PTFE O-Rings, Sanya O-Zobba da Amfani

PTFE ko polymer O-Rings suna da kyakkyawan juriya ga kusan dukkanin sunadarai ciki har da acid, tushe, mai, tururi…….

Gabatarwar PTFE O-Rings

Rashin rashin daidaituwa na PTFE zuwa kusan dukkanin gas da ruwaye tsakanin -320 °F da +450 °F shine ɗayan mafi kyawun kaddarorin sa lokacin amfani da tsarin rufe O-Ring.Za a ƙasƙantar da mutuncin PTFE ne kawai idan ya zo cikin hulɗa da narkakkar ƙarafa na alkaline da wasu mahaɗan halogenated.PTFE shine kayan zaɓin don tabbatar da dacewa da hatimin O-Ring tare da matsakaicin hatimi ko don rufewa akan kewayon zafin jiki mai faɗi.

Nasihun ƙira don PTFE O-Rings

Daidaitaccen aikin O-Ring na roba kamar Per MIL-G-5514 yawanci ana ba da shawarar idan akwai nau'ikan nau'ikan shigarwa don aikace-aikace masu ƙarfi.Hakanan ana iya amfani da TG O-Rings don takamaiman aikace-aikace.Tun da bambance-bambancen jiki na PTFE da mahadi na elastomeric suna da girma sosai, ƙirar da ke gaba da hanyoyin shigarwa za su ba da mafi kyawun sakamako mai yuwuwar hatimi dangane da aiki da rayuwar hatimi:

• Ba kamar roba O-Rings ba, PTFE O-Rings ba sa fuskantar gazawar karkace, saboda haka yana yiwuwa rage girman gland.
• PTFE O-Rings ba su da daidaituwar O-Rings na roba;don haka ya zama dole a rage matsi na ƙetare daidai da abin da aka ƙayyade don roba don sauƙaƙe haɗuwa.

Tukwici na shigarwa don polymer O-Rings

Kare PTFE O-Rings daga samun nicked ko gouged yayin shigarwa yana da mahimmanci.Gouging na iya faruwa yayin shimfiɗa O-Rings akan kafadu masu kaifi ko zaren.Ana iya kauce masa ta hanyar loda zobba a kan wurare masu kaifi ta hanyar amfani da kayan aiki ko samar da hutun kusurwa ko radii.Matsakaicin mikewa, idan zai yiwu ƙasa da 10%, ana ba da shawarar yayin shigarwar O-Ring.Yin amfani da mai mai zafi ko wanka na ruwa yana sauƙaƙe mafi girma kamar yadda ake buƙata.Ana iya buƙatar canje-canjen ƙira ko hanyoyi na musamman don yanayin shimfiɗa fiye da 20%.

PTFE yana da saurin ratsawa kamar duk thermoplastics.Ana buƙatar magance wannan sifa don guje wa asarar nauyin rufewa.Yana yiwuwa a inganta tasirin ruwan sanyi ta hanyar gyaggyarawa ma'auni kamar yadda aka ba da shawarar a cikin tebur.

PTFE O-Rings za a iya ƙirƙira daga mahaɗa iri-iri kamar PTFE mai cike da graphite, tagulla da gilashi.A mafi yawan lokuta, ana iya cika buƙatun tare da PTFE da ba a cika ba.

Amfanin PTFE O-Rings

• O-Rings ɗaya ne daga cikin ingantattun mafita don tsarin ƙananan matsa lamba
• Daidaituwar sinadaran duniya na PTFE
• Faɗin zafin jiki tsakanin -320 °F da +500 °F
• Farashi mai sauri da juyawa da sauri
• Zaɓin girman girman O-Rings tsakanin 0.110 ″ da ~ 40″;Ana samun girma na musamman akan buƙata
• Vacuum zuwa babban matsi, lokacin da aka yi amfani da shi tare da zoben baya mai dacewa

Hotuna don PTFE O-Rings

;