I-PTFE Seal

Ama-radial shaft seal anodebe oluvala uphawu lwe-PTFE olulodwa noma ngaphezulu aklanyelwe ukumelana nezindawo ezinolaka, amazinga okushisa aphezulu, izingcindezi eziphakeme kanye nokugijima okomile okungase kube khona izigxivizo zendabuko ze-radial shaft ezenziwe ngezinto ezivala izindebe ze-elastomeric ezingakwazi ukumelana nazo.Iningi lamakhompiyutha e-PTFE avunyelwe yi-FDA.

Izinzuzo eziyinhloko zezimpawu ze-PTFE zifaka:

Ukumelana namakhemikhali aphezuluUkumelana nesivinini esifika ku-30 ​​m/s (5 900 ft/min)Ibanga lokushisa elibanzi lokusebenza, -70 ukuya +250 °C (–95 kuya +480 °F)Limelana nezingcindezi ezifika ku-3,5 MPa (500 psi) Melana nokugijima okomile

Ukukhethwa kwezinto zokufaka uphawu ngokuvamile kudinga ukuvumelana phakathi kwezinzuzo nokungalungi.Kunamakhulu ezinto ezihlukile ze-PTFE ezinezinhlobonhlobo zokugcwalisa.Izithako ezijwayelekile zihlanganisa i-glass fiber, i-carbon, i-graphite, i-molybdenum disulphide, ama-oxide ensimbi nama-polymers ahlukahlukene.Ngayinye inezinto ezihlukene, ezifanele izinhlelo zokusebenza nezimo zesevisi ezahlukene.Okuvamile kuzo zonke izinto ezigcwalisiwe ze-PTFE ukumelana kwazo okuthuthukisiwe ukuguga nokuguqulwa.

I-PTFE engagcwalisiwe ihlinzeka, ezimweni eziningi, i-coefficient ephansi yokungqubuzana kunempahla ye-PTFE egcwele kanye nedigri ephansi kakhulu yokuguga ye-seal counterface.Kodwa-ke, udebe oluvalayo olwenziwe ngezinto ezingagcwalisiwe ze-PTFE linokumelana okulinganiselwe ukugqoka nokuguqulwa ngaphansi komthwalo.

Izinto ze-PTFE ezivame ukutuswa yi-SKF zifakwe kuhlu kuthebula.Ngokungeziwe kuzinhlanganisela ezisekelwe ku-PTFE, i-SKF iphinde inikeze ama-radial shaft seal kwamanye amapulasitiki ashintshiwe, amanye awo asohlwini lwethebula.

Ukukhetha into efanelekile yekesi lensimbi kanye ne(ama)O-ring nakho kubaluleke kakhulu ukuze kuzuzwe ukusebenza kokuvala okwanelisayo.Xhumana ne-SKF ukuze uthole ulwazi olwengeziwe.

Izinzuzo eziyinhloko zezimpawu ze-PTFE zifaka:

Ukumelana namakhemikhali aphezuluUkumelana nesivinini esifika ku-30 ​​m/s (5 900 ft/min)Ibanga lokushisa elibanzi lokusebenza, -70 ukuya +250 °C (–95 kuya +480 °F)Limelana nezingcindezi ezifika ku-3,5 MPa (500 psi) Melana nokugijima okomile

Ukukhethwa kwezinto zokufaka uphawu ngokuvamile kudinga ukuvumelana phakathi kwezinzuzo nokungalungi.Kunamakhulu ezinto ezihlukile ze-PTFE ezinezinhlobonhlobo zokugcwalisa.Izithako ezijwayelekile zihlanganisa i-glass fiber, i-carbon, i-graphite, i-molybdenum disulphide, ama-oxide ensimbi nama-polymers ahlukahlukene.Ngayinye inezinto ezihlukene, ezifanele izinhlelo zokusebenza nezimo zesevisi ezahlukene.Okuvamile kuzo zonke izinto ezigcwalisiwe ze-PTFE ukumelana kwazo okuthuthukisiwe ukuguga nokuguqulwa.

I-PTFE engagcwalisiwe ihlinzeka, ezimweni eziningi, i-coefficient ephansi yokungqubuzana kunempahla ye-PTFE egcwele kanye nedigri ephansi kakhulu yokuguga ye-seal counterface.Kodwa-ke, udebe oluvalayo olwenziwe ngezinto ezingagcwalisiwe ze-PTFE linokumelana okulinganiselwe ukugqoka nokuguqulwa ngaphansi komthwalo.

Izinto ze-PTFE ezivame ukutuswa yi-SKF zifakwe kuhlu kuthebula.Ngokungeziwe kuzinhlanganisela ezisekelwe ku-PTFE, i-SKF iphinde inikeze ama-radial shaft seal kwamanye amapulasitiki ashintshiwe, amanye awo asohlwini lwethebula.

Ukukhetha into efanelekile yekesi lensimbi kanye ne(ama)O-ring nakho kubaluleke kakhulu ukuze kuzuzwe ukusebenza kokuvala okwanelisayo.Xhumana ne-SKF ukuze uthole ulwazi olwengeziwe.