公开(公告)号：US4799419A

公开(公告)日：1989-01-24

申请号：US549974

申请日：1983-11-09

Applicant: Bernd Krause

Inventor： Bernd Krause

IPC: C25D11/04 ,  B22F7/04 ,  B22F7/06 ,  B22F7/08 ,  C23C8/26 ,  C23C18/26 ,  C23C28/00 ,  C23C28/02 ,  F03C1/32 ,  F04B1/12 ,  F04B1/20 ,  F16J10/00 ,  F16J10/02 ,  F01B3/00

CPC classification number: F03C1/0652 ,  B22F7/08 ,  C23C28/021 ,  C23C28/023 ,  C23C8/26 ,  F05C2201/0475 ,  F05C2201/0478 ,  F05C2253/12

Abstract: A cylinder block for a multi-cylinder hydraulic or hydrostatic piston device is provided having a control layer comprising a sintered friction metal layer sintered onto the cylinder block under the simultaneous action of pressure and heat. The end surface of the cylinder block is first provided with an electrodeposited metal layer. The electrodeposited layer has a crystal lattice constant compatible with the sintered layer and the material of the cylinder block. The cylinder block is preferably made from steel or aluminum and the electrodeposited layer is preferably copper or nickel. After the friction metal layer, preferably bronze, is sintered onto the electrodeposited layer, the cylinder block is treated to improve the strength and wear characteristics of the cylinder block without injuring the sliding friction characteristics of the sintered friction metal layer. In the case of steel, the preferred treating process is gas nitriding, and in the case of aluminum or an aluminum alloy, the preferred treating process is anodizing.

Abstract translation: 提供了一种用于多气缸液压或静液压活塞装置的气缸体，其具有包括在同时作用的压力和热力下烧结到气缸体上的烧结摩擦金属层的控制层。 汽缸体的端面首先设有电沉积金属层。 电沉积层具有与烧结层和气缸体材料相容的晶格常数。 气缸体优选由钢或铝制成，电沉积层优选为铜或镍。 在摩擦金属层（优选青铜）烧结到电沉积层上之后，处理气缸体以改善气缸体的强度和磨损特性，而不会损伤烧结摩擦金属层的滑动摩擦特性。 在钢的情况下，优选的处理方法是气体氮化，在铝或铝合金的情况下，优选的处理方法是阳极氧化。