What is the wear mechanism of castings during use?

During the service of a heavy-duty truck, its castings may be exposed to a variety of wear mechanisms. These mechanisms not only affect the performance and life of castings, but are also directly related to the safety and reliability of trucks. Surface wear is the most common and direct form, often caused by contact and friction with other surfaces. When the truck is running, the castings come into contact with other components such as tires, the ground, and other connecting parts. The friction between these surfaces will cause the surface of the castings to gradually wear away, affecting its service life.

Secondly, fatigue wear is an inevitable form of wear during long-term use. Long-term operation and frequent loading and vibration will cause micro cracks and stress concentration inside the casting, eventually causing fatigue damage and seriously affecting the reliability of the casting.

In addition, corrosive wear is another common form of wear. Especially when trucks often drive in humid, corrosive or harsh chemical media environments, the surface of the casting is easily corroded, resulting in wear. In high temperature or high pressure environments, viscous wear will occur when the casting surface comes into contact with viscous media such as lubricating oil and grease. Particles or liquids in the viscous medium will adhere to the surface of the casting, aggravating the degree of wear.