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公开(公告)号：US07147031B2
公开(公告)日：2006-12-12
申请号：US10665783
申请日：2003-09-19
申请人： John R. Grassi , John Campbell , George W. Kuhlman
发明人： John R. Grassi , John Campbell , George W. Kuhlman
IPC分类号： B22C9/04
摘要： A method and apparatus for the lost pattern casting of metals employs an erodable mold including a particulate material and a binder. An erodable backing or coating may be used to support the erodable mold. After a molten metal casting is poured in the mold, the erodable backing and the mold are contacted with a solvent. This cools the molten metal so that it at least partially solidifies to form a casting. At least a part of the mold is removed. Also, the coating or backing may be removed.
摘要翻译： 用于金属损失图案铸造的方法和装置采用包括颗粒材料和粘合剂的可侵蚀模具。 可侵蚀的背衬或涂层可用于支撑可侵蚀的模具。 将熔融金属铸件倒入模具中之后，将可侵蚀的背衬和模具与溶剂接触。 这使熔融金属冷却，使其至少部分地固化以形成铸件。 模具的至少一部分被去除。 此外，可以去除涂层或背衬。
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公开(公告)号：US07121318B2
公开(公告)日：2006-10-17
申请号：US11093077
申请日：2005-03-29
申请人： John R. Grassi , John Campbell , George W. Kuhlman
发明人： John R. Grassi , John Campbell , George W. Kuhlman
IPC分类号： B22C9/04
摘要： A method and apparatus for the lost pattern casting of metals is disclosed. In the method, a pattern is formed from a material and a mold is formed around at least a portion of the pattern. The mold includes a particulate material and a binder. The pattern is removed from the mold and molten metal is delivered into the mold. The mold is contacted with the solvent and the molten metal is cooled such that it at least partially solidifies to form a casting. The step of cooling includes contacting a shell of solidifying metal around the molten metal with the solvent. An apparatus is also disclosed.
摘要翻译： 公开了一种用于金属损失图案铸造的方法和装置。 在该方法中，由材料形成图案，并且在图案的至少一部分周围形成模具。 模具包括颗粒材料和粘合剂。 模具从模具中取出，熔融金属被输送到模具中。 模具与溶剂接触并且熔融金属被冷却，使得其至少部分地固化以形成铸件。 冷却步骤包括使熔融金属周围的凝固金属壳与溶剂接触。 还公开了一种装置。
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公开(公告)号：US07216691B2
公开(公告)日：2007-05-15
申请号：US10614601
申请日：2003-07-07
申请人： John R. Grassi , John Campbell , George W. Kuhlman
发明人： John R. Grassi , John Campbell , George W. Kuhlman
摘要： A process for the casting of metals includes the steps of providing a mold, delivering a molten metal into the mold, solidifying the molten metal, and removing at least a portion of the mold. The step of removing at least a portion of the mold begins before the step of solidifying the molten metal has been finished. An apparatus to deliver a solvent to a mold is also provided.
摘要翻译： 用于铸造金属的方法包括以下步骤：提供模具，将熔融金属输送到模具中，固化熔融金属，以及去除模具的至少一部分。 在熔融金属的凝固步骤已经完成之前，除去模具的至少一部分的步骤开始。 还提供了将溶剂输送到模具的装置。
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公开(公告)号：US07165600B2
公开(公告)日：2007-01-23
申请号：US10658919
申请日：2003-09-10
申请人： John R. Grassi , John Campbell , George W. Kuhlman
发明人： John R. Grassi , John Campbell , George W. Kuhlman
IPC分类号： B22C9/00
CPC分类号： B22C1/167 , B22C1/18 , B22D29/002
摘要： A mold for the casting of metals including an aggregate comprising a refractory particulate material and a soluble binder which provides for minimal heat transfer between the mold and the molten metal during filling. The aggregate preferably includes at least a proportion of particulate material having a heat diffusivity at least as low as silica sand to reduce the chilling effect of the mold. The mold is removed from the casting the action of a solvent, which simultaneously cools and solidifies the casting at a maximum rate. Processes for forming the mold and the casting of metals using the mold are also disclosed.
