Treatment ladle
    4.
    发明公开
    Treatment ladle 有权
    Behandlungspfanne

    公开(公告)号:EP2251443A1

    公开(公告)日:2010-11-17

    申请号:EP09251258.1

    申请日:2009-05-06

    摘要: A treatment ladle comprising a ladle shell containing a generally tubular refractory ladle liner, said ladle being pivotable between a horizontal position and a vertical position, said ladle liner having a first end and a second end with a continuous sidewall therebetween, an interior space being defined between said first and second ends and the continuous sidewall,
    said ladle liner additionally comprising a pocket for holding a treatment agent, said pocket being located adjacent the first end and in fluid communication with the interior space and located closer to the top than the bottom of the interior space when the ladle is in its horizontal position and closer to the bottom than the top of the interior space when the ladle is in its vertical position, and a spout for receiving and pouring molten metal located closer to the top than the bottom of the interior space when the ladle is in its horizontal and vertical positions,
    wherein in the horizontal position, a lower volume of the interior space defined below a plane midway between the top and bottom of the interior space and between the first end and a vertical plane intermediate the first and second ends is greater than an upper volume of the interior space defined above the midway plane and between the first end and said vertical plane.
    The treatment ladle is designed for the treatment of molten metal with vaporisable additives, in particular in the preparation of ductile iron. The invention also relates to a method of treating molten metal employing the ladle.

    摘要翻译: 一种处理钢包,包括一个包含大致管状耐火浇包衬里的钢包壳,所述钢包可在水平位置和垂直位置之间枢转,所述钢包衬里具有第一端和在其之间具有连续侧壁的第二端, 在所述第一和第二端和连续侧壁之间,所述钢包衬里还包括用于保持处理剂的口袋,所述袋位于第一端附近并与内部空间流体连通并且位于比底部更靠近顶部 当钢包处于其垂直位置时,当钢包处于水平位置并且比内部空间的顶部更靠近底部时的内部空间,以及用于接收和倾倒位于更靠近顶部的熔融金属的喷口 当钢包处于其水平和垂直位置时的内部空间,其中在水平位置,较小的体积 限定在内部空间的顶部和底部之间以及第一端和第一端和第二端之间的垂直平面之间的平面下方的平面的内部空间大于在中间平面之上以及第一和第二端之间限定的内部空间的上部体积 端和垂直平面。 处理钢包设计用于处理具有可蒸发添加剂的熔融金属,特别是在球墨铸铁的制备中。 本发明还涉及一种使用钢包处理熔融金属的方法。

    Method of die casting spheroidal graphite cast iron
    5.
    发明公开
    Method of die casting spheroidal graphite cast iron 有权
    Verfahren zum Druckgiessen vonSphärogusseisen

    公开(公告)号:EP1440748A1

    公开(公告)日:2004-07-28

    申请号:EP04001589.3

    申请日:2004-01-26

    IPC分类号: B22D17/22 B22C3/00 C21C1/10

    CPC分类号: B22C9/061 B22D17/22 C21C1/10

    摘要: A method of die casting spheroidal graphite cast iron able to prevent formation of chill crystals to allow the crystallization of fine spheroidal graphite and simultaneously prevent the formation of internal defects, including the steps of preparing a die formed with a heat insulation layer at inside walls of a cavity, filling molten metal having a composition of the spheroidal graphite cast iron through a runner into the cavity, closing the runner so as to seal the cavity right before the molten metal in the cavity starts to solidify, and allowing the molten metal to solidify by the action of the inside pressure caused by crystallization of the spheroidal graphite in the sealed cavity.

    摘要翻译: 一种压铸球墨铸铁的方法,其能够防止冷凝晶体的形成,从而使细球状石墨结晶,同时防止内部缺陷的形成,包括制备在内壁上形成有隔热层的模具的步骤 将具有球墨铸铁的组成的熔融金属通过流道填充到空腔中,关闭流道以便在腔内的熔融金属开始固化之前密封腔,并使熔融金属固化 通过在密封腔中球状石墨的结晶引起的内部压力的作用。

    NEW ALLOY AND METHOD FOR PRODUCING SAME
    6.
    发明公开
    NEW ALLOY AND METHOD FOR PRODUCING SAME 有权
    新合金及其制造方法

    公开(公告)号:EP1252353A1

    公开(公告)日:2002-10-30

    申请号:EP00989092.2

    申请日:2000-12-15

    申请人: SinterCast AB

    IPC分类号: C22C37/04 C22C33/10 C21C1/08

    摘要: It is possible to generate a desirable form (soft, pliable) of sulfide inclusions in magnesium-treated cast irons. Thermodynamically, MnS and MoS2 are not stable in the presence of magnesium. However, by adding magnesium to a cast iron melt containing manganese sulfide/molybdenium sulfide as late as possible, and preferably when the molten cast iron has been dispensed into the mould, such sulfide inclusions may be preserved in magnesium-treated cast irons. Alternatively, said cast iron can also be formed by adding said sulfides directly to the iron after the magnesium reaction has taken place and an in situ equilibrium has been established between magnesium, oxygen and sulfur. Another option is to begin with a sulfur content in excess of the stoichiometric amount required to combine with the added magnesium, thus ensureing an amount of left-over sulfur to promote the formation of the desired sulfide inclusions.

