Friction-reducing coating compositions and coated machine part
    312.
    发明授权
    Friction-reducing coating compositions and coated machine part 失效
    减摩涂料组合物和涂布机部件

    公开(公告)号:US4756841A

    公开(公告)日:1988-07-12

    申请号:US856372

    申请日:1986-04-28

    Abstract: Friction-reducing coating compositions and coated machine parts having a wearing surface provided with coatings of same. In one embodiment, the coating composition includes from 10 to 25 weight % molybdenum metal; from 55 to 70 weight % nickel alloy; and from 5 to 25 weight % chromium carbide Cr.sub.3 C.sub.2. In a second embodiment, the coating composition includes from 25 to 45 weight % molybdenum metal; from 45 to 60 weight % nickel alloy; and from 5 to 25 weight % of a hard substance selected from chromium metal, chromium carbide Cr.sub.23 C.sub.6 and molybdenum carbide Mo.sub.2 C. Preferably the nickel alloys contain from 73 to 95 weight % nickel and have a melting point below that of nickel metal. Preferably the friction-reducing coating is applied to a wearing surface by plasma flame spraying. These coatings impart excellent wear resistance to the wearing surface, while lowering wear of counter-running faces.

    Abstract translation: 减摩擦涂料组合物和具有设置有其涂层的磨损表面的涂覆机器部件。 在一个实施方案中,涂料组合物包含10至25重量%的钼金属; 55至70重量%的镍合金; 和5至25重量%的碳化铬Cr 3 C 2。 在第二个实施方案中,涂料组合物包含25至45重量%的钼金属; 45〜60重量%的镍合金; 和5〜25重量%的选自铬金属,碳化铬Cr 23 C 6和碳化钼Mo 2 C的硬质物质。 优选地,镍合金含有73至95重量%的镍,其熔点低于镍金属的熔点。 优选地,通过等离子体火焰喷涂将摩擦减小涂层施加到磨损表面。 这些涂层赋予磨损表面优异的耐磨性,同时降低了反面磨损。

    Micro-cryogenic system with pseudo two stage cold finger, stationary
regenerative material, and pre-cooling of the working fluid
    313.
    发明授权
    Micro-cryogenic system with pseudo two stage cold finger, stationary regenerative material, and pre-cooling of the working fluid 失效
    微型低温系统,具有假二级冷指,静态再生材料,以及预冷工作流体

    公开(公告)号:US4425764A

    公开(公告)日:1984-01-17

    申请号:US358620

    申请日:1982-03-16

    Applicant: Calvin K. Lam

    Inventor: Calvin K. Lam

    CPC classification number: F25B9/14 F05C2201/0466 F25B2309/003

    Abstract: A miniature cryogenic system preferably operating in a manner similar to a split Stirling cycle utilizes a cold finger with a solid, low weight displacer and a stationary regenerative material external to the displacer. The regenerative material preferably surrounds the displacer and extends from a fluid inlet to a cooled end plate of a housing. The displacer has a central channel that receives an auxiliary displacer that carries a regenerative material in an internal cavity. A second fluid inlet located at the end of the housing opposite the cooled end communicates with the regenerative material held in the auxiliary displacer. The main and auxiliary displacers preferably have associated heat exchangers at their cooling ends and the cooling end of the auxiliary displacer is located to pre-cool the fluid passing from the first inlet to the cooled end plate.

    Abstract translation: 优选以类似于分割斯特林循环的方式操作的微型低温系统利用冷指与固体,低重量置换器和置换器外部的固定再生材料。 再生材料优选地围绕置换器并且从流体入口延伸到壳体的冷却端板。 置换器具有中心通道,其接收在内腔中承载再生材料的辅助置换器。 位于壳体的与冷却端相对的端部的第二流体入口与保持在辅助置换器中的再生材料连通。 主要和辅助置换器优选地在其冷却端处具有相关联的热交换器,并且辅助置换器的冷却端被定位成将从第一入口通过的流体预冷却到冷却的端板。

    Swash-plate-type compressor for air-conditioning vehicles
    314.
    发明授权
    Swash-plate-type compressor for air-conditioning vehicles 失效
    用于空调车辆的斜盘式压缩机

    公开(公告)号:US4244679A

    公开(公告)日:1981-01-13

    申请号:US960775

    申请日:1978-11-15

    Abstract: Shoes for operatively connecting a swash-plate with the compression pistons of a swash-plate type compressor are made from a novel Cu-based alloy. Improved shoes are characterized by a combination of high heat conductivity and excellent wear resistance properties particularly when subjected to a lubricating condition so severe that no lubricating oil is supplied to the surface of the shoes at the initial period of the compressor operation. Phosphorus and elements of C group (Pb and/or Sn), as well as elements of A group (Mn and Si) and/or B group (the IVb and VIb groups of the periodic table), are added in predetermined amounts to the Cu-based alloy, so that the properties mentioned above are simultaneously obtained. The compressor according to the present invention can be reliably employed, without the occurrence of seizure over a long operational period for air-conditioning vehicles, in which the sliding condition of the shoes is drastically varied with the rotation of the engine.

