Cov khoom siv roj hmab twg yog qhov zoo tshaj plaws rau HPHT zoo ib puag ncig?
Nyob rau hauv qhov kub thiab txias, qhov kub siab zoo ib puag ncig, cov ntaub ntawv tsim nyog tshaj plaws rau cov roj hmab foob yog fluoroelastomer (FKM / Viton®) thiab polytetrafluoroethylene (PTFE). Nov yog cov yam ntxwv ntawm ob yam khoom no:
Fluoroelastomer (FKM / Viton®)
Fluoroelastomers muaj kev tiv thaiv zoo rau qhov kub thiab txias thiab tuaj yeem tiv taus kev ua haujlwm kub txog 250 degree.
Cov tshuaj tiv thaiv zoo heev rau cov roj, cov kuab tshuaj, roj, muaj zog acids, thiab cov hauv paus.
Nws yog dav siv nyob rau hauv petrochemical, tsheb cav, aerospace thiab kws tshuaj, thiab lwm yam high-temperature thiab tshuaj nruab nrab complex zaus.
Txawm li cas los xij, ntawm qhov kub thiab txias, fluoroelastomers tsis tshua muaj elasticity thiab tuaj yeem ua rau embrittle.
Polytetrafluoroethylene (PTFE)
PTFE yog ib qho ntawm cov khoom siv tshuaj tiv thaiv zoo tshaj plaws thiab tuaj yeem tiv taus yuav luag txhua yam tshuaj lom neeg, suav nrog cov kua qaub, alkalis, thiab cov kuab tshuaj muaj zog.
Nws muaj kev tiv thaiv zoo rau qhov kub siab txog li 260 degree thiab qhov sib txhuam tsis tshua muaj kev sib txhuam, ua rau nws tsim nyog siv rau hauv daim ntawv thov sealing dynamic.
PTFE yog siv dav hauv cov ntsaws ruaj ruaj hauv cov cuab yeej siv tshuaj, cov khoom siv roj thiab roj, thiab cov cuab yeej siv tshuaj, tshwj xeeb tshaj yog thaum raug cov xov xwm corrosive heev.
Txawm li cas los xij, PTFE cov ntaub ntawv tsis tshua muaj elastic thiab yog li feem ntau siv nrog rau lwm cov elastomers los txhim kho kev sib khi.
Ob cov ntaub ntawv no zoo tagnrho rau cov roj hmab ntsaws ruaj ruaj nyob rau hauv high-temperature thiab high-pressure zoo ib puag ncig vim lawv zoo heev tiv taus kub, tshuaj corrosion, thiab zoo sealing zog.
