Kamar yadda ɗimbin masana'antu suka zama masu buƙatu tare da yanayin zafi mai girma, yanayin yanayi, matsanancin matsin lamba, da sauransu… madaidaicin hatimin elastomeric ba zai iya ba da tsawon rayuwar da ake buƙata don kamfanoni su ci gaba da yin gasa ba.PolytetrafluoroethylenePTFE) yana ba da damar yin aiki a mafi girma RPMs, mafi girma da ƙananan yanayin zafi, da kuma matsananciyar matsa lamba fiye da hatimin elastomeric.
Wannan shi ne saboda gaskiyar cewa PTFE wani abu ne mai banƙyama, wanda aka haɓaka don tsayayya da zafin jiki mai tsanani, yana da ƙananan ƙididdiga na gogayya, kuma lokacin da aka haɗe shi tare da zaɓaɓɓen filler, PTFE yana ba da halaye na musamman da kuma sauran kaddarorin inji waɗanda elastomer like ba zai iya ba.
PTFE ya fi PEEK juriya da sinadarai.Ya fi laushi kuma don haka yana ɗaukar ƙarancin matsawa don cimma hatimi, amma kuma yana rarrafe a ƙaramin zafin jiki fiye da PEEK.Har ila yau, yana da slim - samun ƙarancin juzu'i yana nufin sassa na iya zamewa da juna cikin sauƙi, yana haifar da ƙananan karfin juyi a aikace-aikacen hatimi da sauransu.
PEEK wani abu ne mai wuyar gaske, mai yawa, polymer mai ƙarfi.Yana da tsada.Hakanan yana da juriya ga yanayin zafi sosai.Kuna amfani da shi yawanci kawai inda PTFE ko ƙarfafa TFE ba zai kula da zafi ba.
Moltenmetal daidai ne, ba PEEK ko (m) PTFE ba ne masu elastomers, su polymers ne na thermoplastic.
PEEK yana da kyakkyawan ƙarfin injina, ƙarfin zafin jiki mai girma, dacewa da sinadarai, da juriya.PTFE yana da kyakkyawan ƙarfin ƙarancin / high zafin jiki, ƙananan kaddarorin gogayya, kuma ba shi da ƙima.Dukansu kayan za a iya ƙirƙira su ta hanyar mashin ko gyare-gyare.PEEK yawanci yafi tsada fiye da PTFE akan farashin albarkatun ƙasa $/lb, amma yawancin aikace-aikacen hatimi zasu buƙaci ƙaramin adadin abu idan ana amfani da gyare-gyare don ƙirƙira ɓangaren hatimi.Don aikace-aikacen hatimi mai girma, bambancin farashin albarkatun ƙasa bai kamata ya zama babban damuwa ba.Amma don babban girma, aikace-aikacen samfur mai rahusa Ina iya ganin inda zai iya zama matsala.
Don aikace-aikacen hatimi mai ƙarfi, inda matsi ba su da yawa, PTFE na iya zama zaɓi mai kyau tunda yana da kyakkyawan juzu'i da halaye masu dacewa.Wani abu mai kyau na musamman game da hatimin PTFE da ke gudana a kan saman karfe shine cewa bayan lokaci an canza wani Layer na PTFE zuwa saman karfe, wanda ke haifar da hulɗar PTFE-on-PTFE tare da raguwa da raguwa.Babban ƙayyadaddun ƙayyadaddun amfani da PTFE da ba a cika ba don rufewar matsin lamba shine cewa yana da yanayin sanyi-zuciya lokacin da aka fallasa matsi mai dorewa na dogon lokaci.
ETFE shine madaidaicin thermoplastic.FEP fluorinated ethylene propylene) kuma ma'auni ne mai tsauri, kodayake yana da laushi fiye da PFA ko PTFE- ba elastomer bane.Polytetrafluoroethylene-co-propylene (Aflas) wani elastomer ne, kamar yadda ake kira fluoroelastomer (sunan ciniki Viton- (FKM)) da kuma perfluoroelastomer kamar sunan kasuwanci Kalrez (FFKM).Ana iya amfani da duka a aikace-aikacen rufewa (packing a, gaskets, valve kujeru) amma kawai elastomers za a iya amfani da su a cikin hatimi mai kuzari kamar o zobe.O zobba za a iya lullube su da kayan da ba nalastomeric ba amma yana iya kuma yana shafar ikon su na rufe gas.
Lokacin aikawa: Fabrairu-27-2017