Impeta ya O-O itwikiriwe na PTFE
Impeta za O-O za PTFE zitwikiriwe ni iki?
Impeta za O-zifite PTFE ni ibifunga bivanze birimo ipfundo rya O-ringer gakondo (urugero: NBR, FKM, EPDM, VMQ) nk'igice cyoroshye, aho hashyirwa agace gato, kamwe kandi gafatanye neza ka polytetrafluoroethylene (PTFE). Iyi miterere ihuza ibyiza by'ibikoresho byombi, bigatuma habaho imikorere yihariye.
Ahantu hakenewe imfashanyigisho z'ibanze
Bitewe n'imiterere yazo idasanzwe, impeta za O-rings za PTFE zikoreshwa cyane mu bidukikije bigoye cyane kandi zisabwa byihariye mu kuzifunga:
Inganda zikora imiti n'ibikomoka kuri peteroli:
Gufunga valve, pompe, reactors, na pipe flanges bikoresha ibintu byangiza cyane nka aside ikomeye, alkali zikomeye, oxidizer zikomeye, na organic solvents.
Gufunga mu buryo bwo gutanga imiti isukuye cyane kugira ngo hirindwe kwandura.
Inganda zikora imiti n'ikoranabuhanga:
Gufunga ibikoresho byo gutunganya ibintu bisaba isuku nyinshi, nta gusohora amazi, kandi nta kwanduzanya (urugero: bioreactors, fermenters, sisitemu zo gusukura, imiyoboro yuzuza).
Gufunga birwanya imashini zisukura imiti ikaze n'umwuka ushyushye ukoreshwa mu buryo bwa CIP (Clean-in-Place) na SIP (Sterilize-in-Place).
Inganda z'ibiribwa n'ibinyobwa:
Ibimenyetso by'ibikoresho byujuje amabwiriza ya FDA/USDA/EU yo guhuza ibiryo (urugero: ibikoresho byo gutunganya, kuzuza, imiyoboro).
Irwanya imiti isukura ibiryo n'imiti isukura amazi.
Inganda zikora ibikoresho bya elegitoroniki n'ibinyabutabire:
Ifumbire zirinda amazi meza cyane (UPW) n'ibinyabutabire bifite isuku nyinshi (aside, alkali, ibinyabutabire), zisaba ko habaho uduce duto cyane two gukora no gusohora iyoni mu byuma.
Ibyuma bifunga ibyumba bisukura umwuka n'ibikoresho bitunganya plasma (bisaba ko umwuka usohoka mu kirere udahagije).
Inganda z'imodoka:
Gufunga ahantu hashyuha cyane nka sisitemu za turbocharger na sisitemu za EGR.
Ifuru zisaba ubukana buke n'ubudahangarwa bw'imiti mu byuma bitwara amashanyarazi n'ibikomoka kuri lisansi.
Ikoreshwa mu buryo bushya bwo gukonjesha batiri z'imodoka zikoresha ingufu.
Ibyerekeye Ikiresiteri n'Ubwugarizi:
Ifuru zisaba ubwizigirwa bwinshi, ubushyuhe bukabije, no kudakoresha lisansi zidasanzwe/amazi y'amazi mu buryo bwa hydraulic, sisitemu za lisansi, na sisitemu zo kugenzura ibidukikije.
Inganda Rusange:
Ifunze za silindiri zikoresha umwuka n'amazi zikenera gukururana guke, kuramba, no kudashira (cyane cyane iyo zigenda zihuta cyane kandi zisubiranamo inshuro nyinshi).
Ifunga za vali zitandukanye, pompe, n'ibihuza bisaba ubushobozi bwo kudafata imiti n'ubushobozi bwo kudafata.
Ibyuma bifunga ibikoresho bivamo umwuka (bisaba ko umwuka usohoka mu kirere udahagije).
Ibyiza Bidasanzwe n'Ibiranga Imikorere
Akamaro k'ingenzi k'impeta za O-rings za PTFE kari mu mikorere myiza y'ibice bivanze bikomoka ku miterere yazo:
Ubudahangarwa budasanzwe bwa shimi:
Imwe mu nyungu z'ingenzi. PTFE igaragaza ubudahangarwa bukomeye ku bintu hafi ya byose bya shimi (harimo aside ikomeye, alkali zikomeye, aqua regia, solvents organic, nibindi), ibyo byinshi mu byuma bya pulasitiki bitabasha kugeraho byonyine. Irangi ritandukanya neza ibyuma byangiza ibidukikije n'imbere mu gice cy'imbere cya pulasitiki, rikongera cyane urwego rw'ikoreshwa rya O-ring mu bidukikije bikomeye bya shimi.
Korejiyoneri yo Kugongana (CoF) iri hasi cyane:
Akamaro gakomeye. PTFE ifite kimwe mu bipimo bya CoF biri hasi cyane mu bikoresho bikomeye bizwi (ubusanzwe 0.05-0.1). Ibi bituma impeta za O-rings zipfundikiye ziba nziza mu bikorwa byo kuziba (urugero: inkoni za piston zisubiranamo, imigozi izunguruka):
Bigabanya cyane gucika no gukururana kw'imitsi.
Bigabanya ubushyuhe n'ingufu biterwa no gushwanyagurika.
Yongera igihe cyo gufunga (cyane cyane mu bikorwa byihuta cyane kandi bikunze gukoreshwa).
Binoza imikorere myiza y'ingufu za sisitemu.
