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。