1. The effect of load on the amount of wear
Load is the most important factor in the wear process, and its fundamental principle is to change the friction between objects, thereby affecting the amount of wear. Most objects may appear smooth to the naked eye, but under magnification of dozens or hundreds of times, the surfaces of all objects are rough, irregular, with protrusions and depressions. Therefore, when any two objects are in contact, the real contact is where the surfaces of the two objects are relatively convex, not the actual area. The contact surface is always smaller than the actual area, and wear is also caused by the relative friction of the west starting point of the contact surface of the two objects. of. Therefore, the number and size of the raised points on the contact surface of the two objects directly affect the magnitude of the frictional force. When the load is applied and the wear begins, the contact points on the friction pair begin to rub. As the wear time increases or the load increases, the surface of the object will become rougher, and more contact points will appear, increasing surface roughness, that is, The coefficient of friction increases, which in turn increases the amount of wear. In addition, the deformation of the material also has a great influence on the friction. If elastic deformation occurs, the larger the load, the larger the friction coefficient. If plastic deformation occurs, the two are irrelevant.