公开(公告)号：US20100304161A1

公开(公告)日：2010-12-02

申请号：US12474475

申请日：2009-05-29

申请人： Shyh-Chin Huang ,  Stephen Francis Rutkowski ,  Michael Gigliotti ,  Roger Petterson

发明人： Shyh-Chin Huang ,  Stephen Francis Rutkowski ,  Michael Gigliotti ,  Roger Petterson

IPC分类号： B32B15/04 ,  B22C3/00 ,  B22D27/00 ,  B22D27/04

CPC分类号： B22D27/045

摘要： A casting process and apparatus for producing directionally-solidified castings, and castings produced therewith. The process entails applying a facecoat slurry to a surface within a mold cavity to form a continuous solid facecoat on the surface, introducing a molten metal alloy into the mold cavity so that the molten metal alloy contacts the facecoat, and then immersing the mold in a liquid coolant to cool and solidify the molten metal alloy and form a casting of the metal alloy, during which an oxide layer forms on the casting surface. The facecoat is sufficiently adherent to the oxide layer such that at least a portion of the facecoat detaches from the mold surface and remains tightly adhered to the casting surface in the event the casting contracts during cooling. The facecoat contains at least 60 weight percent of a first phase of yttria, and the balance of the facecoat is a binder phase of an inorganic material.

摘要翻译： 用于生产定向凝固铸件的铸造工艺和设备，以及由其制造的铸件。 该方法需要将表面涂层浆料施加到模腔内的表面以在表面上形成连续的实心面涂层，将熔融金属合金引入模腔中，使得熔融金属合金接触面涂层，然后将模具浸入 液体冷却剂以冷却和固化熔融金属合金，并形成金属合金的铸件，在此期间在铸造表面上形成氧化物层。 表面涂层与氧化物层充分贴合，使得至少一部分正面涂层在模具表面脱离并在冷却期间铸件收缩的情况下保持紧密地粘附于铸造表面。 面涂层含有至少60重量％的第一相的氧化钇，其余的表面涂层是无机材料的粘结相。

公开(公告)号：US20090205799A1

公开(公告)日：2009-08-20

申请号：US12033486

申请日：2008-02-19

申请人： Andrew John Elliott ,  Michael Francis Xavier Gigliotti ,  Shyh-Chin Huang ,  Roger Petterson ,  Stephen Francis Rutkowski

发明人： Andrew John Elliott ,  Michael Francis Xavier Gigliotti ,  Shyh-Chin Huang ,  Roger Petterson ,  Stephen Francis Rutkowski

IPC分类号： B22D27/04 ,  B22C9/00

CPC分类号： B22D27/045 ,  B22C3/00 ,  B22C9/04

摘要： Molds 16 for casting molten materials using a directional solidification process and methods for forming a barrier layer between a liquid cooling medium 20 and a molten material of a casting process are provided. According to an embodiment, a mold 16 for casting a molten material comprises an inner surface at least partially coated with a metal oxide slurry 32 comprising metal oxide particles, wherein the metal oxide slurry 32 is capable of inhibiting a liquid cooling medium 20 from contacting a molten metal or metal alloy when the molten metal or metal alloy is disposed within an interior of the mold 16 and the mold 16 is disposed in the liquid cooling medium 20.

摘要翻译： 提供了使用定向凝固方法铸造熔融材料的模具16和用于在液体冷却介质20和铸造工艺的熔融材料之间形成阻挡层的方法。 根据实施例，用于铸造熔融材料的模具16包括至少部分地涂覆有包含金属氧化物颗粒的金属氧化物浆料32的内表面，其中金属氧化物浆料32能够抑制液体冷却介质20接触 当熔融金属或金属合金设置在模具16的内部并且模具16设置在液体冷却介质20中时，熔融金属或金属合金。

公开(公告)号：US20050000319A1

公开(公告)日：2005-01-06

申请号：US10613908

申请日：2003-07-03

申请人： Shyh-Chin Huang ,  Pazhayannur Subramanian ,  Robert Zabala ,  Roger Petterson ,  Eric Ott ,  Srinivasa Gowda

发明人： Shyh-Chin Huang ,  Pazhayannur Subramanian ,  Robert Zabala ,  Roger Petterson ,  Eric Ott ,  Srinivasa Gowda

