公开(公告)号：US20020130003A1

公开(公告)日：2002-09-19

申请号：US09810323

申请日：2001-03-16

Applicant: Delphi Technologies, Inc.

Inventor： IIya Lisenker ,  Patrick Neil Hopkins ,  William Charles Kruckemeyer

IPC: F16F009/53

CPC classification number: F16F9/535 ,  F16F2226/02

Abstract: A damper body for a magnetorheological (MR) damper and associated methods of forming the damper body. The damper body is formed of a base material, such as a steel, and is coated with an abrasion-resistant layer comprising chromium. The layer of chromium provides a sliding wear surface for sliding contact with a reciprocating piston. To avoid high-stress abrasive wear over the expected service life of the magnetorheological damper, the layer of chromium has a minimum thickness greater than or equal to a minimum thickness of about 8 nullm. In other embodiments, be fore applying the abrasion-resistant layer of chromium, the damper body is coated with a layer of a hard coating material having a hardness greater than the hardness of the base material. The effective hardness of the damper body is a composite of the respective hardnesses of the base material comprising the damper body and the layer of hard coating material. The thickness of abrasion-resistant layer of chromium is chosen in direct relation to the effective hardness.

Abstract translation: 一种用于磁流变（MR）阻尼器的阻尼器本体和形成阻尼体的相关方法。 阻尼体由诸如钢的基材形成，并且涂覆有包含铬的耐磨层。 铬层提供滑动磨损表面，用于与往复活塞滑动接触。 为了避免在磁流变阻尼器的预期使用寿命之前的高应力磨损磨损，铬层具有大于或等于约8μm的最小厚度的最小厚度。 在其他实施例中，在施加铬的耐磨层之前，阻尼体涂覆有硬度大于基材硬度的硬涂层材料层。 阻尼体的有效硬度是包括阻尼体的基材和硬质涂层材料的硬度的复合。 铬的耐磨层的厚度与有效硬度直接相关。