Izihlalo ze-Tungsten carbide, njengezona nxalenye zokutywina ezingundoqo kwiinkqubo zevalvu, zithatha indawo ebaluleke kakhulu kwindawo yoshishino ngenxa yeempawu zazo zokusebenza. Ngokuqulunqwa kwayo kwezinto ezizodwa, i-tungsten carbide, isihlalo sibonisa ukuqina okungaqhelekanga kunye nokuguquguquka, okwenza kube lukhetho lokuqala kwizicelo ezininzi zemizi-mveliso.
Okokuqala, izihlalo ze-tungsten carbide ziyaziwa ngobunzima bazo obuphezulu kunye nokumelana nokunxiba. Kwiindawo zoxinzelelo oluphezulu, i-high-velocity-velocity flow media environments, izinto zokuhlala eziqhelekileyo zihlala zinzima ukumelana nokukhukuliseka kwexesha elide kunye nokunxiba, ngelixa i-tungsten carbide inokuxhathisa ngokufanelekileyo ukukhukuliseka kwezi meko ezinzima ngenxa yeempawu zayo ezintle zomzimba. Oku kwenza izihlalo ze-carbide zibe zibalaseleyo malunga nokwandisa ubomi bevalvu kunye nokunciphisa iindleko zokulondoloza.
Okwesibini, ukuxhathisa kwe-corrosion kukwayinto ebalaseleyo yesihlalo se-carbide. Kwimichiza, i-petroleum kunye namanye amashishini, isiphakathi esihamba kumbhobho sihlala sinoburharha obuphezulu, nto leyo ebeka phambili iimfuno eziphezulu kakhulu zemathiriyeli yesitulo sevalvu. Ngokuzinza kwayo kweekhemikhali okugqwesileyo, i-tungsten carbide inokusebenza ngokuzinza ixesha elide kule ndawo inzima ngaphandle kokubola kunye nomonakalo, iqinisekisa ukhuseleko kunye nokuthembeka kwenkqubo yevalve.
Ukongeza, isihlalo se-carbide sinokuchasana kakuhle nokushisa okuphezulu. Kwiinkqubo ezininzi zoshishino, iqondo lokushisa eliphakathi linokunyuka kakhulu, elicela umngeni ukuchasana nokushisa kwezinto zokuhlala. Ngenqanaba eliphezulu lokunyibilika kunye nokuzinza okuphezulu kwe-thermal, i-carbide ene-cemented inokugcina ukusebenza okuzinzile kwindawo yokushisa okuphezulu, ngaphandle kokuguqulwa kunye nokuqhekeka, ukuqinisekisa ukusebenza okuqhelekileyo kwe-valve phantsi kweemeko zokusebenza eziphezulu.
Ixesha lokuposa: Sep-26-2024