About mechanical seal wear
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I was recently doing a mechanical seal test. I used a static ring made of silicon carbide and carbide, and a moving ring made of graphite. Strangely enough, the moving ring was worn, but no traces were visible. However, it is easy to see signs of wear and tear on the static ring, as well as subtle grooves. ； According to common sense, the moving ring graphite should be relatively soft in wear. How come the static ring is obviously worn? Please share your opinion!
Generally, the material is soft and easy to wear. What’s wrong with the material?
Yes, in theory, soft ones are easy to wear, but in fact, both dynamic and static rings are worn. The question is how can grooves appear in hard static rings. The reason is unknown!
In fact, they are all worn. The soft ones are easy to wear and the groove marks are worn away, while the hard static rings are not easy to wear, leaving groove marks. I think that's it.
In fact, under high-speed operation, the soft material acts as a grinding wheel.