Method for determining amount of wear, method for manufacturing sliding contact, and sliding contact

Abstract

The invention discloses a method for determining abrasion amount of a solid lubricating coating for a sliding contact component, and the sliding contact component and a manufacturing method of the sliding contact component. The method for determining the abrasion amount comprises the following steps of: on the basis of a load, the geometrical shape of a contact part and material parameters, computing distribution of contact pressure between the sliding contact component and a matched body; and on the basis of the distribution of the contact pressure, the relative movement velocity of the contact part and an abrasion coefficient of the solid lubricating coating, determining the time-related abrasion amount of the solid lubricating coating. The manufacturing method comprises the following steps of: after determining the time-related abrasion amount of the solid lubricating coating, acquiring initial outline parameters of the solid lubricating coating on the basis of the abrasion amount and the service life of the sliding contact component; and on the basis of the initial outline parameters, forming the solid lubricating coating on a base body of the sliding contact component. The solid lubricating coating on the sliding contact component can be quickly determined and has the precise size and surface outline; the reliability of the sliding contact component is improved; and the service life of the sliding contact component is prolonged.

Description

technical field [0001] The invention relates to a method for determining the wear amount of a solid lubricating coating on a sliding contact piece, a method for manufacturing a sliding contact piece with a solid lubricating coating, and a sliding contact piece manufactured in this way. Background technique [0002] Solid lubricating coatings have been used in many products because they provide good lubrication for the mechanical contact between parts. However, since the wear behavior of coatings varies under different conditions, the wear life of coatings is critical for practical applications. Extensive experimentation is usually required to determine the proper coating to meet the lifetime needs of the actual application. [0003] The invention relates to the prediction of the wear life of the solid lubricating coating and the prediction of the wear profile. In this regard, two studies are known. In the literature [1] (Jiaren Jiang, R.D.Arnell. On the running-in behavio...

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Problems solved by technology

In the literature [1] (Jiaren Jiang, R.D.Arnell. On the running-in behavior of diamond-like carbon coatings under the ball-on-diskcontact geometry, Wear, Vol.217, 1998, p.190-199), diamond-like The wear of the coating is simulated by Archard theory, but the accuracy is low due to the use of the Hertz contact analysis method to calculate the contact pressure of the layered material

In the literature [2] (N.L.McCook et al. Cumulative damage modeling of solid lubricant coatings that experience wear and interfacial fatigue. Wear, Vol.262, 2007, p.1490-1495), an incremental model was established to predict solid lubricant Coating wear and interface fatigue cumulative failure, but calculation time is very long due to use of finite element method

[0004] Existing wear prediction methods for solid lubricating coatings are either time consuming or less accurate due to inappropriate assumptions

Furthermore, none of them can predict with reasonable time and accuracy the evolution of the coating wear profile, which is important when applying coatings to certain precision-fit parts, where increased gaps due to coating wear can cause parts to Coordination failure

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