Two important factors affecting the performance of mechanical seal graphite composite pads-

Two important factors affecting the performance of mechanical seal graphite composite pads

　2016-12-20　　

①Processing factors. In terms of performance, mechanical seals require flexible graphite to have a suitable crystal structure and high purity. Its structure and corresponding mechanical properties are mainly affected by the quality of raw materials, chemical treatment, heat treatment, and production parameters of pressed graphite foil. The purity of flexible graphite has a greater impact on mechanical seal performance, mechanical properties and corrosion resistance.

②Using factors. Important factors affecting the sealing performance of graphite gaskets are the gasket stress during pre-tightening and operation. Properly high gasket stress will reduce leakage by several orders of magnitude. As the gasket stress is limited by the given flange strength and the bolts of the specified size, increasing the gasket stress can only be achieved by improving the structure of the gasket itself, that is, using metal reinforcement. There are many factors that affect the metal/graphite composite board, mainly: the material and type of the metal plate (foil, punching, wire mesh and stone® quality and manufacturing process (density, maximum impurity, bonding agent); gasket width, Diameter; roughness and width of flange sealing surface; service temperature, gasket stress and fluid properties, etc. 　　209.html,

New changes in the structure of mechanical seal products 　　 the superiority of metal graphite gaskets for mechanical seals