Kodi mungatsimikizire bwanji kusindikizidwa kodalirika kwa machubu okwera kwambiri okhala ndi zisindikizo za O-ring?

O-ring

Zisindikizo zonse za SAE flange ndi O-ring end zisindikizo zimasindikizidwa ndi O-rings. Zopangira izi nthawi zambiri zimagwiritsidwa ntchito pamapulogalamu omwe ali ndi kuthamanga kwambiri komanso zodalirika zamakina ndizokwera kwambiri. Nthawi zogwiritsira ntchito izi nthawi zambiri zimakhala zosindikizira za static pressure. Kodi tingatsimikizire bwanji kudalirika kwa zisindikizo za O-ring

Mfundo yosindikiza ya O-rings yomwe imagwiritsidwa ntchito posindikiza static pressure

O-ring itatha kuikidwa muzitsulo zosindikizira, gawo lake lodutsa limakhudzidwa ndi kupanikizika, zomwe zimapangitsa kuti pakhale kusintha kwa elasticity, ndipo kumapanga kukhudzana koyambirira kwa P0 pamtunda. Ngakhale popanda kukakamiza kwapakatikati kapena kupanikizika pang'ono, mphete ya O imatha kukwaniritsa kusindikiza kudalira mphamvu yake yotanuka. Pamene patsekeke wodzazidwa ndi pressurized sing'anga, pansi pa zochita za sing'anga kuthamanga, ndi O-ring amapita ku otsika-zipatala mbali, ndi zotanuka ake mowonjezereka, kudzaza ndi kutseka kusiyana. Pansi pa kupanikizika kwapakatikati, kukakamiza kwa Pp komwe kumatumizidwa kumalo ochitirapo kanthu ndi mphete ya O kumawonjezera kuchitapo kanthu pakulumikizana kwa gulu losindikiza mpaka Pm.

Kupanikizika koyambirira pa nthawi ya kukhazikitsa koyamba

Kuthamanga kwapakati kumafalikira kudzera mu O-ring.

Mapangidwe a kukhudzana kukakamiza

Kutengera mawonekedwe osindikizira a O-ring chubu mwachitsanzo, kambiranani zomwe zimakhudza kusindikiza kwa chubu.

Choyamba, chisindikizocho chiyenera kukhala ndi kuchuluka kwa kuponderezedwa kwa unsembe. Popanga kukula kwa chisindikizo cha O-ring ndi poyambira, kuponderezana koyenera kuyenera kuganiziridwa. Miyeso yosindikizira ya O-ring ndi kukula kwake kwa groove yatchulidwa kale pamiyeso, kotero mutha kusankha molingana ndi miyezo.

Pamwamba pa nkhokwe yosindikizira sikuyenera kukhala yayikulu kwambiri, nthawi zambiri Ra1.6 mpaka Ra3.2. Kuthamanga kwapamwamba m'pamenenso kutsika roughness kuyenera kukhala.

Kuti asindikize mwamphamvu kwambiri, kuti chisindikizocho chisatuluke kunja kwa mpata ndikupangitsa kulephera, kusiyana kwake kuyenera kukhala kocheperako. Choncho, m'pofunika kuonetsetsa kuti flatness ndi roughness wa kukhudzana pamwamba pa otsika kukakamiza chisindikizo. Kuphwanyidwa kuyenera kukhala mkati mwa 0.05mm, ndipo roughness iyenera kukhala mkati mwa Ra1.6.

Pa nthawi yomweyi, popeza chisindikizo cha O-ring chimadalira mphamvu yamadzimadzi kuti ipereke mphamvu ku chisindikizo cha O-ring ndi kukhudzana ndi njuchi, payenera kukhala kusiyana kwina pa mbali ya chisindikizo chapamwamba, chomwe chiri. kawirikawiri pakati pa 0 ndi 0.25 mm.