Menene robar o-ring kuma wane irin roba ake amfani da shi a cikin o-rings?

Da farko - don Allah a duba girman oring AS568  

Na biyu -Matsa adadin da kuma mikewa adadin dominbaka

O-ring shine hatimi na musamman da aka fitar.Matsakaicin matsawa da kuma shimfiɗa adadin diamita na giciye na O-ring shine babban abin da ke ciki na ƙirar ƙira, waɗanda ke da mahimmanci ga aikin rufewa da rayuwar sabis.Kyakkyawan tasirin rufewa na O-ring ya dogara da daidai daidai girman girman O-zobe da girman tsagi, samar da matsi mai ma'ana da kuma shimfiɗa adadin zoben rufewa.

1. Yawan matsawa

Yawan matsawa W yawanci ana bayyana shi kamar haka:

W=(d0 h)/d0× 100%

A cikin dabarar, d0- diamita na giciye na O-ring a cikin jihar kyauta (mm);

H - Nisa tsakanin kasan tsagi na O-ring da farfajiyar da aka rufe (zurfin tsagi), watau giciye-tsayi na O-zobe bayan matsawa (mm)

2.Lokacin da zabar matsawa rabo na O-ring, ya kamata a yi la'akari da wadannan abubuwa uku:

(1).Ya kamata a sami isasshen wurin tuntuɓar hatimi;(2).Yi ƙoƙarin rage ƙarfin juzu'i;(3).Yi ƙoƙarin guje wa nakasar dindindin.

Ba abu ne mai wahala a gani daga abubuwan da suka gabata cewa akwai sabani a tsakanin su ba.Matsakaicin yawan matsawa na iya samun babban matsin lamba, amma yawan matsawa babu shakka yana ƙara zamewar gogayya da nakasar dindindin.Idan adadin matsawa ya yi ƙanƙanta, yana iya zama saboda kuskuren coaxial da kuskuren O-ring na tsagi mai rufewa bai cika buƙatun ba, yana haifar da bacewar wasu adadin matsawa kuma yana haifar da yabo.Saboda haka, a lokacin da zabar matsawa rabo na O-ring, shi wajibi ne don auna daban-daban dalilai.Gabaɗaya, ƙimar matsi na hatimi a tsaye ya fi na hatimi mai ƙarfi, amma ƙimar sa ya kamata ya zama ƙasa da 25%.In ba haka ba, damuwa na matsawa zai sami kwanciyar hankali sosai kuma za a sami nakasar dindindin da yawa, musamman a yanayin aiki mai zafi.Zaɓin rabon matsawa W don hatimin O-ring ya kamata yayi la'akari da yanayin amfani, kamar hatimi mai tsayi ko tsauri;Za'a iya raba hatimi a tsaye zuwa radial sealing da axial sealing;Tazarar yayyo na hatimin radial (ko silinda a tsaye) shine ratar radial, yayin da tazarar tazarar hatimin hatimin axial (ko hatimin sitiriyo na planar) shine ratar axial.Axial sealing ya kasu kashi biyu yanayi dangane da ko matsakaicin matsa lamba yana aiki akan diamita na ciki ko diamita na O-ring: matsa lamba na ciki da matsa lamba na waje.Ƙara yawan matsa lamba na ciki yana haifar da ƙaddamarwa, yayin da matsa lamba na waje ya rage ƙaddamarwar farko na O-ring.Siffofin daban-daban na hatimi a tsaye da aka ambata a sama suna da kwatance daban-daban na aiki na matsakaicin hatimi akan O-ring, don haka ƙirar matsa lamba kuma ta bambanta.Don hatimi mai ƙarfi, ya zama dole don bambanta tsakanin hatimin motsi mai maimaitawa da hatimin motsi na juyawa.