    Abstract translation: 用于将旋转斜盘与斜盘式压缩机的压缩活塞可操作地连接的鞋由新型的Cu基合金制成。 改进的鞋的特征在于具有高导热性和优异的耐磨性,特别是当经受如此严重的润滑条件时,在压缩机操作的初始阶段不向鞋的表面供应润滑油。 将磷组分(Pb和/或Sn)的元素以及A组(Mn和Si)和/或B组(周期表的IVb和VIb基团)的元素以预定量加入到 Cu基合金,从而同时获得上述性质。 可以可靠地使用根据本发明的压缩机,而不会在发动机的旋转中鞋子的滑动状态急剧变化的空调车辆的长时间运行期间发生缉获。

    Double acting piston pump for cryogenic medium
    315.
    发明授权
    Double acting piston pump for cryogenic medium 失效
    双作用活塞泵用于低温介质

    公开(公告)号:US3990816A

    公开(公告)日:1976-11-09

    申请号:US304902

    申请日:1972-11-09

    Abstract: A double acting piston pump for cryogenic mediums is disclosed. The pump includes a vertically positioned cylinder having a base portion and a cover portion, and inlet valves are disposed in the cover portion and the base portion for admitting the cryogenic medium into the cylinder and for providing a pressure component of approximately zero against the direction of flow of the cryogenic medium. Outlet valves are disposed in the cover portion and the base portion for discharging the cryogenic medium from the cylinder. A piston is slideably mounted in the cylinder and a drive rod connected to the piston extends through either the cover portion or the base portion of the cylinder. A drive arrangement engages the drive rod for actuating the piston. A housing is also provided which has a portion defining the cylinder. The drive rod and the drive arrangement are mounted in the remaining portion of the housing, whereby the housing is common to the piston, the drive rod and the drive arrangement. The pump is suitable for both liquid and gaseous mediums and generates practically no frictional forces.

    Abstract translation: 公开了一种用于低温介质的双作用活塞泵。 泵包括具有基部和盖部分的垂直定位的气缸,并且入口阀设置在盖部分和基部中,用于将低温介质引入气缸中,并且用于将压力分量相对于 低温介质的流动。 出口阀设置在盖部分和基部中,用于将低温介质从气缸排出。 活塞可滑动地安装在气缸中,连接到活塞的驱动杆延伸穿过气缸的盖部分或底座部分。 驱动装置接合驱动杆以致动活塞。 还提供了一个壳体,其具有限定气缸的部分。 驱动杆和驱动装置安装在壳体的剩余部分中,由此壳体与活塞,驱动杆和驱动装置共用。 泵适用于液体和气体介质,几乎不产生摩擦力。

    Steel cylinder barrel having bonded bronze-iron liners
    317.
    发明授权
    Steel cylinder barrel having bonded bronze-iron liners 失效
    具有粘结的钢铁衬板的钢瓶筒

    公开(公告)号:US3709108A

    公开(公告)日:1973-01-09

    申请号:US3709108D

    申请日:1970-11-27

    Inventor: ALGER M DUNN N

    Abstract: The disclosure concerns cylinder barrels for piston pumps and motors which have lined cylinder bores. Each liner comprises a matrix of sintered, powdered iron which is impregnated with bronze, and which is metallurgically and mechanically bonded to the steel barrel. The liners are formed from porous, sintered iron sleeves which are placed in the bores in contact with bronze slugs. The assembly is heated in a non-oxidizing atmosphere to a temperature between 1,900*F and 2,000*F to melt the bronze and cause it to infiltrate the sintered preform and bond to the steel. Thereafter, the assembly is cooled in the non-oxidizing atmosphere to solidify the bronze, followed by air cooling to room temperature. Finally, the finished cylinder bores are machined in the bonded bronze-iron sleeves.

    Abstract translation: 该公开涉及具有内衬缸孔的活塞泵和电动机的气缸筒。 每个衬垫包括用青铜浸渍的烧结的粉末铁的基质,并且其被冶金和机械地结合到钢桶上。 内衬由多孔烧结铁套筒形成,该套筒放置在与青铜塞接触的孔中。 将该组件在非氧化性气氛中加热至1900至200°F之间的温度,以使青铜熔化并使其渗透到烧结的预制件中并结合到钢。 此后,将组件在非氧化性气氛中冷却,使青铜固化,然后空气冷却至室温。 最后,成品缸孔在粘结青铜铁套管中加工。

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