IPC分类号： B22F9/10 ,  B22D13/08 ,  B22F3/115 ,  C22C1/05 ,  C22C1/10 ,  B22F9/08

CPC分类号： B22D13/08 ,  B22F3/115 ,  B22F2998/00 ,  B22F2999/00 ,  C22C1/1042 ,  B22F9/10

摘要： A method for forming a dispersion-strengthened material containing nanoparticles that are uniformly dispersed in a matrix phase. The method includes adding nanoparticles and a molten material to a container to form a pool within the container and rotating the container to create a convection vortex in the pool. The convection vortex is sufficient to cause the nanoparticles to be incorporated into the molten material so as to yield a molten composite material, and further causes the molten composite material to be ejected from the container. The molten composite material is then cooled to form a solid composite body comprising a uniform dispersion of the nanoparticles.

摘要翻译： 一种形成均匀分散在基质相中的含有纳米粒子的分散强化材料的方法。 该方法包括将纳米颗粒和熔融材料添加到容器中以在容器内形成池并旋转容器以在池中产生对流涡流。 对流涡流足以使纳米颗粒结合到熔融材料中以产生熔融的复合材料，并进一步使熔融的复合材料从容器中排出。 然后将熔融的复合材料冷却以形成包含纳米颗粒的均匀分散体的固体复合体。

公开(公告)号：US20050045300A1

公开(公告)日：2005-03-03

申请号：US10652906

申请日：2003-09-02

申请人： Shyh-Chin Huang ,  Michael Francis Gigliotti ,  Stephen Rutkowski ,  Roger Petterson

发明人： Shyh-Chin Huang ,  Michael Francis Gigliotti ,  Stephen Rutkowski ,  Roger Petterson

IPC分类号： B22D25/00 ,  B22D27/04 ,  C30B11/00

CPC分类号： C30B11/002

摘要： A mold is provided for enabling casting of single crystal metallic articles including a part-defining cavity, a sorter passage positioned vertically beneath and in fluid communication with the part-defining cavity, and a seed cavity positioned vertically beneath and in fluid communication with the sorter passage. The sorter passage includes a shape suitable for encouraging a single crystal structure in solidifying molten metal. Additionally, a portion of the mold between the sorter passage and the part-defining cavity includes a notch for facilitating breakage of a cast article proximate the notch during thermal stress build-up, so as to prevent mold breakage or the inclusion of part defects.

摘要翻译： 提供了一种模具，用于使得能够铸造单晶金属制品，其包括部分限定的腔体，分隔器通道，其垂直地定位在下部并且与部件限定腔体流体连通;以及种子腔，其位于垂直下方并与分选器流体连通 通道。 分拣机通道包括适于鼓励单晶结构固化熔融金属的形状。 此外，分类器通道和部件限定腔之间的模具的一部分包括用于在热应力累积期间使切口附近的铸造件断裂的凹口，以防止模具断裂或部件缺陷的包含。

公开(公告)号：US20060130996A1

公开(公告)日：2006-06-22

申请号：US11020519

申请日：2004-12-22

申请人： Bernard Bewlay ,  Laurent Cretegny ,  Michael Gigliotti ,  Roger Petterson ,  Ann Ritter ,  Stephen Rutkowski

发明人： Bernard Bewlay ,  Laurent Cretegny ,  Michael Gigliotti ,  Roger Petterson ,  Ann Ritter ,  Stephen Rutkowski

IPC分类号： B22C1/00

CPC分类号： B22C1/186

摘要： A shell mold for casting molten material to form an article is described. The mold includes a shell for containing the molten material, formed from at least one of yttrium silicates, zirconium silicates, hafnium silicates, and rare earth silicates. The mold also includes a facecoat disposed on an inner surface of the shell that contacts the molten material. The facecoat can be made from the materials described above. A method of casting a niobium-silicide article is also described, using the shell mold described herein. A method of making the ceramic shell mold is described as well, along with a slurry composition used in the manufacture of the shell mold.

摘要翻译： 描述了用于铸造熔融材料以形成制品的壳模。 模具包括用于容纳由硅酸钇，硅酸锆，硅酸铪和稀土硅酸盐中的至少一种形成的熔融材料的壳体。 模具还包括设置在壳体的内表面上并与熔融材料接触的面涂层。 面漆可以由上述材料制成。 还描述了使用本文所述的壳模具来铸造硅化铌制品的方法。 还描述了制造陶瓷壳模的方法，以及用于制造壳模的浆料组合物。