Ziziphi izinto eziqwalaselwayo xa ukhetha i-O-ring?

Ekusetyenzisweni kwe-O-rings, iimeko ezithile zokusebenza kunye neemeko zokusetyenziswa kufuneka ziqwalaselwe.Ubushushu kunye noxinzelelo luya kuba nemiphumo kunye nelahleko kwi-O-ring seal.Ke ngoko, la manqaku alandelayo ama-5 kufuneka aqwalaselwe ekusebenziseni i-O-ring rubber seal:

1. Iimeko zokusebenza kunye neemeko zokusebenza;

2. Ukuhambelana kwemveliso kunye nesixhobo sokusebenza, kwaye emva koko kuqwalaselwe uxinzelelo, ubushushu, ixesha eliqhubekayo lokusebenza, umjikelo wokusebenza kunye nezinye iimeko kwitywina, kunye nokunyuka kwamaqondo okushisa okubangelwa ukufudumala kokushisa kufuneka kuthathelwe ingqalelo kwiimeko ezijikelezayo;

3. Ifom yokutywina: Xa isitywina se-shaft sifakwe kwi-radially, ukutenxa phakathi kwe-diameter yangaphakathi ye-O-ring kunye nobubanzi obuza kutywinwa kufuneka bube buncinci kangangoko;Ukutywinwa komngxuma, i-diameter yangaphakathi kufuneka ilingane okanye incinci kancinci kunobubanzi bomsele.Xa ufaka i-axially, isikhokelo soxinzelelo kufuneka siqwalaselwe.Xa kusetyenziswe uxinzelelo lwangaphakathi, ububanzi bangaphandle be-O-ring kufuneka bube malunga ne-1% ~ 2% enkulu kunobubanzi obungaphandle be-groove.Xa i-diameter yangaphandle iphantsi koxinzelelo, ububanzi bangaphakathi be-O-ring kufuneka bube buncinci kune-groove1% ~ 3%.

4. Ezinye izinto ezichaphazela ukusebenza kokutywinwa

I-1) Ubunzima: Qinisekisa inani lokunyanzeliswa kwe-O-ring kunye ne-gap ephezulu evumelekileyo ye-extrusion ye-groove;

I-2) I-gap ye-Extrusion: uxinzelelo lwenkqubo, i-O-ring yecandelo ububanzi kunye nobunzima bezinto eziphathekayo.

I-3) Ukunyanzeliswa kokuguqulwa kwesigxina: Kwimeko yoxinzelelo, ukwenzela ukukhusela ukuguqulwa kweplastiki esisigxina.Ukunyanzeliswa okuphezulu okuvunyelwe yi-O-ring malunga ne-30% kwiimpawu ze-static kunye ne-20% kwiimpawu eziguquguqukayo.

I-4) Isixa sangaphambi koxinzelelo: Ukuze kuqinisekiswe ukuqina kwi-groove ye-O-ring, inani lokuqala lokunyanzeliswa kufuneka ligcinwe.Isixa sangaphambili soxinzelelo olunxulumene nobubanzi becandelo ngokuqhelekileyo malunga ne-15% ~ 30% kwisitywina esimileyo.Imalunga ne-9% ~ 25% kwisitywina esiguqukayo.

I-5) Uxinzelelo kunye nokunyanzeliswa: Kwisitywina somngxuma, i-O-ring ikwimeko eyoluliweyo, kwaye ubuninzi obuvumelekileyo bokwelula ngu-6%.Ukutywinwa kwe-shaft, i-O-ring ixinzelelwe ecaleni kwendlela ye-circumference, kwaye ubuninzi obuvumelekileyo be-circumference compression yi-3%.

5. I-O-ring isetyenziselwa i-low-speed rotary motion kunye ne-rotary shaft seal kunye nomjikelezo omfutshane wokusebenza.Xa isantya se-peripheral singaphantsi kwe-0.5m / s, ukukhethwa kwe-O-ring kunokusekelwe kwimigangatho yoyilo eqhelekileyo;xa isantya se-peripheral sisikhulu kuno-0.5m/s, Kuyimfuneko ukuqwalasela into yokuba iringi yerabha emide iyancipha emva kokuba ishushu, kwaye umsesane wokutywina kufuneka ukhethwe ukuze ubukhulu bangaphakathi bube malunga ne-2% enkulu kunobubanzi be-rabha. umphini otywiniweyo.