Wear Of Large Gears Of Ultrafine Mill

For the internal parts of the ultrafine mill, its life is limited, but in actual work, due to the influence of external conditions such as operation and climate, the degree of wear will be different. At this time, its life There will also be some changes that will affect the service life of the equipment and the efficiency of the work, so reducing the wear of its parts is an important measure to ensure the efficiency of the equipment and the service life.

In the interior of the ultrafine mill, the large gear is one of the important parts, its service life has an increased impact on the work of the equipment, and its wear state is different, only to understand its wear state, can be better To solve the degree of wear, here is to analyze the two states of the large gear wear.

When the ultrafine mill is working, the tooth surface has two operating states in the process of meshing transmission, namely rolling and sliding. When the gear running speed changes rapidly, if the lubrication is not in place or the contact surface pressure is large, The phenomenon of metal contact, mutual friction and thus the grinding and wear of the gear, there are two cases:

1. There are protrusions and depressions on the friction surface. The two parts are fitted to each other during operation. During the relative movement, the convex part may be elastically deformed, or may be scraped to cause the falling off problem, thereby causing fatigue erosion;

2. When the ultrafine mill is working, if the contact pressure of the gear is relatively large, solid phase welding will occur, and the wear generated in the process can be expressed as: the friction surface is slipped, the sticking point is pulled apart, and then again Adhesive and torn, resulting in damage to the friction surface, while further aggravating gear wear.

In addition to the wear mentioned above, when the ultrafine mill is working, the hard particles will also cause a certain degree of surface scratching and surface material peeling during the friction process. This phenomenon is called abrasive wear. The wear mechanism can be attributed to micro-cutting, extrusion spalling, and fatigue damage.

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