Njengoba izimboni eziningi zase zidingeka kakhulu ngenxa yamazinga okushisa aphakeme, izimo ze-caustic, izingcindezi eziphakeme, njll… i-elastomeric seal evamile yayingasakwazi ukunikeza isikhathi sokuphila esidingekayo ukuze izinkampani ziqhubeke zincintisana.I-Polytetrafluoroethylene (I-PTFE) inikeza ithuba lokugijima ngama-RPM aphezulu, amazinga okushisa aphezulu naphansi, kanye nezingcindezi eziphakeme kakhulu kune-elastomeric seal.
Lokhu kungenxa yokuthi i-PTFE iyinto engasebenzi kahle, ethuthukiswe ukumelana nezinga lokushisa eliqinile, ine-coefficient ephansi yokungqubuzana, futhi uma ihlanganiswa nezihlungi ezikhethiwe, i-PTFE inikeza izici zokugqoka ezihlukile nezinye izici zemishini i-elastomer seal engakwazi ngayo.
I-PTFE imelana kakhulu namakhemikhali kune-PEEK.Ithambile KAKHULU ngakho-ke ithatha amandla amancane okubamba ukuze kufinyelelwe uphawu, kodwa iphinde ingene ezingeni lokushisa eliphansi kakhulu kune-PEEK.Kuyashelela futhi- ukuba ne-coefficient ephansi yokungqubuzana kusho ukuthi izingxenye zingashelela zidlule ezinye kalula, okuholela ku-torque ephansi ekujikelezeni kwezinhlelo zokuvala njll.
I-PEEK iyi-polymer eqinile kakhulu, eminyene, eqinile.Kuyabiza.Iphinde imelane namazinga okushisa aphezulu.Uyisebenzisa ngokuvamile kuphela lapho i-PTFE noma i-TFE eqinisiwe ingeke ibambe ukushisa.
I-Moltenmetal ilungile, futhi i-PEEK noma (eqinile) i-PTFE ayiwona ama-elastomers, angama-polymers we-thermoplastic.
I-PEEK inamandla amahle kakhulu okusebenza, amandla okushisa aphezulu, ukuhambisana kwamakhemikhali, nokumelana nokugqoka.I-PTFE inekhono elihle kakhulu lokushisa eliphansi/eliphezulu, izakhiwo zokungqubuzana okuphansi, futhi ayisebenzi ngamakhemikhali.Zombili izinto zokwakha zingenziwa ngomshini noma ngokubumba.I-PEEK ivamise ukubiza kakhulu kune-PTFE ngesisekelo sezindleko zempahla eluhlaza engu-$/lb, kodwa izinhlelo zokusebenza eziningi zokuvala zingadinga amanani aphansi ezinto ezibonakalayo uma ukubumba kusetshenziselwa ukwakha isici sophawu.Kuzinhlelo zokusebenza ezisebenza kakhulu zophawu umehluko wezindleko zempahla eluhlaza akufanele ube yinto ekhathaza kakhulu.Kodwa ngevolumu ephezulu, isicelo somkhiqizo oshibhile ngingabona lapho kungaba yinkinga.
Ngohlelo lokusebenza lophawu oluguquguqukayo, lapho izingcindezi zingekho phezulu kakhulu, i-PTFE ingaba ukukhetha okuhle njengoba inezici ezinhle kakhulu zokungqubuzana nokuvumelana.Enye into enhle kakhulu ngophawu lwe-PTFE olusebenza endaweni yensimbi ukuthi ngokuhamba kwesikhathi ungqimba lwe-PTFE ludluliselwa endaweni yensimbi, okuholela ekuxhumaneni kwe-PTFE-on-PTFE ngokungqubuzana nokuvuza okuphansi kakhulu.Umkhawulo owodwa omkhulu wokusebenzisa i-PTFE engagcwalisiwe yokuvalwa kwengcindezi ukuthi inomkhuba wokugeleza okubandayo lapho uvezwa ingcindezi eqhubekayo phakathi nesikhathi eside.
I-ETFE iyi-thermoplastic eqinile.I-FEP fluorinated ethylene propylene) futhi iyi-thermoplastic eqinile, nakuba ithambile kune-PFA noma i-PTFE- akuyona i-elastomer.I-Polytetrafluoroethylene-co-propylene (Aflas) iyi-elastomer, njenge-fluoroelastomer ejwayelekile (igama lokuhweba elithi Viton- (FKM)) kanye nama-perfluoroelastomers afana negama lokuhweba elithi Kalrez (FFKM).Konke kungasetshenziswa ekuvaleni (ukupakisha u-a, ama-gaskets, izihlalo zamavalvu) kodwa ama-elastomer kuphela angasetshenziswa ezimpawu zokuzinika amandla ezifana namasongo.Amaringi e-O angambozwa ngezinto ze-nonelastomeric kodwa angakwazi futhi aphazamise ikhono lawo lokuvala igesi.
Isikhathi sokuthumela: Feb-27-2017