Mechanically sealed carbon graphite and ceramic friction pairs-

Mechanically sealed carbon graphite and ceramic friction pairs

　2017-06-10　　

Carbon graphite and ceramic friction pair of mechanical seal:

In Figure 2-42, the curve I' of the replacement cartridge Chesterton GDS mechanical seal is carbon graphite and ceramic friction pair, 2' is carbon graphite and tungsten carbide friction pair, the value after two years of use is correspondingly, into The test medium is water. The relationship between the wear speed of the two friction pairs and the PV value is obtained through experiments. The test time is 100h at each point and the wear amount (average value) is measured to calculate the wear rate and estimate the two-year life.

Since the lubricity of water is worse than other media, this curve is more reliable for other media. The wear rate is taken as the average wear rate of the two-year life. Therefore, the wear-bearing boss of the sealing surface (carbonstone sling ring) should not be less than 2mm. When drawing the test curve, after at least 4 tests, each 100h, the value characteristics after the test. The water temperature was maintained at 49 degrees Celsius during the test. Since the wear rate is inversely proportional to the temperature, it can be converted. According to the convention, if the PV value is at 27 degrees Celsius, its value is at 71 degrees Celsius.　　418.html,

Wear characteristics of mechanical seals 　　 Carbon graphite, ceramic and tungsten carbide friction pairs of mechanical seals