(2).Rufewa a tsaye: Kamar na'urorin rufewa masu jujjuyawar, na'urori masu silsilar a tsaye suna ɗaukar W=10% zuwa 15%;Na'urar da ke kwance a tsaye tana ɗaukar W=15% ~ 30%.Don hatimi mai ƙarfi, ana iya raba shi zuwa yanayi uku;Ana ɗaukar motsi mai maimaitawa gabaɗaya azaman W=10% zuwa 15%.Lokacin zabar rabon matsawa don hatimin motsi na juyawa, dole ne a yi la'akari da tasirin zafi na Joule.Gabaɗaya magana, diamita na ciki na O-ring da ake amfani da shi don motsi na juyawa shine 3% -5% ya fi girma fiye da diamita na shaft, kuma matsi na diamita na waje shine W=3% -8%.Don ƙananan wasannin gogayya, O-rings gabaɗaya ana zaɓin su tare da ƙaramin matsi na W=5% -8% don rage juriyar juriya.Bugu da kari, ya kamata a yi la'akari da fadada kayan roba da matsakaici da zafin jiki ke haifarwa.Yawancin lokaci, bayan nakasar matsawa da aka bayar, matsakaicin adadin haɓaka da aka yarda shine 15%.Wucewa wannan kewayon yana nuna cewa zaɓin kayan bai dace ba, kuma yakamata a yi amfani da zoben O-ring na wasu kayan a maimakon haka, ko kuma a gyara ƙimar nakasar matsawa da aka bayar.

(3)Adadin mikewa,Bayan an shigar da shi a cikin tsagi na hatimi, O-ring gabaɗaya yana da takamaiman adadin mikewa.Kamar ƙimar matsawa, adadin shimfiɗa kuma yana da tasiri mai mahimmanci akan aikin rufewa da rayuwar sabis na O-ring.Babban adadin ƙaddamarwa ba wai kawai yana da wuya a shigar da O-ring ba, amma kuma yana rage yawan matsawa saboda canje-canje a cikin diamita na giciye d0, yana haifar da zubar da ciki.Adadin mikewa a za a iya bayyana kamar haka:α= (d+d0)/(d1+d0)A cikin tsari, d - diamita na shaft (mm);D1-- Diamita na ciki na O-ring (mm).Matsakaicin adadin mikewa shine 1% -5%.Abubuwan da aka ba da shawarar don ƙaddamar da adadin O-ring ana ba su a cikin tebur.Za a iya zaɓar adadin shimfiɗar O-ring bisa ga girman diamita na shaft bisa ga iyakar zaɓin tebur.Kewayon fifikon rabon matsawa da adadin mikewa don O-ring

Na uku-alaka tsakanin diamita na ciki (ID), diamita na waje (OD), da diamita na waya (C/S) na O-ring.

OD=ID+C/S*2 Kamar: ID=3MM C/S=1MM OD=3MM+1*2=5MM

Kayayyaki na huɗu da ake amfani da su wajen samar da O-ring

• NBR :NBR O-ring  

yana da kyakkyawan juriyar mai, juriya na benzene, juriya na zafi, da kaddarorin jiki da na inji, kuma yana ɗaya daga cikin albarkatun ƙasa gama gari don samfuran roba masu jure mai.Ana amfani da shi sosai a masana'antar gaskets mai juriya, gaskets, hoses na roba, akwatunan wasiku na jirgin sama, marufi masu sassauƙa, bugu da rini na roba, kayan USB, da adhesives.

• EPDM:EPDM O-ring 

tare da kyawawan kaddarorin inji, juriya na sinadarai, da juriya mai zafi, yayin da kuma ke nuna juriya mai ƙarfi.Ethylene propylene diene monomer (EPDM) yana nuna kyawawan kaddarorin dangane da juriya na ozone, juriya na zafi, juriya na yanayi, da ƙarancin laushi, yana sa ya dace da aikace-aikacen da ke jure yanayin ozone, jure yanayi, da juriya UV.Koyaya, saboda halayensa na tsari, jinkirin harshen wuta, juriyar mai, da mannewar roba na EPDM ba su da kyau.Duk da haka, irin wannan nau'in roba yana da babban tsari mai cikakken tsari kuma ana iya haɗa shi da wasu kayan don haɓaka aiki ta hanyar koyo daga ƙarfi da raunin juna.

