公开(公告)号：US20160097459A1

公开(公告)日：2016-04-07

申请号：US14507765

申请日：2014-10-06

Applicant: Caterpillar Inc.

Inventor： Mark Veliz ,  Daniel Sordelet

IPC: F16K1/34 ,  F02M35/10 ,  B05D1/02 ,  F16K25/00

CPC classification number: F16K1/34 ,  B05D1/02 ,  C23C4/02 ,  C23C4/18 ,  C23C8/02 ,  C23C8/24 ,  C23C8/30 ,  C23C8/36 ,  C23C8/48 ,  C23C8/54 ,  F01L3/04 ,  F01L2103/00 ,  F02M35/10255 ,  F16K25/005

Abstract: A valve for use in an internal combustion engine is disclosed. The valve includes a stem connected to a fillet disposed between the stem and a seat face. A thermal spray technique, such as a high velocity oxy fuel coating spray (HVOF) is applied to the seat face. A nitriding treatment that includes a nitrogen source, which may or may not contain carbon, and heat may be applied after the HVOF spray. The heat allows the nitrogen and/or carbon to penetrate the HVOF layer and the seat face to form a compound zone. The compound zone enhances the wear resistance of the surface during engine operation.

Abstract translation: 公开了一种用于内燃机的阀。 阀包括连接到设置在杆和座面之间的圆角的杆。 将热喷涂技术，例如高速氧燃料喷涂（HVOF）施加到座面上。 在HVOF喷涂之后，可以施加包括可能含有或可以不含碳的氮源和热的氮化处理。 热量允许氮和/或碳穿透HVOF层和座面以形成复合区。 复合区域在发动机运行期间增强了表面的耐磨性。

公开(公告)号：US09644504B2

公开(公告)日：2017-05-09

申请号：US14660018

申请日：2015-03-17

Applicant: Caterpillar Inc.

Inventor： Mark Veliz ,  Mark Geissler

IPC: F01L3/02 ,  F01L3/00 ,  F01L3/20 ,  B23K11/16 ,  B23K20/12 ,  B23K20/22 ,  C22C19/05 ,  B23K103/04 ,  B23K103/08 ,  B23K103/18

CPC classification number: F01L3/02 ,  B23K11/16 ,  B23K20/129 ,  B23K20/22 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/18 ,  C22C19/057 ,  F01L3/00 ,  F01L3/20 ,  F01L2101/00

Abstract: A valve for use in an internal combustion engine is disclosed. The valve includes a stem friction welded to a head portion. The head portion is cast from a single crystal metal using a casting process that creates little or no grain boundaries. The single crystal metal can be a nickel based superalloys such as CMSX-4, CMSX 3, Rene N5, and Rene N6. By having little or no grain boundaries, defects that occur in other types of casting material, such as large numbers of grain boundaries can be minimized. This allows the head portion and particularly the combustion face to withstand an operating temperature in the combustion chamber in excess of 850° C.

公开(公告)号：US20160273418A1

公开(公告)日：2016-09-22

申请号：US14660018

申请日：2015-03-17

Applicant: Caterpillar Inc.

Inventor： Mark Veliz ,  Mark Geissler

IPC: F01L3/02 ,  B23K20/22 ,  B23K20/12 ,  B23K11/16 ,  F01L3/20 ,  C22C19/05

CPC classification number: F01L3/02 ,  B23K11/16 ,  B23K20/129 ,  B23K20/22 ,  B23K2103/04 ,  B23K2103/08 ,  B23K2103/18 ,  C22C19/057 ,  F01L3/00 ,  F01L3/20 ,  F01L2101/00

Abstract: A valve for use in an internal combustion engine is disclosed. The valve includes a stem friction welded to a head portion. The head portion is cast from a single crystal metal using a casting process that creates little or no grain boundaries. The single crystal metal can be a nickel based superalloys such as CMSX-4, CMSX 3, Rene N5, and Rene N6. By having little or no grain boundaries, defects that occur in other types of casting material, such as large numbers of grain boundaries can be minimized. This allows the head portion and particularly the combustion face to withstand an operating temperature in the combustion chamber in excess of 850° C.

Abstract translation: 公开了一种用于内燃机的阀。 阀包括焊接到头部的杆摩擦。 使用铸造工艺从单晶金属铸造头部，其产生很少或没有晶界。 单晶金属可以是镍基超级合金如CMSX-4，CMSX 3，Rene N5和Rene N6。 通过几乎没有或没有晶界，可以使在其它类型的铸造材料（例如大量晶界）中发生的缺陷最小化。 这允许头部部分，特别是燃烧面承受超过850℃的燃烧室中的工作温度。