Indlela yokuqinisekisa ukutywinwa okuthembekileyo kwe-high-pressure tube fittings kunye ne-O-ring seals?

O-ring

Zombini izitywina ze-SAE flange kunye ne-O-ring end seals zitywinwe ngamakhonkco e-O. Ezi zixhobo zisetyenziswa ngokubanzi kwizicelo ezinoxinzelelo oluphezulu kakhulu kwaye iimfuno zokuthembeka kwezixhobo zoomatshini nazo ziphezulu kakhulu. Ezi zihlandlo zokusetyenziswa zitywina zoxinzelelo olusisigxina. Sinokuqinisekisa njani ukuthembeka kweempawu ze-O-ring

Umgaqo wokutywinwa kwee-O-rings ezisetyenziselwa ukutywinwa koxinzelelo lwe-static

Emva kokuba i-O-ring ifakwe kwi-groove yokutywina, i-cross-section yayo iphantsi koxinzelelo loqhagamshelwano, okubangela ukuguqulwa kwe-elastic deformation, kwaye ivelise uxinzelelo lokuqala lwe-P0 kwindawo yokudibanisa. Ngaphandle koxinzelelo oluphakathi okanye ngoxinzelelo oluncinci kakhulu, i-O-ring inokufikelela ukutywinwa ngokuxhomekeke kuxinzelelo lwayo olulastiki. Xa i-cavity igcwele i-pressurized medium, phantsi kwesenzo soxinzelelo oluphakathi, i-O-ring ihambela kwicala eliphantsi loxinzelelo, kwaye i-elastic yayo iyanda, izalise kwaye ivale i-gap. Ngaphantsi kwesenzo soxinzelelo oluphakathi, uxinzelelo loqhagamshelwano lwePp oludluliselwe kwindawo esebenzayo yi-O-ring kwandisa ukusebenza kwindawo yokudibanisa iperi yokutywina kwi-Pm.

Uxinzelelo lokuqala ngexesha lofakelo lokuqala

Uxinzelelo oluphakathi luhanjiswa nge-O-ring.

Ukuqulunqwa koxinzelelo loqhagamshelwano

Ukuthatha i-tube ye-O-ring yokutywinwa kobuso njengomzekelo, xubusha izinto ezichaphazela ukutywinwa kwe-tube fitting.

Okokuqala, isitywina kufuneka sibe nomlinganiselo othile wokunyanzeliswa kofakelo. Xa uyila ubungakanani be-O-ring seal kunye ne-groove, ukunyanzeliswa okufanelekileyo kufuneka kuthathelwe ingqalelo. Ubungakanani betywina obuqhelekileyo be-O-ring kunye nobukhulu obuhambelanayo begroove sele buchaziwe kwimigangatho, ngoko ungakhetha ngokwemigangatho.

Uburhabaxa bomphezulu begroove yetywina akufunekanga bube bukhulu kakhulu, ngokuqhelekileyo iRa1.6 ukuya kwiRa3.2. Uxinzelelo oluphezulu kufuneka lube sezantsi uburhabaxa.

Ukutywinwa koxinzelelo oluphezulu, ukwenzela ukuba isitywina sikhutshwe ngaphandle kwesithuba kwaye sibangele ukusilela, isithuba kufuneka sibe sincinci. Ngoko ke, kuyimfuneko ukuqinisekisa ukunyanzeliswa kunye noburhabaxa bendawo yoqhagamshelwano kwicala eliphantsi loxinzelelo lwesitywina. I-flatness kufuneka ibe ngaphakathi kwe-0.05mm, kwaye uburhabaxa kufuneka bube ngaphakathi kwe-Ra1.6.

Kwangaxeshanye, ekubeni itywina i-O-ring ixhomekeke kuxinzelelo lolwelo ukuhambisa uxinzelelo kwitywina le-O-ring kwaye emva koko kunxibelelwano lweenyosi, kufuneka kubekho umsantsa othile kwicala loxinzelelo oluphezulu lwetywina, oluyiyo. ngokubanzi phakathi kwe-0 kunye ne-0.25 mm.