• VMQ(SILICONE):SILICONE O-ring

 tare da zafin jiki da juriya mai.Silicone roba yana da kyau low-zazzabi juriya da kuma iya kullum aiki a -55℃.Bayan gabatarwar phenyl, zai iya kaiwa -73℃.Juriya na zafi na roba na silicone shima yana da fice, kuma yana iya aiki na dogon lokaci a 180℃.Yana iya jure makonni da yawa ko fiye na elasticity ko da a ɗan sama da 200℃, kuma nan take zai iya jure yanayin zafi sama da 300℃.Silicone roba yana da kyau breathability da oxygen permeability ne mafi girma a cikin roba polymers.Bugu da kari, silicone roba kuma yana da fitattun halaye na physiological inertness kuma ba ya haifar da coagulation, sa shi yadu amfani a cikin likita filin.

•  VITON (FKM FPM):VITON O-RING  

yana da kyakkyawan juriya na zafi, juriya na iskar shaka, juriyar mai, juriya na lalata, da juriyar tsufa na yanayi, kuma an yi amfani dashi sosai a fannoni kamar sararin samaniya, jirgin sama, motoci, man fetur, da kayan aikin gida.Abu ne mai mahimmanci wanda ba za a iya maye gurbinsa ba a cikin manyan masana'antu na tsaron ƙasa

•  HNBR :HNBR O-RING

 yana da juriya mai kyau (mai kyau juriya ga mai mai, mai mai mai, da kaushi mai kamshi);Kuma saboda cikakken tsarinsa, yana da kyakkyawan juriya na zafi, kyakkyawan juriya na lalata sinadarai (mai kyau juriya ga Freon, acid, da alkali), kyakkyawan juriya na lemar sararin samaniya, da juriya na nakasar dindindin;Bugu da kari, roba nitrile hydrogenated shi ma yana da halaye kamar ƙarfin ƙarfi, tsayin daka, da juriya mai kyau, yana mai da shi ɗayan mafi kyawun roba dangane da ingantaccen aiki.

•  CR(neoprene)CR O-RING

tare da kyawawan kaddarorin jiki da na inji, juriya mai, juriya mai zafi, juriya na harshen wuta, juriyar hasken rana, juriya na lemun tsami, juriya acid da alkali, da juriya na reagent.Rashin hasara shine rashin juriya mai sanyi da kwanciyar hankali na ajiya.Yana da babban ƙarfin ƙarfi, elongation, crystallinity mai jujjuyawa, da mannewa mai kyau.Mai tsayayya ga tsufa da zafi.Kyakkyawan mai da juriya na sinadarai

FVMQ: FVMQ O-ring tare da Kyawawan kaddarorin jiki da na inji da kwanciyar hankali na sinadarai, mai iya amfani da dogon lokaci a 200℃da kuma amfani da gajeren lokaci a 250℃;Matsakaicin raguwa ya tashi daga -20℃ku -40℃;Kyakkyawan juriya na matsakaici, kyakkyawan kwanciyar hankali akan kaushi na halitta, inorganic acid, da oxidants, musamman madaidaicin juriya na acid;Yana da kyakkyawan juriya na yanayi da juriya na ozone.Bayan da aka fallasa shi zuwa yanayi na shekaru da yawa, kayan aikin sa na zahiri da na injiniya suna canzawa kaɗan kaɗan, kuma tasirinsa akan ƙananan ƙwayoyin cuta shima yana da kwanciyar hankali.

