在一定的摩擦条件下，磨损过程分为三个阶段 ，即磨合、稳定磨损、和剧烈磨

Under certain friction conditions, the wear process is divided into three stages, namely running-in, stable wear, and severe wear. <br>Running-in is the unstable stage of wear. It accounts for a small proportion of the entire working time and has a high wear rate. But it decreases as working hours increase. <br>The stable wear phase has the longest time. It is characterized by slower wear and stable wear rate. <br>The severe wear stage is a sharp increase in the wear rate. For the roll of the plate bending machine, it means that the stress concentration is serious, which causes the roll to be easily broken. <br>The running-in period of trial operation <br>For the plate bending machine, the idling running-in of the machine is significant to the efficiency and service life of the machine. <br>Running-in can make the machine surface form an elastic contact condition. So as to provide a minimum wear rate and stable friction value. <br>The important law of running-in is stable roughness. <br>This has nothing to do with the original roughness, but depends on the wear conditions. <br>This is not a medium to long-term run-in for the work of the machine. <br>The running-in result of the bending machine and the plate is affected by factors such as material, load, speed, mechanical and physical properties. <br>But as long as the pressure does not exceed the critical value, it is better to maintain elastic contact.

Under certain frictional conditions, the wear process is divided into three stages, namely, run-in, stable wear, and severe wear. <br>Run-in is an unstable phase of wear. It accounts for a small proportion of the entire working hours and has a high wear rate. But it decreases with the longer working hours.<br>The longest period of stable wear. It is characterized by slower wear and stable wear rate.<br>The period of severe wear is a sharp increase in wear rates. For roller rollers, this means that the stress concentration is severe, which makes the rollers very easy to break.<br>The run-in period of the trial run.<br>For the roll board machine, the machine's air-turning is very meaningful to the efficiency and service life of the machine.<br>The run-in allows the surface of the machine to form elastic contact conditions. This provides a minimum moloss rate and a stable friction value.<br>The important rule of run-in is the steady roughness.<br>This is not related to the original roughness, but depends on the wear conditions.<br>This is not a long-term run-in for the work of the machine.<br>The grinding results of the coil machine and the plate are influenced by the factors such as material, load, speed, mechanical physical performance and so on.<br>But as long as the pressure does not exceed the threshold, maintaining elastic contact is excellent.

Under certain friction conditions, the wear process can be divided into three stages: running in, stable wear and severe wear. A kind of<br>Running in is an unstable stage of wear. It takes up a small proportion in the whole working time and has a high wear rate. But it decreases with working hours.<br>The time of stable wear stage is the longest. It is characterized by slow wear and stable wear rate.<br>In the severe wear stage, the wear rate increases sharply. For the roller of plate bending machine, it means that the stress concentration is serious, which leads to the roller fracture easily.<br>Running in period of trial operation<br>For the plate bending machine, the idling running in of the machine is of great significance to the efficiency and service life of the machine.<br>Running in can form elastic contact conditions on the machine surface. Thus, it can provide a minimum friction rate and a stable friction value.<br>The important rule of running in is stable roughness.<br>This is independent of the original roughness, but depends on the wear conditions.<br>This is not a kind of medium and long-term running in of the machine.<br>The running in results of rolling machine and plate are affected by material, load, speed, mechanical and physical properties.<br>However, as long as the pressure does not exceed the critical value, it is better to keep elastic contact.<br>