公开(公告)号：US20210095767A1

公开(公告)日：2021-04-01

申请号：US17120383

申请日：2020-12-14

Applicant: Caterpillar Inc.

Inventor： Bao Feng ,  Connor J. Haas ,  Joseph J. Every ,  Daniel P. Vertenten ,  John M. Spangler

IPC: F16J15/34 ,  B21K1/20

Abstract: A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical, extending along a longitudinal axis between a load end and a seal end. The seal flange is disposed adjacent the seal end of the body, projecting radially in a circumscribing manner from the body. The seal flange includes a sealing face having a sealing band for sealing contact with a mating seal ring. A layer of coating composition formulated to help increase the corrosion resistance of the seal ring is applied to at least the body. A mask is applied to the seal ring to cover at least a portion of the seal ring having the layer of coating composition applied thereto such that the sealing band remains exposed. The sealing band is polished by an isotropic finishing process. The mask is removed after the sealing band is isotropically polished.

公开(公告)号：US20170350007A1

公开(公告)日：2017-12-07

申请号：US15171111

申请日：2016-06-02

Applicant: Caterpillar Inc.

Inventor： Bao Feng ,  Steven Charles Taylor

IPC: C23C16/26 ,  C23C14/32 ,  C23C14/06 ,  C23C14/58 ,  C23C14/34

CPC classification number: C23C16/26 ,  C23C14/0605 ,  C23C14/5873 ,  C23C16/56

Abstract: A method of surface treating a metallic part includes steps of coating the metallic part with a tribological thin film coating, and tumbling the metallic part after the coating step to remove surface micro-particles. The tumbling step may also remove delaminated areas of the tribological thin film coating. According to some embodiments, the metallic part may be tumbled with an alkaline solution.

公开(公告)号：US20170335969A1

公开(公告)日：2017-11-23

申请号：US15160841

申请日：2016-05-20

Applicant: Caterpillar Inc.

Inventor： John M. Spangler ,  Bao Feng ,  Daniel P. Vertenten ,  Connor J. Haas

IPC: F16J15/34

CPC classification number: F16J15/3436 ,  F16J15/3404 ,  F16J15/344 ,  F16J15/3496

Abstract: A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed adjacent the seal end of the body. The seal flange projects radially in circumscribing manner from the body to an outer perimeter thereof. The seal flange includes a sealing face having a sealing band, disposed adjacent the outer perimeter of the seal flange, and an inner relieved area, disposed between the sealing band and an inner perimeter of the seal flange. The sealing band is polished by an isotropic finishing process after a layer of coating composition is applied to at least the body. The layer of coating composition is formulated to withstand the isotropic finishing process and to help increase the corrosion resistance of the seal ring.

公开(公告)号：US20160230274A1

公开(公告)日：2016-08-11

申请号：US15132818

申请日：2016-04-19

Applicant: Caterpillar Inc.

Inventor： Colm Martin Flannery ,  Steven Charles Taylor ,  Bao Feng ,  Lucy Victoria Berg ,  Joseph Ryan Sullivan

IPC: C23C16/26 ,  C23C14/06 ,  C23C16/44 ,  C23C14/22 ,  C23C16/30 ,  C23C16/06

CPC classification number: C23C28/343 ,  C23C28/32 ,  C23C28/34 ,  C23C28/42 ,  F02M59/445 ,  F02M61/166 ,  F02M2200/02 ,  F02M2200/05 ,  F02M2200/9038

Abstract: A multilayer coating for a metallic surface of a component is provided. The multilayer coating includes a first coating having a metal nitride. The first coating at least partially overlaps the metallic surface. The multilayer coating also includes a second coating having a metal. The second coating at least partially overlaps the first coating. The multilayer coating further includes a third coating having a Diamond Like Carbon (DLC) material. The third coating at least partially overlaps the second coating. The first coating, the second coating, and the third coating differ from one another with respect to at least one of hardness, elasticity, corrosion resistance, and lubricity. The multilayer coating includes at least ten overlapping layers having successive layers of the first coating, the second coating, and the third coating in repeating sequence.

Abstract translation: 提供了用于元件的金属表面的多层涂层。 多层涂层包括具有金属氮化物的第一涂层。 第一涂层至少部分地与金属表面重叠。 多层涂层还包括具有金属的第二涂层。 第二涂层至少部分地与第一涂层重叠。 多层涂层还包括具有金刚石碳（DLC）材料的第三涂层。 第三涂层至少部分地与第二涂层重叠。 第一涂层，第二涂层和第三涂层相对于硬度，弹性，耐腐蚀性和润滑性中的至少一种彼此不同。 所述多层涂层包括至少十个具有重复顺序的第一涂层，第二涂层和第三涂层的连续层的重叠层。

公开(公告)号：US09016429B2

公开(公告)日：2015-04-28

申请号：US13855370

申请日：2013-04-02

Applicant: Caterpillar, Inc.

Inventor： Bao Feng ,  M. Brad Beardsley

IPC: F16H57/021 ,  F16C32/06

CPC classification number: F16H57/021 ,  B60K17/046 ,  F16C17/02 ,  F16C17/18 ,  F16C32/0629 ,  F16C33/043 ,  F16C2202/04 ,  F16C2223/02 ,  F16C2240/46 ,  F16C2240/54 ,  F16C2240/60 ,  F16C2361/61 ,  F16H2057/085

Abstract: A bearing system includes a sleeve bearing supported on a shaft and a gear supported on the sleeve bearing. The shaft has an outer diameter shaft surface, the sleeve bearing has an inner diameter bearing surface and an outer diameter bearing surface, and the gear has a gear bore surface. At least one of the outer diameter shaft surface, the inner diameter bearing surface, the outer diameter bearing surface, and the gear bore surface includes an isotropic surface finish and a hard thin film over the isotropic surface finish. During a break-in period of operation of the bearing system, the hard thin film over the isotropic surface finish breaks in a counter surface of the bearing system to extend a hydrodynamic lubrication period of operation of the bearing system.

Abstract translation: 轴承系统包括支撑在轴上的套筒轴承和支撑在套筒轴承上的齿轮。 轴具有外径轴表面，套筒轴承具有内径支承表面和外径轴承表面，齿轮具有齿轮孔表面。 外径轴表面，内径轴承表面，外径轴承表面和齿轮孔表面中的至少一个包括各向同性表面光洁度和各向同性表面光洁度上的硬质薄膜。 在轴承系统的运转期间，各向同性表面光洁度的硬质薄膜在轴承系统的相对表面中断，从而延伸了轴承系统的流体动力润滑时间。