•  FEPM (Aflas):FEPM O-RING

yana da kwanciyar hankali mai kyau, juriya na sinadarai, musamman juriya ga yawan adadin acid, alkalis, da magunguna masu ƙarfi don nau'ikan abubuwan da ake amfani da su na abin hawa, mai mai, mai birki, mai ma'adinai, da mai na silicone, da kyakkyawan juriya ga ruwa mai ƙarfi. tururi, ruwa, da rufin lantarki.Yana da ƙarancin numfashi kuma ana iya amfani dashi a yanayin zafi tsakanin -400 zuwa 200 digiri Celsius

•  FFKM :FFKM O-ring

Yana da elasticity da thermal da kwanciyar hankali na sinadarai na polytetrafluoroethylene.Yanayin aiki na dogon lokaci -39 ~ 288 digiri Celsius, ɗan gajeren lokaci har zuwa 315 digiri Celsius, har yanzu yana da wani nau'i na filastik a ƙasa da zafin jiki, mai wuya amma ba gauraye ba, kuma ana iya lanƙwasa.Barga ga duk sinadarai ban da kumburi a cikin abubuwan kaushi mai ƙarfi.ita ce roba mafi tsada a duniya A halin yanzu. Alamar:Kalrez

Na biyar- Ƙirar O-ring na roba Hanyoyin aunawa da kayan aiki.

Kayan aikin auna gama gari da:

1-High madaidaicin majigi

Halayen kayan aiki:Ma'auni mara lamba, yin ma'auni mara ganuwa kuma ya dace da auna ma'auni na bakin ciki da sassa masu laushi;Yana da aikin haɓaka hoto mai ƙarfi da ƙarfin ƙarami mai ƙarfi; Saurin ma'auni yana inganta haɓakar ma'auni;Mafi girman ma'aunin ƙira yana tabbatar da babban amincin ma'auni; Matsawa mai dacewa.

2-Electronic digital caliper

Halayen kayan aiki:Kayan aikin auna tsayi wanda ke amfani da tsarin aunawa kamar capacitive da grid na maganadisu don nuna ƙimar ma'auni a lambobi.Ƙaddamar da aka saba amfani da ita shine 0.01mm, tare da kuskuren izini na ± 0.03mm/150mm.Hakanan akwai madaidaicin madaidaicin dijital tare da ƙudurin 0.005mm, tare da kuskuren izini na ± 0.015mm/150mm.Har ila yau, akwai nau'i-nau'i mai mahimmanci na nuni na micrometer caliper tare da ƙuduri na 0.001mm (wanda shine alamar ƙasa don Anyi auna kayan aikin kuma kawai za su iya samar da shi), tare da kuskuren izini na ± 0.005mm / 50mm.Saboda ingantaccen karatu da bayyane, ingancin ma'aunin yana da girma.

3-π mulki(PITAPE)

Halayen kayan aiki:

1. Mai mulki yana kunshe da tsiri na ƙarfe na roba.Ƙarshensa biyu bi da bi an zana su tare da manyan shugabanni da masu taimako.Matsakaicin ƙimar digiri na babban mai mulki shine 0.5mm ko 1mm;Matsakaicin ƙimar karatun digiri na mai mulki shine 0.02mm, 0.05mm, 0.01mm, 0.1mm, da sauransu.

2. Lokacin da ake amfani da shi, kunsa mai mulki a kusa da kayan aikin kuma yi amfani da hanyar karantawa ta vernier don karanta matsakaicin diamita kai tsaye na yanki da aka auna.

• Fa'idodi da rashin amfani

(1).Babban daidaito: Yayin da aka auna diamita ta hanyar kewayar mai mulki, kuskuren alamar yayin samar da mai mulki na iya ragewa ta lokutan π kuma yana nunawa a cikin sakamakon aunawa.Don haka a cikin φ A cikin manyan ma'aunin diamita sama da 500mm, daidaiton sa ya fi na ma'aunin vernier caliper.zauna φ Wannan fa'idar ta shahara musamman a ma'aunin sama da 1000mm.

(2).Lokacin auna sassan karfe tare da mai mulki π, zafin aikin aikin bai shafe shi ba.Wannan saboda π mai mulki yana da sirara sosai, kuma zai zama na dabam tare da guntun da aka gwada a cikin ɗan gajeren lokaci yayin aunawa.Bugu da ƙari, ƙayyadaddun ƙayyadaddun haɓakar yanayin zafi na su yana kusa sosai, da gaske suna shawo kan tasirin zafin jiki.

