Wear characteristics of high-speed rotary joints

The materials used to manufacture high-speed rotary joints are quite special. Firstly, they must be resistant to high temperatures and friction, as high-speed rotation wears out quickly and friction generates heat. This is also the main reason for the high price of joints. When rotary joints are purchased, they cannot be installed and used immediately. It is best to use a high-speed tester to test whether they meet the required speed, friction, and high temperature range for work, and to test the sealing performance.

No matter what type of rotary joint is used, wear will occur. For example, when wearing shoes, you will find that the sole of the shoe is worn after a period of time, but the degree varies in different parts. Joint wear is the mechanical action between solid and other components or media, causing the surface to be damaged. When high-speed rotary joints wear, the destructive effect is limited to a small range of the material surface, gradually detaching from the friction surface in the form of abrasive particles. The amount of joint wear is usually judged by the decrease in the size of the object along the vertical direction of the friction surface; The wear of the rotary joint occurs on the surface of the friction joint where the forces between the two friction bodies are located, and the sum of these friction nodes combines the actual contact area between the two objects; In a fixed wear state, the actual contact area remains constant. When the slip of one object to another reaches the average diameter of the contact spot, the existing friction nodes are destroyed, and the same number of new friction nodes are generated. Any point on the surface of the friction nodes is subjected to complete load cycles, and sliding with the average diameter of the contact spot can be regarded as an interacting action element.
The medium of high-speed rotary joints is generally water, hot water, etc., and they work at temperatures below 180 degrees Celsius. Due to their obvious characteristics and parameters, they are widely used in almost all processing and manufacturing industries, including metallurgy, machine tools, rubber, textile, and petroleum industries. Only by comprehensively evaluating the cost-effectiveness of high-speed rotary joints can their benefits be maximized.