Evolution yeSeal Materials
Shanduko yezvigadzirwa zvechisimbiso zvakashanduka sezvo zvisimbiso zvaitarisana nezvinodiwa zvakanyanya.Zvinodiwa zvepakutanga zvaigona kuwanikwa uchishandisa yakarongedzwa hemp kana dehwe, asi sezvo izvo zvaidiwa zvakawedzera uye zvakanyanya kuomarara zvinhu zvitsva zvakatsvakwa.Izvi zvakakonzera kuunzwa kwemasikirwo erabha zvisimbiso, izvo zvakashanduka kuita elastomers, uye pakupedzisira engineering mapolymers sePTFE (Polytetrafluoroethylene).
Zvina zvezvinonyanyozivikanwa zvemazuva ano sarudzo dzeinotenderera shaft seal miromo ndeye nitrile rabha, polyacrylate, FKM, uye PTFE.Pazvishandiso izvi, zvitatu zvinonzi elastomers - nitrile rabha, polyacrylate rabha neFKM - uye imwe chete ndiyo polymer - PTFE.Ngationei kuti zvinhu izvi zvakamira sei.
Chinyorwa 1: Nitrile Rubber
Nitrile rabha inoenda nemazita akati wandei, kusanganisira acrylonitrile butadiene rubber, Buna-N, uye NBR.Chaizvoizvo ndeye synthetic rabha elastomer inopikisa zvakanyanya kune mamwe akakosha makemikari semafuta, mafuta ekuzora, uye mafuta.Kana ichienzaniswa nemamwe ma elastomer, inoita basa rakatanhamara rekuramba kusvibiswa uye kuratidzwa kuzuva nemamiriro ekunze.Zvine miganhu, kunyange zvakadaro.
Chinyorwa 2: Polyacrylate Rubber
Polyacrylate inoreva polyacrylate rubber uye dzimwe nguva inonzi ACM.Inopa zvirinani kupisa kupisa uye inoenderana neakakwira shaft kumhanya kupfuura nitrile rabha.Izvo zvakare zvakanaka mune mamwe hunyanzvi maapplication akadai semafuta ekuzora anosanganisira sarufa.Simba rayo rishoma uye kuramba kwemvura ndiwo maitiro ayo makuru ekumisa.
Chinyorwa 3: FKM (Fluoroelastomers)
Heino chokwadi chinonakidza: vanhu vanowanzo vhiringika nezve musiyano uripo pakati peFKM, FPM, neViton.Vese vari kutaura kune imwechete base zvinhu.Iro zita rekuti FKM rinowana midzi yaro muASTM kupatsanurwa kwefloelastomers, nepo FPM iri iyo DIN/ISO chidimbu.Viton ndiro zita rayo rekutengeserana, rine DuPont.Izvo zvimiro zveFKM zvakakurisa kupfuura izvo zvenitrile rabha kana polyacrylate rabha, zvese maererano nekushisa uye shaft kumhanya, asiwo makemikari kuramba.Ndiyo zvakare inodhura zvakanyanya pane matatu elastomers akurukurwa kusvika zvino.
Chinyorwa 4: PTFE (Polytetrafluoroethylene)
PTFE inonyanya kuzivikanwa nezita rayo rekutengesa, polymer (iri yeDuPont zvakare).PTFE inodarika kuita kwenitrile rabha, polyacrylate rabha, uye FKM maererano nekumhanya kweshaft, tembiricha, uye makemikari kuramba.Muchokwadi, is ine yakanakisa makemikari kuramba chero polymer kana elastomer pamwe neiyo yakaderera coefficient yekukwesha.
Mhedziso
Chati iri pazasi inoratidza kuti izvi zvina zvakajairwa zvisimbiso zvinhu zvinoungana sei kune imwe neimwe maererano nekumisikidza kwavo shaft kumhanya.PTFE inopenya kupfuura zvimwe, kunyangwe pakumhanya kweshaft inopfuura 30,000 rpm.Paunenge uchisarudza chisimbiso chinoda kurarama munzvimbo ine corro uye inonetsa nekumhanya kwakakwira, usatarise kupfuura PTFE.
Nguva yekutumira: May-08-2018