公开(公告)号：US08273416B2

公开(公告)日：2012-09-25

申请号：US13209784

申请日：2011-08-15

Applicant: David A. Helmick ,  Yuk-Chiu Lau ,  David Vincent Bucci

Inventor： David A. Helmick ,  Yuk-Chiu Lau ,  David Vincent Bucci

IPC: B05D1/00 ,  B05D3/02 ,  B05D3/04

CPC classification number: C23C30/00 ,  C23C14/16 ,  C23C26/00 ,  F05C2201/0409 ,  Y10T428/1266 ,  Y10T428/12826 ,  Y10T428/12931 ,  Y10T428/12944 ,  Y10T428/26 ,  Y10T428/31678

Abstract: A coating system and process for protecting component surfaces exposed to sulfur-containing environments at elevated temperatures. The coating system includes a sulfidation-resistant overlay coating that is predominantly niobium or molybdenum.

Abstract translation: 涂层系统和用于在升高的温度下保护暴露于含硫环境的组分表面的方法。 涂层系统包括主要是铌或钼的耐硫化覆盖涂层。

公开(公告)号：US20100247927A1

公开(公告)日：2010-09-30

申请号：US12411801

申请日：2009-03-26

Applicant: David A. Helmick ,  Yuk-Chiu Lau ,  David Vincent Bucci

Inventor： David A. Helmick ,  Yuk-Chiu Lau ,  David Vincent Bucci

IPC: C23F11/00 ,  B32B15/04 ,  B32B18/00 ,  B05D1/36 ,  B05D5/00

CPC classification number: C23C30/00 ,  C23C14/16 ,  C23C26/00 ,  F05C2201/0409 ,  Y10T428/1266 ,  Y10T428/12826 ,  Y10T428/12931 ,  Y10T428/12944 ,  Y10T428/26 ,  Y10T428/31678

Abstract: A coating system and process for protecting component surfaces exposed to sulfur-containing environments at elevated temperatures. The coating system includes a sulfidation-resistant overlay coating that is predominantly niobium or molybdenum.

Abstract translation: 涂层系统和用于在升高的温度下保护暴露于含硫环境的组分表面的方法。 涂层系统包括主要是铌或钼的耐硫化覆盖涂层。

公开(公告)号：US06626084B1

公开(公告)日：2003-09-30

申请号：US09889710

申请日：2001-07-18

Applicant: Seiichi Nakayama ,  Shogo Muramatsu ,  Akira Takenaka

Inventor： Seiichi Nakayama ,  Shogo Muramatsu ,  Akira Takenaka

IPC: F01B300

CPC classification number: F04B27/0886 ,  F05C2201/0409 ,  F05C2253/12

Abstract: A semi-spherical shoe 1 includes an end face 1B which is disposed in sliding contact with a swash plate 3 and a semi-spherical surface 1A which is disposed in sliding contact with a semi-spherical recess 2A formed in a piston 2. A spherical recess 1C is formed in the top portion of the semi-spherical surface 1A to define a space 4 which serves as a reservoir of lubricant oil between the spherical recess 1C and the semi-spherical recess 2B. If the volume of the space 4 which serves as a reservoir of lubricant oil is increased, an accumulation of abraded power in the spherical recess 1C which forms the space can be prevented in a favorable manner.

Abstract translation: 半球形鞋1包括与斜盘3滑动接触的端面1B和与形成在活塞2中的半球形凹部2A滑动接触的半球面1A。球面 凹槽1C形成在半球形表面1A的顶部，以限定用作在球形凹槽1C和半球形凹部2B之间的润滑油储存器的空间4。 如果作为润滑油的储存器的空间4的容积增加，则可以以有利的方式防止形成空间的球形凹部1C中的磨损力的累积。

公开(公告)号：US5645896A

公开(公告)日：1997-07-08

申请号：US588141

申请日：1996-01-18

Applicant: Robert A.R. Mills

Inventor： Robert A.R. Mills

IPC: F04C2/107 ,  C23C4/10

CPC classification number: F04C2/1075 ,  F04C2230/00 ,  F04C2230/91 ,  F05C2201/0406 ,  F05C2201/0409 ,  F05C2201/0433 ,  F05C2203/0813 ,  F05C2203/0821 ,  F05C2203/0826 ,  Y10T428/12576 ,  Y10T428/31678

