Ukukhethwa kwezinto zokutywina kwivalve yebhola kubalulekile ekusebenzeni kwayo ngempumelelo.Kwesi sithuba, siza kujonga ezinye zeempawu eziphambili kwiinketho ezintandathu ezisetyenziswa ngokuqhelekileyo zokutywinwa kwepolymer kwiivalvu zebhola.
Nazi ezinye iiposti ezongezelelweyo kwiZitulo zePolymer kunye nezisombululo zokutywina:
- Izihlalo zeValve yeBhola - Iinketho ezi-9 zokuthenga eziBalulekileyo
- Ubuchwephesha be-EMC obukwinqanaba eliphezulu leZisombululo zokutywinwa koMsebenzi
- I-PTFE Rotary Lip Seals – 6 Abakhuphisana nabo abafuni ukuba wazi!
Izinto ezingundoqo #1:PTFE enyulu
IVirgin PTFE (ipolymer yegama lorhwebo) ifanelekile njengesixhobo sokutywina sevalve yebhola kuxinzelelo olungaphantsi kwe-5 ksi kunye namaqondo obushushu phakathi kwe-20 F kunye ne-400 F;nangona kunjalo, ukusebenza kwayo kobushushu kuxhomekeke kuxinzelelo.Ukuthetha ngoxinzelelo, i-PTFE ayinciphisi kakuhle emva koxinzelelo.Qaphela ukuba i-polymer ayisebenzi kakuhle xa iphantsi kokutshintsha kweqondo lokushisa ngaphezu kwe-167 F. Enye yamandla ayo amakhulu kukumelana neekhemikhali, ukuba kufutshane nokunganyibiliki;amanye amandla kukukhuhlana okuphantsi kakhulu.Ikwayakwazi ukumelana nomlilo.
Izinto ezingundoqo #2:Iglasi yaQiniswa PTFE
I-PTFE eyomeleziweyo njengoko isetyenziswa kwizitywina zevalvu yebhola iqhele ukuba yi-15% yefiber yeglasi, inyusa ubushushu kunye noxinzelelo olufumanekayo nge-PTFE enyulu.Njengepolima engaqiniswanga, i-PTFE yeglasi eyomeleziweyo isenokumelana neekhemikhali ezilungileyo kakhulu ngaphandle kwee-caustics ezishushu kunye ne-hydroflourics.Nayo, ayinyangeki emlilweni kwaye ine-friction ephantsi, nangona ingekho phantsi njenge-PTFE enyulu.
Izinto ezingundoqo #3:I-PTFE eQinisa iStainless Steel
Kukho enye indlela ye-PTFE eyomeleziweyo ngamanye amaxesha esetyenziswa kwiitywina zevalve yebhola: intsimbi engatyiwayo eyomeleziweyo ye-PTFE.Esi sitywina esihlanganisiweyo senziwe nge-50% ye-polymer kunye ne-50% engumgubo we-316 yensimbi engenasici.Uluhlu lwayo lobushushu luyi -20 F ukuya kwi-550 F (ingaphezulu kancinane kune-PTFE enyulu) kwaye inamandla oxinzelelo oluphezulu kunokuba yintombi enyulu okanye ifayibha yeglasi eyomeleziweyo yePTFE.Nayo, nayo iyamelana nomlilo, nangona kunjalo i-coefficient yayo yokukhuhlana iphezulu kune-PTFE.
Izinto ezingundoqo #4:PEEK
I-PEEK lukhetho xa iimfuno zilele ngaphandle koluhlu lobushushu be-PTFE.I-PEEK isebenza kakuhle kwiindawo ezinamaqondo obushushu aphakathi kwe -70 F ukuya kuma-600 F, kwaye ayichatshazelwa kukuvezwa ngokuqhubekayo kumphunga kunye namanzi ashushu.Yomelele kunepolymer, kodwa inzima.Eyona nto isemva kwayo, ngaphandle kokuqina kwayo, kukuziphatha kwayo brittle kumaqondo obushushu asezantsi.
Izinto ezingundoqo #5:UMHW Polyethylene
I-UHMW Polyethylene ibonakala ilolona khetho kwizicelo ezikhethekileyo, kubandakanywa nezo apho kuya kuba sesichengeni esisezantsi ukuya kweliphakathi.Uxinzelelo lwayo loxinzelelo luyi-1.5 ksi kunye noluhlu lweqondo lokushisa -70 F ukuya ku-200 F 1500 psi -57C ukuya kwi-93C.I-UHMW Polyethylene ikwanayo noxhathiso oluhle kakhulu lwe-abrasion.
Izinto ezingundoqo #6:I-Chlorinated Polyether
I-Chlorinated polyether ngamanye amaxesha isetyenziswa njengesixhobo sotywino lwevalve yebhola, esebenza kumaqondo obushushu ukuya kuthi ga kwi-257 F. Isebenza kakuhle phambi kwe-acids kunye ne-solvents ukuba ukuthambisa kunokunyamezela, kwaye kuchasene neekhemikhali ezingaphezu kwama-300.Ayirhubuluzi, kwaye ayifuni ukufunxa amanzi.
Amatywina aqhubeleka nokuvela:
Imathiriyeli yokutywina yintsimi ehlala iguquka, kodwa ezi zixhobo zintandathu zibonakala ngathi ziphambili kukhuphiswano lokutywinwa kwevalve yebhola ye-thermoplastic.Iimpawu zabo eziphambili zibonakala kuxinzelelo kunye nokusebenza kweqondo lokushisa, ukukhuhlana okuphantsi, ukuchasana kweekhemikhali.
Iithegi:ipolymer ptfe,uhmw,izitywina zevalve yebhola
Ixesha lokuposa: Jul-10-2018