摘要翻译： 一种用于铸造金属的模具，包括包含耐火颗粒材料和可溶性粘合剂的聚集体，其在填充期间提供模具和熔融金属之间的最小热传递。 聚集体优选包括至少一定比例的具有至少与硅砂相同的热扩散率的颗粒材料，以降低模具的冷却效果。 将模具从铸件中除去溶剂的作用，溶剂同时以最大速率冷却和固化铸件。 还公开了用于形成模具和使用模具铸造金属的工艺。
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公开(公告)号：US20100116453A1
公开(公告)日：2010-05-13
申请号：US12578195
申请日：2009-10-13
申请人： John R. Grassi , John Campbell , Christopher Shaw
发明人： John R. Grassi , John Campbell , Christopher Shaw
CPC分类号： C22B9/006 , B22D18/06 , C21C5/567 , C22B9/023 , C22B21/0084 , C22B21/06 , F27B3/045 , F27D3/145 , Y02P10/234
摘要： A quiescent melt handling system includes a melting furnace and a holding furnace communicating with the melting furnace for holding a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range of 4-100 to 1. Also provided is structure in the holding furnace for separating inclusions from the melt in the holding furnace. A mold communicates with the holding furnace. A counter gravity casting system, which might comprise a vacuum assisted casting system, draws the melt into the mold.
摘要翻译： 静态熔体处理系统包括熔化炉和与熔化炉连通以保持熔融金属熔体的保持炉。 保持炉具有相对较大的表面积和相对较浅的深度，其深度比在4-100:1的范围内。还提供了用于从夹持炉中的熔体中分离夹杂物的保持炉中的结构。 模具与保温炉相通。 可以包括真空辅助铸造系统的反向重力铸造系统将熔体吸入模具中。
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公开(公告)号：US20080041499A1
公开(公告)日：2008-02-21
申请号：US11505019
申请日：2006-08-16
申请人： John R. Grassi , John Campbell
发明人： John R. Grassi , John Campbell
IPC分类号： C22C21/00
摘要： A shaped metal casting made in an aggregate mold comprises fine solidification microstructure that is finer than the solidification microstructure of an analogous metal casting made from conventional molding processes. The solidification microstructure may be up to five times finer than the solidification microstructure of a conventionally prepared casting. In preferred embodiments, as a result of directional solidification, the fine solidification microstructure is substantially continuous from a distal end of the casting to a proximal end of the casting, and exhibits greatly enhanced soundness. Because of the control of the uniformity of freezing of the casting, its properties are substantially uniform.
摘要翻译： 在集合模具中制成的成形金属铸件包括比由常规模制工艺制成的类似金属铸件的凝固微结构更细的精细凝固组织。 固化微结构可以比通常制备的铸件的凝固组织略微五倍。 在优选实施例中，作为定向凝固的结果，精细凝固微结构从铸件的远端到铸件的近端基本上是连续的，并且显示出大大提高的稳定性。 由于铸件的冷冻均匀性的控制，其特性基本上是均匀的。
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公开(公告)号：US08303890B2
公开(公告)日：2012-11-06
申请号：US12578195
申请日：2009-10-13
申请人： John R. Grassi , John Campbell , Christopher Shaw
发明人： John R. Grassi , John Campbell , Christopher Shaw
IPC分类号： C22B7/00
CPC分类号： C22B9/006 , B22D18/06 , C21C5/567 , C22B9/023 , C22B21/0084 , C22B21/06 , F27B3/045 , F27D3/145 , Y02P10/234
摘要： A quiescent melt handling system includes a melting furnace and a holding furnace communicating with the melting furnace for holding a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range of 4-100 to 1. Also provided is structure in the holding furnace for separating inclusions from the melt in the holding furnace. A mold communicates with the holding furnace. A counter gravity casting system, which might comprise a vacuum assisted casting system, draws the melt into the mold.
