electromagnetic valve for molten metal has means for forming a magnetic flux field transversely across the hole of a refractory nozzle through which molten metal can flow, and two electrodes extend through the nozzle transversely with respect to the hole and that flux field, the electrodes having cooling means and being made at least mainly of copper, each electrode having an inner end contacted by the metal for passing a current through the metal and thereby controlling the metal flow through the nozzle hole. Each electrode''s inner end is protected by a composite cladding formed by an inner layer that is, like the electrode, mainly copper, and an outer layer of a metal that is more wear-resistant, but less heat-conductive, than the inner layer, the two layers of the cladding being weld-bonded together so that they are inseparable. The inner layer having the same or substantially the same composition as the electrode, is fixed to the electrode by a film of solder which is protected from the heat of the metal, by the rapid transfer of this heat to the electrode having the cooling means, the solder film being sandwiched between the electrode and inner layer of the cladding, both of which are mainly copper and, therefore, of high heat conductivity.
Abstract translation: 一种用于熔融金属的电磁阀具有横向穿过熔融金属可流动的耐火喷嘴的孔形成磁通场的装置，并且两个电极相对于孔横向延伸穿过喷嘴，并且该磁通场具有 冷却装置并且至少主要由铜制成，每个电极具有与金属接触的内端，用于使电流通过金属，从而控制通过喷嘴孔的金属流。 每个电极的内端由复合包层保护，所述复合包层由内层形成，所述内层与电极类似，主要是铜，以及与内层相比更耐磨，但导热性更差的金属外层， 将两层包层焊接在一起使得它们是不可分离的。 具有与电极相同或基本相同的组成的内层通过被保护免受金属热量的焊料膜通过快速传递到具有冷却装置的电极而固定到电极上， 焊料膜夹在电极和包层的内层之间，两者都主要是铜，因此导热性高。
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公开(公告)号：US3914981A
公开(公告)日：1975-10-28
申请号：US54347375
申请日：1975-01-23
Applicant: ASEA AB
Inventor： NILSSON JAN , SYVAKARI PERTTI
CPC classification number: B21C25/02 , B21C23/007
Abstract: A composite die for hydrostatic extrusion is composed of a preforming portion with a conical inlet portion and an endforming portion, separated from each other along a radially dividing plane. A force-absorbing support ring surrounds that part of the end-forming portion which is in contact with and nearest the pre-forming portion. There is a gap on the outside of the part of the end-forming portion remote from the pre-forming portion. Separate rings surround and abut the calibrating endforming portion and the support ring.
Abstract translation: 用于静液压挤出的复合模具由具有锥形入口部分和端部形成部分的预成型部分组成，沿着径向分割平面彼此分开。 力吸收支撑环围绕与预成形部分接触并最接近的端部成形部分的部分。 在端部形成部分的远离预成形部分的部分的外侧上有间隙。 独立的环围绕并邻接校准端部形成部分和支撑环。
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579.发明授权Device for refueling a nuclear reactor having a core comprising a plurality of fuel assemblies 失效用于修复含有大量燃料组件的核心的核反应堆装置
公开(公告)号：US3904048A
公开(公告)日：1975-09-09
申请号：US18217171
申请日：1971-09-20
Applicant: ASEA AB
Inventor： VAN SANTEN AART , ELOFSSON KJELL
CPC classification number: G21C19/10 , G21C3/326 , G21C3/335 , G21C19/205 , Y02E30/38
Abstract: A nuclear reactor formed of fuel assemblies each including a plurality of parallel fuel rods arranged in a predetermined fuel rod lattice, which rods are freely extractable and insertable at one end of the fuel assembly, is refueled by extracting from one of the fuel assemblies a number of fuel rods substantially less than the total number of fuel rods and replacing these by inserting new fuel rods into the vacated positions. This is done for a majority of fuel assemblies of the reactor. At the next refueling operation different fuel rods from those previously replaced are removed and replaced. The removal and return of the rods is produced by a tool having a plurality of gripping members capable of engaging shoulders beneath heads formed on the upper ends of the fuel rods. This may be accomplished by providing a tool having a number of gripping members attached to the tool body corresponding to the lattice positions of the fuel rods to be extracted, having gripping members which can be pushed together to grip beneath shoulders on the upper ends of the fuel rods.
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公开(公告)号：US3903739A
公开(公告)日：1975-09-09
申请号：US50272674
申请日：1974-09-03
Applicant: ASEA AB
Inventor： KOLAVCIC PAVEL
IPC: G01L1/12
Abstract: In order to compensate for hysteresis in the measuring signal from a magnetoelastic transducer constituted by an iron core and windings arranged in the core for generating a magnetic field in the core and measuring the changes in the magnetic field is occurred when the core is affected by a mechanical force, compensating windings are located in apertures in the core at points where the field strength is considerably lower than around the apertures for the measuring windings and where the mechanical stress condition of the mechanical force acting on the core is different. The signals generated by the measuring windings and the compensating windings are added in such phase position of the signals that the hysteresis component of the compensating signal is in opposition to the hysteresis component of the signal produced by the measuring windings.
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