(3. A cikin ma'auni na manyan diamita masu girma da kuma karin girma, yin amfani da kayan aiki na kayan aiki (maganin gadoji na magnetic) yana ba da damar aiki mai sauƙi ta mutum ɗaya a lokaci guda.

(4).Auna sassa na bakin ciki mai bango ba sauƙi ba ne don haifar da lalacewa na yanki na aikin.(5).Mafi dacewa don ɗauka da adanawa (6).Farashin yana da ƙasa.

(7).Hasara: Rashin iya kulle karatun;Ba za a iya auna juzu'i na geometric kamar ovality ba.

Amfani da O-ring na shida da shigar o-ring.

1. Amfani da O-ring

Ana amfani da O-ring a ko'ina a cikin mahaɗin nau'ikan na'ura mai aiki da karfin ruwa da na'urorin huhu, saman silinda, da saman flange.Domin O-zoben da aka yi amfani da su yayin motsi, lokacin da matsa lamba na aiki ya fi 9.8Mpa kuma an fuskanci matsa lamba na unidirectional, ya kamata a sanya zobe mai riƙewa a gefe na O-ring a cikin matsa lamba;Idan an fuskanci matsawa biyu, sanya zoben riƙewa a bangarorin biyu na O-ring.Don rage juzu'i, ana iya amfani da zoben riƙewa masu siffa mai siffa.Lokacin da aka yi amfani da ruwa mai matsa lamba daga hagu, ana tura zoben riƙewa na dama sama, kuma zoben riƙewa na hagu baya haɗuwa da saman da aka rufe, don haka yana rage ƙarfin juzu'i.Gabaɗaya, yin amfani da zoben riƙewa yana ƙara ƙarfin juzu'i na na'urar rufewa, kuma zoben riƙe da siffa mai siffa suna da matuƙar mahimmanci wajen rage wannan ƙarfin juzu'i.Don ƙayyadaddun zoben O-ring, ana kuma buƙatar riƙon zobe lokacin da matsin aiki ya fi 32Mpa.

2. Oring shigarwa

Ingancin shigarwa na O-zobba yana da tasiri mai mahimmanci akan aikin rufe su da rayuwar sabis.Matsalolin zubewa galibi ana haifar da su ne ta hanyar rashin shigarwa. A yayin aikin shigarwa, ba a yarda a tono zoben O-ring, a yi kuskure, ko murɗawa.Kafin taro, dole ne a tsaftace tsagi mai rufewa da mating surface;A lokaci guda, yi amfani da man shafawa mai lubricating zuwa saman da ke buƙatar wucewa ta yayin taron O-ring. Don hana O-ring daga yankewa ko tashe ta da gefuna masu kaifi kamar sasanninta masu kaifi da zaren yayin shigarwa, 15 º zuwa 30 º gubar-a kusurwa ya kamata a bar shi a ƙarshen shaft da ƙarshen rami na shigarwa.Lokacin da O-ring yana buƙatar wucewa ta cikin zaren waje, yakamata a yi amfani da hannun riga na ƙarfe na bakin ciki na musamman don rufe zaren waje;Idan O-ring ɗin yana buƙatar wucewa ta wurin, dole ne a juyar da bangon zuwa siffar diagonal mai dacewa don hana ɓarna a kan O-ring.Matsakaicin kusurwar tsagi gabaɗaya shine a = 120 º ~ 140 º

Kuna iya koyan ilimin da ke da alaƙa da yawa daga nan.Daga baya, za mu gabatar da wasu ilimi game dahatimin mai, hatimin hydraulic,ko kuma wasumusamman roba sassa,kamarCat man hatimi, NBR mai hatimi,FKM hatimin mai,TC mai hatimi, TB man hatimi TA mai hatimi , SC mai hatimi SB mai hatimi ,hatimin fistan, hatimin sanda ,hatimin bazara ,hatimin hatimi, u kofin hatimi, hatimin kura,Shafa hatimi, sa zobe , zoben baya ,igiyoyin roba, igiyoyin zobe, don haka muna buƙatar ƙarin lokaci gabatar da wannan ilimin ga kowa da kowa.Na gode da lokacin ku!