公开(公告)号：US09272332B2

公开(公告)日：2016-03-01

申请号：US13628490

申请日：2012-09-27

Applicant: GM Global Technology Operations LLC

Inventor： Edward P. Becker ,  Yucong Wang

IPC: B22F3/08 ,  H01F41/02 ,  H01F1/057 ,  C22C33/02 ,  C22C38/00

CPC classification number: B22F3/08 ,  B22F2998/00 ,  C22C33/02 ,  C22C38/001 ,  C22C38/005 ,  C22C2202/00 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/0293 ,  B22F1/0059 ,  B22F3/02 ,  B22F3/10

Abstract: A method of near net shaping a rare earth permanent magnet and a permanent magnet. The method includes introducing a magnetic material powder into a die, closing the die and shock compacting the powder in the die and sintering the compacted magnet powder to form the rare earth permanent magnet part. In one form, the magnetic material being subjected to compaction is a mixture made up of two or more different magnetic material powder precursors. Additional materials may be added to the mixture. One such additional material may be a lubricant to reduce the likelihood of cracking, while another may be a coating to provide oxidation protection of the mixture. Evacuation or inert environments may also be used either prior to or in conjunction with the sintering or related high-temperature part of the process.

Abstract translation: 一种近净成形稀土永磁体和永磁体的方法。 该方法包括将磁性材料粉末引入模具中，封闭模具并冲击压实模具中的粉末并烧结压实的磁体粉末以形成稀土永磁体部件。 在一种形式中，经受压实的磁性材料是由两种或更多种不同的磁性材料粉末前体组成的混合物。 可以向混合物中加入另外的材料。 一种这样的附加材料可以是减少开裂可能性的润滑剂，而另一种可以是提供混合物的氧化保护的涂层。 疏散或惰性环境也可以在烧结或过程的相关高温部分之前或结合使用。

公开(公告)号：US20160034614A1

公开(公告)日：2016-02-04

申请号：US14449324

申请日：2014-08-01

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Bing Li ,  Yucong Wang

IPC: G06F17/50 ,  B22D21/00 ,  B22D46/00

CPC classification number: G06F17/5009 ,  B22D21/007 ,  B22D46/00 ,  G06F17/5018 ,  G06F2217/16 ,  G06F2217/41

Abstract: A device and article of manufacture to predict material properties of a cast aluminum-based component. In one form, a computer-based system includes numerous computation modules programmably cooperative with one another such that upon receipt of data that corresponds to the cast aluminum-based component, the modules provide performance indicia of the material. The modules include a thermodynamic calculation module, a thermal-physical property module, a mechanical property module and a materials selection or alloy design module. The combination of the modules along with known material and geometric databases—in addition to microstructural and defect databases—promotes the generation of materials properties needed for casting design, casting process simulation, CAE nodal property mapping and durability analysis.

Abstract translation: 用于预测铸铝基部件的材料特性的装置和制品。 在一种形式中，基于计算机的系统包括可编程地彼此协作的许多计算模块，使得在接收到与铸铝基组件相对应的数据时，模块提供材料的性能标记。 模块包括热力学计算模块，热物理属性模块，机械性能模块和材料选择或合金设计模块。 模块与已知材料和几何数据库的组合以及显微结构和缺陷数据库 - 促进了铸造设计，铸造过程模拟，CAE节点属性映射和耐久性分析所需的材料属性的生成。

公开(公告)号：US20150226110A1

公开(公告)日：2015-08-13

申请号：US14175316

申请日：2014-02-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yucong Wang ,  Louis P. Begin

IPC: F02B37/18

CPC classification number: F02B37/186 ,  F01D17/105 ,  F05D2220/40 ,  Y02T10/144

Abstract: A turbocharger for an internal combustion engine includes a rotating assembly having a turbine wheel disposed inside a turbine housing and a compressor wheel disposed inside a compressor cover. The turbocharger also includes a waste-gate assembly configured to selectively redirect at least a portion of the engine's post-combustion gases away from the turbine wheel. The waste-gate assembly includes a valve, a rotatable shaft connected to the valve, and a bushing fixed relative to the turbine housing and disposed concentrically around the shaft such that the shaft rotates inside the bushing to thereby selectively open and close the valve. The shaft is defined by an outer surface in contact with the bushing and the outer surface includes a coating composed of a ceramic-based material. An internal combustion engine employing such a turbocharger is also disclosed.

