Izici zePTFE umshini wokubumba.
1. Umshini wokubumba othomathikhi we-Teflonumshini wokubumba we-tetrafluoro, ukusebenza okuhlakaniphile, amahora angama-24 ukukhiqizwa okuqhubekayo kungafinyelelwa.
2. Ukulayisha okuzenzakalelayo, izinga lokushisa likawoyela, izinto ezibonakalayo, ukuqapha kwesikhathi sangempela sokusebenza komnyango ngamunye wemishini, ukusebenza kokuqapha okukude kuyatholakala, futhi ipuleti legceke lengalo lomshini libekwe kahle.
3. Ingenza ngokuzenzakalelayo ibha, ipayipi, izingxenye ezibunjiwe, ifakwe izinhlobonhlobo ezihlukahlukene zokubunjwa, umshini owodwa onesikhunta eziningi kanye nezingxenye eziningi, ipayipi ingafinyelela ubukhulu bodonga lwe-2mm.iphutha lokuphakama lezingxenye ezibunjiwe lingalawulwa ku-± 0.02mm.
Isingeniso somkhiqizo.
I-Polytetrafluoroethylene ngokuvamile yaziwa ngokuthi i-tetrafluoro, i-Teflon, i-King Plastic, i-Teflon, futhi umshini wokubumba ungumshini okhethekile wokubumba imikhiqizo ye-polytetrafluoroethylene.Impahla eluhlaza ye-PTFE powder iyabunjwa, ifudunyezwe futhi ipholiswe ngochungechunge lokucutshungulwa yimishini ukuze kukhiqizwe imikhiqizo ebunjiwe ehambisana nokucaciswa okuhlukahlukene.Ngokuya ngesicelo, ukucaciswa, izithako, izidingo zomsebenzisi nezinye izici ezihlobene, ukucaciswa okuhlukile komshini wokubumba kungaklanywa futhi kukhiqizwe.Imikhiqizo ye-PTFE ekhiqizwayo isetshenziswa kabanzi kumakhemikhali, i-aerospace, imishini yemishini, ukushintshaniswa kokushisa neminye imikhakha.
Inqubo yokubumba ye-ptfe
Inqubo yokubumba i-ptfe iyindlela evame ukusetshenziswa kakhulu.Ukubumba kwe-PTFE kungasetshenziswa ukucubungula amapuleti, izinduku, imikhono, amateyipu, izindandatho zokuvala, ama-diaphragm, nezingxenye ezinensimbi.
Indlela yokubumba ye-ptfe ngokuyisisekelo iqukethe izinyathelo ezine: ukuxuba, ukwenza kusengaphambili, ukupholisa, nokupholisa.I-Preforming inqubo yokwengeza i-ptfe powder ngokulinganayo esikhunjeni bese uyicindezela ibe yi-preform eminyene (okungukuthi, engenalutho) ekamelweni lokushisa;i-sintering inqubo yokushisisa i-preform ngaphezu kwendawo yokuncibilika futhi ukupholisa kuyinqubo yokwehlisa izinga lokushisa le-sintering ekamelweni lokushisa.
Enye i-ptfe icindezelwa kanye kanye ngaphezu kwezinga lokushisa lendawo yokuncibilika, lesi sikhunta esibumbayo, esibizwa ngokuthi isikhunta sokucindezela esishisayo, nalesi sikhunta esihambisanayo se-PTFE sibizwa ngokuthi isikhunta sokucindezela okubandayo.
Lapho i-ptfe ibumba kufanele inake isilinganiso sokucindezela (i-Yin PTFE ye-4-6) kanye nokuncipha kokubumba (ngokuvamile i-PTFE ye-2.6-4.5%) kumthelela womkhiqizo.
Izinto zokusetshenziswa ezinhle kakhulu ezineresin ye-polymerization yokumiswa, usayizi wezinhlayiyana wama-microns angama-20-500 wempushana exegayo ingcono kakhulu.Inqubo yokucindezela kufanele "incishiswe", ingcindezi yangaphambilini engu-17-35 MPa, ibambe isikhathi ngokuya ngobukhulu bendawo engenalutho, njengokuthi i-100 mm engenalutho engenalutho, kufanele ibambe ingcindezi imizuzu engu-15.
Isikhathi sokuthumela: Mar-16-2022