Yiziphi izinkinga okufanele zinakwe ekukhethweni kwezimpawu zenjoloba
Ukukhethwa kwezimpawu zenjoloba kufanele kucabangele izimo zokusebenza, ukuze ukhethe uhlobo olufanele lwezimpawu kanye nezinto zokuvala, ukufakwa kwesakhiwo.
Ukukhethwa kwezimpawu zenjoloba kudinga ukucabangela izimo zokusebenza ngokuvamile zifaka: izinga lokushisa, ukucindezela, okuphakathi.Okunye kudinga ukuhlanganiswa nezici zemishini ngokwayo ukucabangela ukukhethwa kwezimpawu.
Mayelana nezinga lokushisa, okufana nokuvala impahla ye-NBR impahla yokusebenza izinga lokushisa ngokuvamile lingama -40 ~ +120 ℃.Kungaphezu kuka-120 ℃ ukucabangela ukusetshenziswa kwe-FKM, ngisho ne-PTFE impahla, izinga lokushisa eliphansi liyivelakancane, ngokuvamile uma sikhuluma esimweni sika -20 ~ -40 ℃ ukucabangela ukusetshenziswa kwe-NBR ekwazi ukumelana nokubanda, impahla ye-NBR ngokuvamile iphansi. izinga lokushisa imvelo kuzoholela ukuqina impahla, okuholela ukuvuza, ezifana ujantshi wesitimela enyakatho yobusika ngokuvamile avele izinkinga ezinjalo.
Ngokuqondene nokucindezela, kuthinta uhlobo lwezimpawu okufanele zikhethwe.Ngokuvamile, ukusetshenziswa kwezimpawu zenjoloba noma ze-PU zokucindezela okuphansi nokucindezela okuphakathi ngeke kube nenkinga enkulu kakhulu.Kodwa ukucabangela inkinga yokucindezela komthelela, njengemishini yokwakha ekuqaleni, vala lapho ingcindezi yomthelela wayo inkulu kakhulu kunengcindezi evamile yokusebenza, ngakho ngokuvamile kuzokhetha ingcindezi efika ku-70MPA nomthelela wokulwa nokuminyanisa i-HBY noma i-SPGW njengophawu oluyinhloko. .Izimpawu ezihlanganisiwe ze-PTFE nazo ziyinketho evamile.
Inkinga ephakathi ilula.Qaphela nje ezinye izinkinga ezincane ezikhethekile, njenge-cylinder yemboni ye-metallurgical ngokuvamile isebenzisa amanzi-glycol kanye ne-phosphate hydraulic fluids.Ngezinye izikhathi, nakuba izinga lokushisa elisebenzayo lingekho phezulu, kodwa ukukhethwa kwezinto zokuvala uphawu kufanele kuqaphe kakhulu, uwoyela we-hydraulic usetshenziswa lapho owokugcina noma i-FKM.
Ukukhethwa kwezimpawu kubaluleke kakhulu, noma kufanele kuhlanganiswe nesimo semishini ngokwayo ukukhetha.
Isikhathi sokuthumela: Jan-05-2023
