メカニカルシールにおけるセラミックしゅう動リングの熱衝撃破壊
1992 年 58 巻 548 号 p. 1197-1202
詳細
1992 年 58 巻 548 号 p. 1197-1202
Thermocracking is one of the main failure modes in mechanical seals. In this paper, as the first step in establishing the mechanism of thermocracking, thermal shock tests are carried out by rubbing carbon graphite against alumina. It is shown that the states of cracks produced by thermal shock tests can be explained using thermal stresses calculated by FEM analysis. As a result, it is predicted that cracks in mechanical seals are caused by the action of high tensile circumferential thermal stress.
