Hydraulic wear is often the following:
1, friction and wear: During the operation of hydraulic parts, hard pollution particles equivalent to the size of the clearance of the moving pair are the most dangerous. At this time, the movement between the hydraulic parts and the hard pollution particles is just like the principle of the grinder. They continuously cut the material on the surface of the moving pair, which increases the clearance of the moving pair of the hydraulic part, resulting in increased leakage. At the same time, it also produces more metal particles that are cut down, and a vicious cycle.
2, erosion wear: when the hydraulic medium flows at high speed, it drives the pollution particles to impact the edge and surface of the part, just like the shot peening process, so that the surface material of the part falls off, resulting in changes in the shape and clearance of the part. At the same time, more metal particles are produced, resulting in a vicious cycle.
3, adhesive wear: When the heavy speed or hydraulic medium viscosity is low, it will reduce the thickness of the oil film between the moving pair, so that the metal surface is in direct contact with each other, and some surface bumps will be bonded or inlaid together. When the hydraulic part is running, these bonding or Mosaic points will be cut off, forming new metal particles and mixed into the hydraulic medium.