    A METHOD TO PRODUCE COMPACTED GRAPHITE IRON (CGI)
    7.
    发明公开
    A METHOD TO PRODUCE COMPACTED GRAPHITE IRON (CGI) 有权
    PROCESS FOR与球墨铸铁生产铁

    公开(公告)号:EP1068365A1

    公开(公告)日:2001-01-17

    申请号:EP99914854.7

    申请日:1999-03-23

    IPC分类号: C22C33/08 C21C1/08

    CPC分类号: C21C1/10 C22C33/10 C22C37/04

    摘要: The invention relates to a method of producing objects of cast iron containing compacted (vermicular) graphite crystals, by preparing a cast iron melt having substantially a carbon content at the desired final level and a silicon content below the desired final value, so that the equilibrium temperature (TE) for the reaction between carbon and SiO2 falls near 1400 °C, and adjusting the temperature of the melt (TM) to a value between the equilibrium temperature (TE) and the 'boiling temperature' (TB), to allow absorption of oxygen by the melt to a level exceeding the desired level at the time the melt is poured into a mould, adding the required amount of silicon, and thereafter reducing the oxygen content by addition of magnesium or a magnesium containing material, preferably a FeSiMg-alloy to an oxygen level of 10 to 20 ppm oxygen in liquid solution, and forming particles of magnesium silicates as well as cast objects obtained by the method.

    A METHOD OF MANUFACTURING CAST PRODUCTS WHICH ARE CAST IN A SINGLE-PIECE STRUCTURE HAVING AN INHOMOGENEOUS GRAPHITE STRUCTURE
    9.
    发明授权

    公开(公告)号:EP0634962B1

    公开(公告)日:1998-06-03

    申请号:EP93909111.2

    申请日:1993-04-06

    申请人: SinterCast AB

    IPC分类号: B22D27/04 B22D27/20 C21C1/10

    摘要: The invention relates to a method for manufacturing a single-piece cast product having an inhomogeneous distribution of the graphite crystals in vermicular and nodular form in different parts of the finished cast product. This is achieved by adjusting the composition and physical properties of the melt or the local nucleating potential, so that the melt, in dependence on solidification time and/or the local nucleating potential, will solidify with a larger proportion of vermicular graphite crystals in those parts of the casting in which a vermicular structure is desired. In those parts in which a higher proportion of nodular graphite crystals is desired at a correspondingly smaller proportion of vermicular graphite crystals in those parts where a nodular graphite structure is desired by adjusting the local nucleation potential, it is ensured that heat is transported more rapidly away from the casting during solidification, either by providing the casting with thin sections or by placing heat-absorbing elements in the mould. The method is particularly suited for the manufacture of engine parts and power transmission parts of automotive vehicles.

    A METHOD FOR THE PRODUCTION OF COMPACTED GRAPHITE CAST IRON
    10.
    发明授权
    A METHOD FOR THE PRODUCTION OF COMPACTED GRAPHITE CAST IRON 失效
    用于生产铸铁,蠕墨

    公开(公告)号:EP0553188B1

    公开(公告)日:1997-05-07

    申请号:EP91918419.2

    申请日:1991-10-11

    申请人: SinterCast AB

    IPC分类号: B22D2/00 C21C1/10 G01N25/04

    CPC分类号: B22D2/00 C21C1/10 G01N33/20

    摘要: A method relating to the production of cast iron castings with compacted graphite crystals. The method comprises controlling and correcting the composition of the cast iron melt and securing the necessary amount of structure modifying agent. A sample of the melt is taken with a sample vessel provided with two thermocouples, one positioned so as to be in the centre of the sample and the other positioned so as to be in the vicinity of the vessel wall. The vessel wall contains or is coated with a layer of a substance which will lower the concentration of dissolved elementary magnesium in the melt in the vicinity of the vessel wall by at least 0.003 %. The temperature/time values obtained through two temperature responsive means are recorded. The occurrence of a plateau temperature will provide information as to the precipitation of flaky graphite in the vicinity of the vessel wall, therewith enabling corrections to be made to the concentration of the modifying agent and to ensure the formation of compacted graphite crystals during the whole of the pouring time required in the foundry processconcerned.