Causes of wear and tear of auto parts

The wear of auto parts is accompanied by friction, and the movement phenomenon of resistance on the contact surface is called friction. Under the action of friction, the surface metal molecules of auto parts will gradually fall off, thereby changing the surface size, geometry, and material properties of auto parts. In the relative movement, due to friction, the destruction process of the surface and surface of auto parts is called the wear process. Natural friction is the main reason for changes in the technical conditions of automobiles. The natural wear of auto parts is divided into the following two types :

1. Mechanical wear.
In the production process of auto parts, no matter how precise the processing is, the surface has microscopic unevenness. When two matching auto parts move relative to each other, they will wear out due to friction. This is an objective existence. In order to reduce this kind of wear, lubrication is required. , So that the direct friction of the surface of the auto parts becomes the liquid friction of the lubricating oil. However, due to changes in vehicle operation and working conditions, good lubrication conditions may be destroyed. Direct contact on the surface of auto parts causes solid friction, and the uneven parts of the surface of auto parts bridge pressure, embedding people, cutting, deformation, fatigue, etc. Changes in normal size, shape, or performance.

2. Corrosion and wear.
In the friction process of high-quality auto parts, the metal reacts with the surrounding medium at the same time, resulting in friction loss, which is called corrosion wear. From the perspective of the role of metal auto parts and external media in the corrosion process, corrosion wear can be divided into chemical corrosion and electrochemical corrosion.