Imishini yensimbi ye-ptfe efakwe umugqa ngokuvamile yenziwa ngembobo yokukhipha, imbobo yokuphakelayo, isibuko sokubuka, njll., kodwa indlela yokusebenzisa ngempumelelo lolu hlobo lwembobo yepayipi emgqeni ophambanayo wekhanda eliyinkimbinkimbi, yiqiniso, impendulo yethu iwukushisela, khona-ke indlela yokushisela? Indlela yokulawula izinga lokushisa lokushisela i-ptfe?Ngezansi sitshela ngamunye ngamunye.
Imishini yensimbi ye-ptfe efakwe umugqa ngokuvamile yenziwa ngembobo yokukhipha, imbobo yokuphakelayo, isibuko sokubuka, njll., kodwa indlela yokusebenzisa ngempumelelo lolu hlobo lwembobo yepayipi emgqeni ophambanayo wekhanda eliyinkimbinkimbi, yiqiniso, impendulo yethu iwukushisela, khona-ke indlela yokushisela? Indlela yokulawula izinga lokushisa lokushisela i-ptfe?Ngezansi sitshela ngamunye ngamunye.
1, ptfe ikhanda ipayipi umlomo ukukhiqizwa
I-PTFE ipayipi yokushisela ekhanda elivala uphawu okokuqala nje, kufanele senze i-PTFE yokuvala umlomo umlomo wombhobho, ngokusho kobukhulu bekhanda lensimbi lobubanzi benobhozo futhi ngokusho kwengxenye ethile ngokusebenzisa inqubo yokubumba impushana yokukhiqiza umlomo wombhobho, amahora angu-8 we-sintered ngaphansi kwe-380 plus noma khipha 5 degrees Celsius, ngemva kokuphothulwa sintering umlomo wombhobho nge lathe imoto usayizi kwesokudla, ukuze ukuhalalisela PTFE tube ngalesi sikhathi usuqedile.
2, ukuvulwa kwekhanda le-ptfe
Faka ikhanda elikhishiwe ekhanda lensimbi, futhi usebenzise isimiso sokudlulisa ukukhanya ukuze uvule kahle ikhanda, unake ikhanda le-ptfe kufanele lihambisane nekhanda lensimbi, noma imishini yokugcina ijwayele ukuqhuma, ukuphuka nezinye izingozi ezingase zibe khona. .
3, ptfe ipayipi umlomo Welding
Ngezinyathelo ezimbili zokuqala, singakwazi ukwenza ukushisela kwe-PTFE.Lapha siyazi ukuthi kunezindlela ezimbili zokushisela (i-hot pressure welding kanye ne-hot air welding).Sizobachaza ngamunye ngamunye.
(1) i-hot pressure welding
Ngaphambi kokushiswa kwengcindezi eshisayo kufanele sazi ulwazi oludingekayo lwethiyori, i-hot pressure welding iwuhlobo lwe-welding eshisayo, inikeze ukushisa okwanele nokucindezela okwanele.Lapha, kufanele siqinisekise ukuthi izinga lokushisa le-welding interface kufanele lifinyelele ku-673.15k futhi ingcindezi ifinyelela ku-1-2mpa .Ngakho-ke, ukuze siqinisekise ukushisela, sidinga ukwenza isikhunta esihambisanayo ukuze siqinisekise ukuphothulwa ngempumelelo kwe-thermal pressure welding.Lapho konke kwenziwa, ifilimu ye-FEP ingafakwa ngokucindezela nokushisa isikhombimsebenzisi phakathi kwe-nozzle nekhanda.
(2) ukushisela umoya oshisayo
Ngokufanayo, i-ptfe air hot welding iwuhlobo lwe-welding eshisayo, elula kakhulu kune-hot pressure welding futhi ayidingi isikhunta esiningi.Ngemva kokubeka umlomo wepayipi, induku yokushisela ye-PFA kanye nesibhamu sokushisela somoya oshisayo esingaphezu kuka-713K sisetshenziselwa ukushisa i-PFA kuqala bese siyibeka kumthungo wokushisela ukuze kushiselwe ngokuqhubekayo.
Qaphela: kungakhathaliseki ukuthi ukushisa kwengcindezi eshisayo noma ukushisa kwe-welding emoyeni oshisayo kuzoba ngaphezu kwendawo yokuncibilika ye-ptfe, i-ptfe ingenzeka ngaphansi kokuqhekeka kwezinga lokushisa, ikhiqiza inqubo ye-pyrolysis perfluorinated isobutylene namanye amagesi anobuthi, ngakho ukushisela kufanele kube indawo yokungena komoya, lapho isimo singakuvumeli okufana nokushisela ithangi le-fluorine lining emine ekukhiqizeni kufanele kusebenzise isiqiniseko sokugeleza komoya kwabalandeli kanye nokugqoka imaskhi yegesi ukuze kuqinisekiswe ukuphepha ngesikhathi esifanayo.
Isikhathi sokuthumela: Jun-24-2019