Abstract: A hardfacing for downhole progressing cavity pumps is disclosed as well as a method for producing same. The hardfacing consists of a metal carbide layer applied to the ferrous pump rotor body by way of plasma spraying and a top layer of metallic material having a lower hardness than the metal carbide. The metal carbide layer has a grainy surface with a plurality of peaks and intermediate depressions, the peaks being formed by metal carbide grains at the surface of the metal carbide layer. The thickness of the top layer is adjusted such that the depressions between the peaks of the metal carbide layer are completely filled thereby providing the rotor with a metal carbide hardfacing of significantly reduced surface roughness. In the process of the invention, the pump rotor, which may be provided with a molybdenum bonding layer, is plasma coated with the metal carbide and the resulting carbide layer is covered with the metallic material top layer. The top layer is polished either until the dimensions thereof are within the tolerances acceptable for the finished rotor or until a majority of the peaks of the carbide layer are exposed. The hardfacing significantly increases the service life of the rotor and stator of downhole progressing cavity pumps.

Abstract translation: 公开了一种用于井下前进腔泵的硬化面及其制造方法。 表面硬化由通过等离子喷涂施加到铁水泵转子体上的金属碳化物层和具有比金属碳化物低的硬度的金属材料顶层组成。 金属碳化物层具有多个峰和中间凹陷的颗粒状表面，该峰由金属碳化物层表面的金属碳化物颗粒形成。 调整顶层的厚度，使得金属碳化物层的峰之间的凹陷被完全填充，从而为转子提供显着降低的表面粗糙度的金属碳化物表面硬化。 在本发明的方法中，可以设置有钼粘合层的泵转子被等离子体涂覆有金属碳化物，并且所得到的碳化物层被金属材料顶层覆盖。 抛光顶层，直到其尺寸在成品转子可接受的公差内，或直到碳化物层的大部分峰暴露。 表面硬化显着增加了井下前进腔泵的转子和定子的使用寿命。

公开(公告)号：US5313919A

公开(公告)日：1994-05-24

申请号：US76225

申请日：1993-06-14

Applicant: Vemulapalli D. N. Rao ,  Daniel M. Kabat ,  David A. Yeager

Inventor： Vemulapalli D. N. Rao ,  Daniel M. Kabat ,  David A. Yeager

IPC: F02B3/06 ,  F02B77/02 ,  F02F3/10 ,  F16J1/02 ,  F16N15/00 ,  F22B5/00

CPC classification number: F02F3/10 ,  F02B77/02 ,  F16J1/02 ,  F16N15/00 ,  F02B3/06 ,  F05C2201/021 ,  F05C2201/0409 ,  F05C2201/0448 ,  F05C2203/0808 ,  Y10T29/49263

Abstract: A low-friction piston construction for use in an oil-fed cylinder bore with the piston skirt relieved to define lands that are coated with SFL (graphite, MoS.sub.2, BN, and a special expoxy resin). A method of making such piston construction including provision of asperities on the skirt wall onto which the SFL coating is thermally sprayed and formation of small pockets at the mouth of the asperities to additionally act as oil replenishing reservoirs. A method of using such piston construction in an engine which comprises provisions of a slightly increased gap between the piston and cylinder wall and formation of a transferred SFL coating from the piston to the cylinder wall resulting in two polished microsmooth mating coatings, each attractive to oil films.

Abstract translation: 用于供油气缸孔的低摩擦活塞结构，活塞裙部释放以限定用SFL（石墨，MoS2，BN和特殊的环氧树脂）涂覆的焊盘。 一种制造这种活塞结构的方法，包括在裙壁上设置粗糙度，SFL涂层在其上被喷涂在其上，并在凹凸的口部形成小口袋以附加地充当补油池。 在发动机中使用这种活塞结构的方法，其包括活塞和气缸壁之间略微增加的间隙和从活塞到气缸壁的转移的SFL涂层的形成，从而产生两个抛光的微平滑配合涂层，每个涂层对油 电影。