摘要翻译： 静态熔体处理系统包括熔化炉和与熔化炉连通以保持熔融金属熔体的保持炉。 保持炉具有相对较大的表面积和相对较浅的深度，其深度比在4-100:1的范围内。还提供了用于从夹持炉中的熔体中分离夹杂物的保持炉中的结构。 模具与保温炉相通。 可以包括真空辅助铸造系统的反向重力铸造系统将熔体吸入模具中。
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公开(公告)号：US20080202644A1
公开(公告)日：2008-08-28
申请号：US11710452
申请日：2007-02-23
申请人： John R. Grassi , John Campbell
发明人： John R. Grassi , John Campbell
IPC分类号： B22D17/00
CPC分类号： F27B3/045 , C22B9/006 , C22B9/023 , F27D3/145 , Y02P10/234
摘要： A quiescent melt handling system includes a holding furnace (2, 120, 320-720) for a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range of 4-100 to 1. Also provided is structure (650-680) in the holding furnace for separating inclusions from the melt in the holding furnace. A quiescent transfer casting method includes melting a metal to form a melt and transferring the melt into a holding furnace. A hydrogen content in the melt is passively equilibrated with a dry atmosphere maintained in the holding furnace. Subsequently, the melt is withdrawn from the holding furnace.
摘要翻译： 静态熔体处理系统包括用于熔融金属熔体的保持炉（2,120,320-720）。 保持炉具有相对较大的表面积和相对较浅的深度，其深度比在4-100:1的范围内。还提供了用于从熔体中分离夹杂物的保持炉中的结构（650-680） 在保温炉中。 静态转移铸造方法包括熔化金属以形成熔体并将熔体转移到保持炉中。 熔体中的氢含量被保持在保持炉中的干燥气氛被动平衡。 随后，将熔体从保持炉中取出。
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公开(公告)号：US06841120B2
公开(公告)日：2005-01-11
申请号：US10171175
申请日：2002-06-13
申请人： John R. Grassi , John Campbell
发明人： John R. Grassi , John Campbell
IPC分类号： B22D17/00 , B22D18/00 , B22D18/04 , B22D39/02 , B22D39/06 , C22B21/00 , F27D3/14 , B22D41/08
CPC分类号： C22B21/0084 , B22D18/04 , B22D39/02 , F27D3/14
摘要： An apparatus for dispensing a molten material from a reservoir of molten material includes a dispensing chamber in communication with the reservoir and a first valve adapted to regulate communication of the dispensing chamber with the reservoir. A riser communicates with the dispensing chamber for dispensing the molten material, and a second valve is adapted to regulate communication of the riser with the dispensing chamber. Also disclosed is a method for reducing the inclusion of oxides in a casting of a molten metal.
摘要翻译： 用于从熔融材料的容器分配熔融材料的装置包括与储存器连通的分配室和适于调节分配室与储存器的连通的第一阀。 提升器与分配室连通以分配熔融材料，并且第二阀适于调节提升管与分配室的连通。 还公开了一种用于减少熔融金属铸件中氧化物的包含的方法。
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10.发明授权公开(公告)号：US08752365B2
公开(公告)日：2014-06-17
申请号：US13261306
申请日：2010-12-15
申请人： John Campbell , Harald Hagin , Fritz Papst
发明人： John Campbell , Harald Hagin , Fritz Papst
IPC分类号： F01N3/00
CPC分类号： F01N3/2066 , F01N2610/02 , F01N2610/1453 , Y02T10/24
摘要： The present invention provides for a method for dosing an urea-based reducing agent into a exhaust gas stream generated from a combustion engine and addressed to an aftertreatment system, e.g. SCR or SCRT system. According to the method of the invention the gas exhaust stream is conveyed into a dosing housing which develops along a longitudinal axis. In particular the gas is conveyed by generating an annular inlet jet inclined with respect of said axis. The urea-based reducing agent is injected by generating, inside the housing, an urea-based reducing agent spray which is preferably coaxial to said axis of the housing.
摘要翻译： 本发明提供了一种用于将尿素基还原剂计量到从内燃机产生的排气流并且被送到后处理系统的方法。 SCR或SCRT系统。 根据本发明的方法，排气流被输送到沿纵向轴线形成的计量外壳。 特别地，通过产生相对于所述轴线倾斜的环形入口射流来输送气体。 尿素还原剂通过在壳体内产生优选与壳体的所述轴线同轴的尿素还原剂喷射来注入。
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