公开(公告)号：US20080041499A1

公开(公告)日：2008-02-21

申请号：US11505019

申请日：2006-08-16

Applicant: John R. Grassi ,  John Campbell

Inventor： John R. Grassi ,  John Campbell

IPC: C22C21/00

CPC classification number: C22F1/002 ,  B22D21/007 ,  B22D27/04 ,  B22D30/00 ,  B22D46/00 ,  C22C21/00 ,  C22F1/04

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07121318B2

公开(公告)日：2006-10-17

申请号：US11093077

申请日：2005-03-29

Applicant: John R. Grassi ,  John Campbell ,  George W. Kuhlman

Inventor： John R. Grassi ,  John Campbell ,  George W. Kuhlman

IPC: B22C9/04

CPC classification number: B22C7/023 ,  B22C9/046

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06440290B1

公开(公告)日：2002-08-27

申请号：US09729567

申请日：2000-12-04

Applicant: Luis F. Vega ,  Kevin M. Robare ,  Mark A. Holtz ,  John R. Grassi ,  Neal R. Dando

Inventor： Luis F. Vega ,  Kevin M. Robare ,  Mark A. Holtz ,  John R. Grassi ,  Neal R. Dando

IPC: C25D1124

CPC classification number: C25D11/16 ,  C25D11/24

Abstract: There is disclosed a method for surface treating aluminum products, especially vehicle wheels, to improve their brightness. The method comprises: (a) applying a chemical brightening composition to these products; (b) deoxidizing the surface of these wheel products in a nitric acid-based bath; (c) forming a porous oxide on that with an electrolytic bath containing phosphoric acid; and (d) applying, preferably spraying, a siloxane-based film to that porous oxide. In many instances, intermediate rinsing substeps are performed between these respective main steps.

Abstract translation: 公开了一种用于表面处理铝制品，特别是车轮的方法，以提高它们的亮度。 该方法包括：（a）将化学增亮组合物施用于这些产品; （b）在硝酸浴中使这些车轮产品的表面脱氧; （c）在含有磷酸的电解浴上形成多孔氧化物; 和（d）将硅氧烷基膜施加于该多孔氧化物上，优选喷雾。 在许多情况下，在这些各个主要步骤之间执行中间漂洗子步骤。