Ingano y'ubushyuhe bunini mu mikorere:
Igitambaro cya PTFE ubwacyo gikomeza imikorere mu bushyuhe bwinshi cyane kuva kuri -200°C kugeza kuri +260°C (igihe gito kugeza kuri +300°C). Ibi byongerera cyane ubushyuhe bwo hejuru bw'impeta ya O-ring ya rubber y'ibanze (urugero, ishingiro rya NBR rikunze kugarukira kuri ~120°C, ariko hamwe na PTFE irakoreshwa ku bushyuhe bwinshi, bitewe na rubber yatoranijwe). Ubushyuhe buke nabwo burashoboka.
Imiterere myiza cyane yo kudafatana no kudatoha:
PTFE ifite ingufu nke cyane ku buso, bigatuma idafatana neza kandi ntitose amazi n'amavuta. Ibi bivamo:
Kugabanya kwanduza, gushonga, cyangwa gufatana kw'ibisigazwa by'ibice ku buso bufunze.
Isuku yoroshye, cyane cyane ikwiriye ahantu hasukuye cyane nko mu biribwa no mu bya farumasi.
Gukomeza gukora neza mu gufunga ndetse no mu bikoresho binini.
Isuku nyinshi kandi nta bintu bishobora gusohoka mu mazi:
Ubuso bworoshye kandi bunini bwa PTFE bugabanya gusohoka kw'uduce duto, inyongeramusaruro, cyangwa ibintu bifite uburemere buke bwa molekile. Ibi ni ingenzi cyane mu gukoresha isuku nyinshi mu byuma bipima ibintu, imiti, ikoranabuhanga rya biotech, n'ibiribwa n'ibinyobwa, bigakumira kwandura kw'ibicuruzwa.
Ubudahangarwa Bwiza bwo Kwambara:
Nubwo ubushobozi bwa PTFE bwo kudashira butari bwiza cyane, CoF yayo iri hasi cyane igabanya cyane ubwinshi bw'ingufu. Iyo ihujwe n'icyuma gikwiye cya rubber (gitanga inkunga n'ubudahangarwa) hamwe n'uburyo bukwiye bwo gusukura/gusiga amavuta, impeta za O-rings zitwikiriwe muri rusange zigaragaza ubushobozi bwo kudashira neza kuruta impeta za O-rings za rubber zidafite ibara mu buryo buhindagurika.
Ubudahangarwa bw'ibinyabutabire bw'agace k'umuraba burushaho kwiyongera:
Iyi mvange irinda imbere mu gice cy'imbere cya rubber kugabanyirizwa, bigatuma ikoreshwa ry'ibikoresho bya rubber bifite imiterere myiza (nk'ubudahangarwa cyangwa ikiguzi, urugero, NBR) mu gice cy'imbere cya rubber gisanzwe kibyimba, kigakomera, cyangwa kikangiza. Irinda ubudahangarwa bw'urubber hamwe n'ubudahangarwa bwa PTFE mu binyabutabire.
Ihuza neza n'ibikoresho byo mu bwoko bwa Vacuum:
Imyambaro ya PTFE yo mu rwego rwo hejuru ifite ubucucike bwiza kandi imyuka mike ivamo, hamwe n'ubukonje bw'imbere mu cyuma, bigatuma habaho kuziba neza kw'icyuma gifunga umwuka.
3. Ibintu by'ingenzi bigomba kwitabwaho
Igiciro: Gihanitse kurusha impeta zisanzwe za O-rings.
Ibisabwa mu gushyiraho: Bisaba ko ubikora witonze kugira ngo wirinde kwangiza irangi ukoresheje ibikoresho bityaye. Imirongo yo gushyiraho igomba kuba ifite imiyoboro ihagije kandi ifite ubuso bworoshye.
Ubuziranenge bw'igitambaro: Ubwiza bw'igitambaro (gufata neza, kuba kimwe, kutagira utwenge tw'imigozi) ni ingenzi cyane. Iyo igitambaro cyangiritse, irangi ryagaragaye ritakaza ubushobozi bwo guhangana n'ibinyabutabire.
Itsinda ry'ingufu: Biterwa ahanini n'ingufu zatoranyijwe za rubber. Ingufu ubwayo ntitanga ubushobozi bwo kwihanganira ingufu.
Ubuzima bwa serivisi ihoraho: Nubwo ari bwiza cyane kurusha irangi ryambaye ubusa, irangi rizashira iyo rimaze igihe kirekire, rihindagurika cyane cyangwa rizunguruka. Guhitamo irangi risanzwe ridashobora kwangirika (urugero, FKM) no gushushanya neza bishobora kongera igihe cyo kubaho.
Incamake
Agaciro k'ingenzi k'impeta za O-ziritse kuri PTFE gashingiye ku buryo ipfundikizo rya PTFE ritanga ubukana buhanitse bwa shimi, ubukana buke cyane bw'ubushyuhe, ubushyuhe bwinshi, imiterere idafata, isuku nyinshi, no kurinda substrate ku mpeta za O-ziritse ku buryo gakondo. Ni igisubizo cyiza ku bibazo bikomeye byo gufunga birimo ingese ikomeye, isuku nyinshi, ubukana buke, n'ubushyuhe bunini. Mu guhitamo, ni ngombwa guhitamo ibikoresho bikwiye bya substrate ya rubber n'ibipimo bya coating hashingiwe ku mikoreshereze yihariye (ubushyuhe, ubushyuhe, umuvuduko, dynamic/static), no kwemeza ko ishyirwaho n'iyubakwa rikwiye kugira ngo ipfundikizo rikomeze kuba ryiza kandi rikore neza.
Imbonerahamwe iri hepfo igaragaza muri make imiterere y'ingenzi n'ikoreshwa ry'impeta za O-rings za PTFE:
