Amakhonkco e-Rubber O {0}, njengezona zinto zisetyenziswa kakhulu zokutywina kwintsimi yoshishino, umgangatho wokusetyenziswa kwazo uchaphazela ngokuthe ngqo ukuthembeka kokutywinwa, ukusebenza kakuhle kunye nobomi benkonzo yezixhobo. Ngokwembono yesicelo sobunjineli, eli nqaku lihlela ngokucwangcisiweyo iindlela zokukhetha zesayensi, iinkqubo zofakelo ezisemgangathweni, amanqaku aphambili okugcinwa rhoqo kunye neendlela zokuthintela ukusilela okuqhelekileyo kwerabha O{2}}amakhonkco. Idityaniswe neempawu zezinto eziphathekayo kunye nemigaqo yokulungelelanisa imeko yokusebenza, ibonelela ngoochwephesha bobunjineli kunye neengcali ezinxulumene nazo zombini isikhokelo sokusetyenziswa kwezemfundo kunye nokusebenza, kunceda ukunciphisa umngcipheko wokungaphumeleli kokutywinwa.
I. Ukhetho lwezenzululwazi: Ukuhambelana ngokuchanekileyo ngokusekelwe kwiimeko zokusebenza kunye neempawu eziphathekayo
Undoqo wokukhetha irabha O{0}}amakhonkco kukuzuza ukulingana okuthathu -kadimensional "yentsebenzo yesixhobo - iimfuno zemeko yokusebenza - iparameters zesakhiwo" ukunqanda ukusilela kokutywinwa ngenxa yokutenxa kokukhetha.
1. Iiparamitha zeemeko zokusebenza zilawula ulwalathiso lokukhetha
Ukulungelelaniswa kobushushu: Khetha izinto ezisekelwe kwiqondo lokushisa kwindawo yokusebenza. Kwiimeko zobushushu obuphantsi-({5}}60℃ukuya -20℃), irabha yesilicone (VMQ) okanye irabha yefluorosilicone iyakhethwa. Kwiimeko eziphakamileyo zokushisa (i-150℃ukuya kwi-260 degree), i-fluororubber (FKM) ikhethiwe. Kwiimeko eziqhelekileyo zokushisa (-20℃ukuya kwi-100 degree), irabha ye-nitrile (NBR) okanye i-rubber chloroprene (CR) ingasetyenziswa.
Ukuhambelana okuphakathi: Xa udibana ne-non{0}}imidiya ye-polar efana ne-oyile ye-mineral kunye ne-hydraulic oil, i-nitrile rubber (NBR) iyakhethwa, njengoko izinga lokudumba kwevolumu lingalawulwa ngaphakathi kwe-10%. Xa udibana neendaba ezitshabalalisayo ezifana ne-acids eqinile, i-alkali enamandla kunye ne-oxidants eqinile, i-fluororubber (FKM) kufuneka ikhethwe. Kwimimandla yokutya kunye nokunakekelwa kwezonyango, i-rubber ye-silicone (VMQ) edibana nomgangatho we-USP ye-Class VI kufuneka ikhethwe ukuqinisekisa ukuhambelana kwezinto eziphilayo.
Pressure adaptation: For low-pressure conditions (≤10MPa), conventional O-rings can be selected. For medium and high-pressure conditions (10MPa to 30MPa), retaining rings should be used in combination. For ultra-high-pressure conditions (>30MPa), isakhiwo esomeleziweyo O{1}}amakhonkco kufuneka akhethwe ukunqanda umonakalo owenziweyo.
2. Ukukhetha okusemgangathweni kweeparamitha zesakhiwo
Umnqamlezo -idayamitha yecandelo kunye nomlinganiselo woxinzelelo: Umnqamlezo{1}}idamitha yecandelo le-O{2}}ifanele imiselwe ngokusekelwe kubungakanani begroove yokutywina, kwaye umlinganiselo wocinezelo kufuneka ulawulwe ngaphakathi koluhlu olufanelekileyo lwe-15% ukuya kwi-30%. Umlinganiselo wokunyanzeliswa ophantsi kakhulu unokukhokelela ngokulula kwizithuba zokutywinwa, ngelixa lowo uphezulu kakhulu uya kukhawulezisa ukuguga kokuguga kwezinto kunye nokunciphisa ubomi babo benkonzo.
Unyamezelo lweDimensional: Khetha O{0}}amakhonkco athobela imigangatho ye-GB/T 3452.1 okanye ISO 3601, eqinisekisa ukuba idiameter yangaphakathi kunye nokunyamezela{3}} kwecandelo lokunyamezelwa kwedayamitha kuphakathi koluhlu oluvumelekileyo ukunqanda ukuchaphazela isiphumo sokutywinwa ngenxa yokunxaxha kwe-dimensional.
Ii. Ukufakela okusemgangathweni: Gwema ukonakala komntu kunye neziphene zokutywinwa
Ukubekwa emgangathweni komsebenzi wofakelo kuqinisekisa ngokuthe ngqo imo yokuqala yokutywinwa yerubha O{0}}ringi. Kuyimfuneko ukuba ulandele ngokungqongqo amanyathelo amane-enkqubo "yokucoca - efanelekile - yofakelo - yokuhlola".
1. Amalungiselelo phambi kofakelo
Ukucoca unyango: Coca ngokucokisekileyo iigrooves zokutywina, iindawo zokutywina kunye nomphezulu we-O{0}}amakhonkco ukususa amabala e-oyile, iifayili zentsimbi, uthuli kunye nobunye ukungcola ukuthintela ukungcola ukuba kufakwe kwiindawo zokutywina kunye nokubangela imikrwelo.
Ukuthambisa okungaphezulu: Ngokuhambelana nokuphakathi, khetha isithambiso esifanelekileyo (esifana nesilicon -igrisi esekwe, igrisi esfluorine{1}esekelwe kwigrisi), kwaye uyifake ngokulungeleleneyo kumphezulu we-O{2}}ringi kunye nodonga lwangaphakathi lwegroove yokutywina ukunciphisa ukukhuhlana ngexesha lofakelo lokuqhekeka ngenxa yokwaphuka kwerubha.
Ukulungiswa kwesixhobo: Sebenzisa izixhobo zokufakela ezizinikeleyo (ezifana nezixhobo zeplastiki, imikhono yesikhokelo), kwaye ugweme ukudibana ngokuthe ngqo kwezixhobo zentsimbi ezibukhali nge-O{0}}amakhonkco ukuthintela imikrwelo okanye ukubhoboza kumphezulu werabha.
2. Ukulinganisa imisebenzi yokufakela
Xa ufaka, gwema ukunweba ngokugqithiseleyo kwe-O- ring (izinga lokwelula Ngaphantsi okanye elilingana ne-5%) ukukhusela umonakalo kwisakhiwo se-molecular of the material. Kwizitywina ezenziwe ngaphambili, kuyimfuneko ukuqinisekisa ukuba i-O{3}} amakhonkco afakwe ngokupheleleyo kwi-grooves ngaphandle kokuphazamiseka okanye ukuchithwa.
Ukujongana neemeko zokutywinwa kwentshukumo, kuyafuneka ukuqinisekisa ukuba ucoceko olufanelekileyo phakathi kwe-O{0}}nezahlulo ezihambayo kunye neendawo ezihambayo kunengqiqo ukuphepha intshukumo egqithisileyo ngenxa yococeko olukhulu kakhulu okanye ukukhuhlana okukhulu ngenxa yococeko oluncinci kakhulu.
3. Ukuhlolwa emva kofakelo
Jonga ngokujonga ukuba iO{0}}iringi iwungena ngokupheleleyo umjelo, ngaphandle kwemibimbi okanye umonakalo. Qinisekisa isiphumo sokutywinwa ngovavanyo lokuqina komoya okanye uvavanyo loxinzelelo ukuqinisekisa ukuba akukho kuvuza.
Iii. ULondolozo lwarhoqo: Umlinganiselo ongundoqo wokwandisa uBomi beNkonzo
Undoqo wokugcina amakhonkco O{0}}yerabha ilele ekubekeni iliso rhoqo kunye nokungenelela ngexesha ukulibaziseka ukuguga kwezinto kunye nokuthintela ukwehla kokutywinwa kokusebenza.
Ukubekwa esweni rhoqo kunye nokugcinwa{0}}kwerekhodi
Misela i-ledger yokulungisa kwaye uhlole rhoqo imeko yenkangeleko ye-O{0}}irigi, kubandakanywa nokuba kukho naziphi na iziganeko ezifana nokuqhekeka, ukuqina, ukudumba, okanye ukuguqulwa. Kwizixhobo eziphambili, uvavanyo lokusebenza lokutywina (njengovavanyo lokubamba uxinzelelo kunye nokufumanisa ukuvuza) kufuneka luqhutywe rhoqo kwiinyanga ezi-3 ukuya kwezi-6.
Rekhoda utshintsho kwiiparamitha zemeko yokusebenza (ezifana nokuguquguquka kweqondo lobushushu, uhlengahlengiso lokwakheka okuphakathi, kunye nencopho yoxinzelelo), khawuleza uvavanye impembelelo ekusebenzeni kwee-O{0}}amakhonkco, kwaye uqikelele iimfuno zolondolozo kwangaphambili.
2. Amanyathelo olondolozo ekujoliswe kuwo
Kwi-O{0}}amakhonkco ahlala evezwe kubushushu obuphezulu-kunye neemeko zoxinzelelo oluphezulu{2}}, yenza mfutshane umjikelo wolondolozo kwaye endaweni yawo qho ngeenyanga ezili-12 ukuya kwezingama-24 ukunqanda ukungaphumeleli kwetywina okubangelwa kukwaluphala kwezinto.
Ukuba indawo yokusebenza iqulethe izinto zokuguga ezifana ne-ozone kunye nemisebe ye-ultraviolet, amanyathelo okukhusela kufuneka athathwe kwiindawo ezitywiniweyo (njengokufaka imikhono yokukhusela), okanye izinto ezinokumelana ne-ozone egqwesileyo, njenge-rubber chloroprene (CR) kunye ne-fluororubber (FKM), kufuneka zikhethwe.
Kuphephe ukugcina amakhonkco e-O{0}}kwimeko ecinezelweyo ixesha elide. Xa uzigcina, zibeke mcaba kwindawo epholileyo neyomileyo, kude nemithombo yobushushu, amabala e-oyile kunye nezinto ezitshisayo ukuthintela ukuguga kwangaphambi kwexesha.
Iv. Ukulawulwa kokungaphumeleli: Iindlela zokungaphumeleli eziqhelekileyo kunye nezisombululo
Ukungaphumeleli kwerabha O{0}}amakhonkco ahlala ehambelana nezinto ezifana nokuguga kwezinto, ukulungelelaniswa okungafanelekanga kwiimeko zokusebenza, kunye nomonakalo wofakelo. Kufuneka kuthatyathwe amanyathelo othintelo nawolawulo ekujoliswe kuwo.
Iindlela zokungaphumeleli eziqhelekileyo kunye nezizathu
Iseti yoxinzelelo: Ixesha elide-lobushushu obuphezulu okanye umlinganiselo woxinzelelo oluphezulu lukhokelela ekutshatyalalisweni komnqamlezo{1}}ulwakhiwo oludityanisiweyo lwemixokelelwane yerabha yemolekyuli kunye nokulahleka koxinzelelo lokutywina, oluthi lwenzeka kakhulu-kusetyenziso lwexesha elide lwerabha yenitrile (NBR) phantsi{3}}kweemeko zobushushu obuphezulu.
Ukuvuvukala kweekhemikhali kunye nokuqhekeka: Ukungahambelani phakathi kwezinto kunye nephakathi kukhokelela ekwandiseni umthamo ongaqhelekanga we-O- ring kunye ne-brittleness yezinto kunye nokuqhekeka. Oku kubonakala ngokuqhelekileyo xa irabha ye-nitrile idibana nezinyibilikisi zepolar okanye i-fluororubber idibana nee-oxidants ezithile ezinamandla.
Ukonakala koomatshini: Imikrwelo ngexesha lofakelo, ukolula okugqithisileyo, okanye ukonakaliswa kwe-extrusion kunye nokunxiba kwe-friction phantsi kweemeko zokusebenza, kubonakaliswa njengokuqhekeka, iinotshi okanye ubukhulu obungalinganiyo kumphezulu we-O{0}}ringi.
Ukuguga kobushushu kunye nokuguga kwe-ozone:-ubushushu obuphezulu bubangela i-oxidation kunye nokuthotywa kweemolekyuli zerabha, ezibonakaliswa njengokuqina kunye nokuqhekeka. Kwimeko-bume ye-ozone,{2}}i-ozone{3}}izinto ezikwaziyo ukumelana ne-ozone ziqhelene nokuqhekeka komphezulu, ngakumbi kwiimeko eziguquguqukayo zokutywinwa.
2. Uthintelo ekujoliswe kulo kunye nolawulo kunye nezisombululo
Uxinzelelo loxinzelelo olusisigxina: Lungiselela uyilo loxinzelelo loxinzelelo ukunqanda ngaphezulu-uxinzelelo loluhlu; Khetha imathiriyeli enokumelana nokuguga okugqwesileyo, njengokuyibuyisela nge-fluororubber (FKM) phantsi kweemeko zokusebenza eziphezulu{1}}zobushushu.
Ukudumba kweekhemikhali kunye nokuqhekeka: Phinda-vavanye ukuhambelana kwezinto eziphakathi kunye nezinto eziphathekayo, kwaye ubeke indawo efanelekileyo, njengokutshintsha irabha ye-nitrile (NBR) kunye ne-fluororubber (FKM) ukuziqhelanisa neendaba ezibolayo.
Ngomonakalo womatshini: Ukulinganisa ukufakela kunye nokusebenza, kwaye usebenzise izixhobo ezinikezelweyo; Faka iiringi zokuzigcina kwiimeko zokusebenza zoxinzelelo oluphakathi kunye nophezulu. Lungiselela uburhabaxa bomphezulu wokutywina kwaye unciphise i-coefficient of friction.
Ukusilela kokwaluphala: Lawula ubushushu bendawo yokusebenza ukunqanda ukugqitha kuluhlu lonyamezelo lwemathiriyeli; Kwimiba esemngciphekweni we-ozone, irabha yeklororene (CR) okanye imathiriyeli yerabha ene-ozone eyongeziweyo{0}}izinto ezixhathisayo kufuneka zikhethwe.
