平定高溫高壓工況下,機械密封使用需要注意什么?
機械密封(feng)(feng)工(gong)作壓(ya)(ya)力超(chao)過(guo)4~5MPa即屬于高壓(ya)(ya)密封(feng)(feng)范圍。在(zai)高壓(ya)(ya)條件下,由于密封(feng)(feng)端面比壓(ya)(ya)值過(guo)大,引起(qi)端面發熱,從而破壞液膜(mo)的形成(cheng)(cheng),造成(cheng)(cheng)異常(chang)磨損。高壓(ya)(ya)還可(ke)能(neng)使(shi)摩擦副產生...