Ziziphi iingxaki ekufuneka ziqwalaselwe ekukhethweni kwezitywina zerabha
Ukukhethwa kweempawu zeerubha kufuneka kuthathelwe ingqalelo iimeko zokusebenza, ukwenzela ukuba ukhethe uhlobo oluchanekileyo lokutywinwa kunye nezixhobo zokutywina, isakhiwo sokufakela.
Ukukhethwa kwezitywina zerabha kufuneka kuqwalaselwe iimeko zokusebenza ngokubanzi zibandakanya: ukushisa, uxinzelelo, okuphakathi.Ezinye kufuneka zidibaniswe neempawu zezixhobo ngokwazo zokuqwalasela ukukhethwa kwezitywina.
Malunga neqondo lobushushu, elifana nokutywina imathiriyeli ye-NBR yokusebenza uluhlu lobushushu ngokubanzi -40 ~ +120℃.Kungaphezulu kwe-120 ℃ ukuqwalasela ukusetyenziswa kwe-FKM, nokuba yi-PTFE imathiriyeli, ubushushu obuphantsi bunqabile, kuthethwa ngokubanzi kwimeko ye -20 ~ -40 ℃ ukuqwalasela ukusetyenziswa kwe-NBR enganyangekiyo ebandayo, imathiriyeli ye-NBR ngokubanzi ephantsi. ubume beqondo lobushushu kuya kukhokelela ekubeni lukhuni imathiriyeli, okukhokelela ekuvuzeni, okufana nesiporo sikaloliwe kumantla ebusika zihlala zibonakala iingxaki ezinjalo.
Ngokuphathelele uxinzelelo, luchaphazela uhlobo lwezitywina ezikhethiweyo.Ngokuqhelekileyo, ukusetyenziswa kwerabha okanye i-PU izitywini zoxinzelelo oluphantsi kunye noxinzelelo oluphakathi aluyi kuba nengxaki enkulu kakhulu.Kodwa ukuqwalasela ingxaki yoxinzelelo lwempembelelo, njengoomatshini bokwakha ekuqaleni, vala xa uxinzelelo lwalo lwempembelelo lukhulu kakhulu kunoxinzelelo oluqhelekileyo lokusebenza, ngoko ke uya kukhetha uxinzelelo ukuya kuthi ga kwi-70MPA impembelelo yokuchasa i-HBY okanye i-SPGW njengetywina eliphambili. .Iitywina ezihlanganisiweyo ze-PTFE zikwayindlela eqhelekileyo.
Ingxaki ephakathi ilula.Qaphela nje iingxaki ezincinci ezikhethekileyo, ezifana ne-metallurgical industry cylinder zihlala zisebenzisa amanzi-glycol kunye ne-phosphate hydraulic fluids.Ngamanye amaxesha, nangona iqondo lokushisa elisebenzayo lingekho phezulu, kodwa ukukhethwa kwezinto zokutywinwa kufuneka kulumke kakhulu, ioli ye-hydraulic isetyenziswa xa i-FKM yokugqibela okanye i-FKM.
Ukukhethwa kwamatywina kubaluleke kakhulu, okanye kufuneka kudibaniswe nemeko yezixhobo ngokwayo ukukhetha.
Ixesha lokuposa: Jan-05-2023