Abstract translation: 用于内燃机的涡轮增压器包括旋转组件，其具有设置在涡轮壳体内的涡轮机叶轮和设置在压缩机盖内的压缩机叶轮。 涡轮增压器还包括废门组件，其被配置为选择性地使发动机的后燃烧气体的至少一部分远离涡轮机轮。 废门组件包括阀，连接到阀的可旋转轴和相对于涡轮机壳体固定并且围绕轴同心设置的衬套，使得轴在衬套内旋转，从而选择性地打开和关闭阀。 轴由与衬套接触的外表面限定，并且外表面包括由陶瓷基材料组成的涂层。 还公开了一种使用这种涡轮增压器的内燃机。

公开(公告)号：US20140319956A1

公开(公告)日：2014-10-30

申请号：US13871109

申请日：2013-04-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Richard Jack Osborne ,  Yucong Wang ,  Margarita Thompson

IPC: H02K17/16 ,  B22D19/00

CPC classification number: H02K17/165 ,  B22D19/0054 ,  B22D21/007 ,  C22C21/00

Abstract: A rotor includes a shorting ring defining a plurality of cavities therein, and a plurality of conductor bars each integral with the shorting ring and having an end disposed within a respective one of the plurality of cavities. The shorting ring and each of the conductor bars are formed from an aluminum alloy including a lanthanoid present in an amount of from about 0.1 part by weight to about 0.5 parts by weight based on 100 parts by weight of the aluminum alloy. An aluminum alloy, and a method of forming a rotor are also disclosed.

Abstract translation: 转子包括在其中限定多个空腔的短路环和多个导体条，每个导体条与短路环整体形成，并且具有设置在多个空腔中的相应一个空腔内的端部。 短路环和每个导体棒由包含镧系元素的铝合金形成，所述镧系元素的存在量相对于铝合金的100重量份为约0.1重量份至约0.5重量份。 还公开了一种铝合金和一种形成转子的方法。

公开(公告)号：US20130084204A1

公开(公告)日：2013-04-04

申请号：US13628149

申请日：2012-09-27

Applicant: GM Global Technology Operations LLC

Inventor： Yucong Wang

IPC: B22F1/02 ,  B22F3/10

CPC classification number: B22F1/025 ,  C22C33/0207 ,  C22C33/0278 ,  H01F41/0293

Abstract: A method of making a permanent magnet and a permanent magnet. The method includes providing combining a core material and a surface material so that the surface concentration of dysprosium, terbium, or both in the surface material is high while simultaneously keeping the bulk concentration of dysprosium, terbium, or both low. From this, the magnet has a non-uniform distribution of dysprosium, terbium or both. Varying approaches to preparing the combined core and surface materials may be used to ensure that the surface powder effectively wraps around the core powder as a way to achieve the high surface concentration and low bulk concentration. In one form, the core material may be made from a neodymium-iron-boron permanent magnet precursor material.

Abstract translation: 一种制造永磁体和永磁体的方法。 该方法包括提供芯材和表面材料的组合，使得表面材料中的镝，铽或二者的表面浓度高，同时保持镝，铽或二者的二者的体积浓度低。 由此，磁体具有镝，铽或两者的不均匀分布。 可以使用制备组合的芯和表面材料的不同方法来确保表面粉末有效地包裹在芯粉末周围，作为实现高表面浓度和低体积浓度的一种方式。 在一种形式中，芯材料可以由钕 - 铁 - 硼永磁体前体材料制成。