Inhloso yokwelashwa kokushisa okukhanyayo okuku-inthanethi kwamapayipi ashiselwe insimbi engagqwali: enye iwukuqeda ukucindezeleka okusalayo okukhiqizwa phakathi nenqubo ebandayo yokusebenza yokugoqa umugqa wensimbi engagqwali ube yisimo se-tubular nangesikhathi senqubo yokushisela;Kuyinqubo ebalulekile yokuqinisekisa ukusebenza kwamapayipi ashiselwe ensimbi engagqwali kusisombululo esiqinile abe yi-austenite bese aphole ngokushesha ukuze kuvinjwe i-austenite emvula noma ukuguqulwa kwesigaba phakathi nenqubo yokupholisa.
Izici Ezithinta Ukwelashwa Kokushisa Okukhanyayo Ku-inthanethi
1. Ithonya lokushisa lokushisa lokushisa
Ukwelashwa kwesixazululo kuyindlela ephumelela kakhulu yokwelapha yokuthambisa insimbi engagqwali ye-austenitic.Ipayipi elishiselwe ngemuva kokwelashwa kwesixazululo lingathola ukumelana nokugqwala okungcono kakhulu, amandla aphansi kanye nepulasitiki engcono.Kungale ndlela kuphela engakwazi ukuhlangabezana nezidingo zamapayipi ezimboni njengamapayipi e-condenser namapayipi amakhemikhali.
Ngokwezidingo ezijwayelekile zamapayipi ensimbi engagqwali ama-condensers, izinga lokushisa lokwelashwa kwamapayipi ashiselwe insimbi engenasici ye-austenitic kufanele lifinyelele ku-1050 ~ 1150 ℃.Ngesikhathi esifanayo, kuyadingeka futhi ukuthi izindawo zangaphakathi nangaphandle zamapayipi ashiselwe ngemva kokwelashwa kokushisa zimhlophe futhi zibushelelezi, ngaphandle kombala we-oxidation.Ngakho-ke, kuyadingeka ukuthi kuqine ngesikhathi sokushisa nokupholisa amapayipi ashiselwe.Ukulawula uhla lokushintsha kwezinga lokushisa (emzimbeni wesithando somlilo), ipayipi lensimbi kufanele libe sesimweni esihle sokuvikela, futhi indlela evamile yokucisha amanzi ayikwazi ukusetshenziselwa ukuvimbela ipayipi lensimbi lokushisa eliphezulu ekuboleni umoya-mpilo kanye ne-oxidizing ebusweni bepayipi. .Ngokuvamile, izinga lokushisa lokwelashwa kwesisombululo se-austenitic insimbi engagqwali yi-1050 ~ 1150 ℃.Uma lokhu kushisa kungafinyelelwanga, isakhiwo sangaphakathi se-austenitic insimbi engagqwali asizinzile, futhi i-carbides izodlula, okuholela ekubeni ubuso bepayipi lensimbi lingafinyeleli umbala ogqamile, futhi ubuso bepayipi buzovela bumnyama.
2. Umthelela wokuvikela igesi
Ukwelashwa kokushisa kwepayipi elishiselwe insimbi engagqwali kusebenzisa isithando somlilo esiqhubekayo esingena-oxidation esinegesi evikelayo, esingathola indawo ekhanyayo ngaphandle kwe-oxidation, ngaleyo ndlela kuqede inqubo yendabuko yokukhetha.Amagesi avikelayo angasetshenziswa yi-hydrogen ehlanzekile kakhulu, i-ammonia ebolile namanye amagesi avikelayo.Njengoba ipayipi elishiselwe insimbi engagqwali liqukethe i-chromium, akunakwenzeka ukwenza ukwelashwa okushisa okukhanyayo kugesi evamile yokuvikela (njengegesi yokubola kwe-hydrocarbon, njll.), futhi kungcono kakhulu ukuyenza endaweni ye-vacuum.Kodwa-ke, ekwelapheni ukushisa kwamapayipi ashiselwe ensimbi engagqwali, indawo ye-vacuum ayikwazi ukusetshenziswa, futhi igesi ye-inert (njenge-argon) ingasetshenziswa.Nakuba ukusetshenziswa kwegesi ye-inert njengegesi evikelayo yokwelashwa kokushisa kwamapayipi ahlanganisiwe we-austenitic steel stainless stainless steel anezici zokungahlanganyeli ekuphenduleni kwamakhemikhali, ukusebenza okulula, okuphephile futhi okuthembekile, kodwa akunayo izakhiwo zokunciphisa, ukuze umphumela wokushisa ukushisa. ayikwazi ukuhlangabezana nezidingo zekhwalithi yokwelashwa kokushisa okukhanyayo.Silver gray.Ngaphezu kwalokho, izindleko zegesi ye-inert ziphezulu futhi ayifanele ukukhiqizwa okukhulu.Ngokusho kocwaningo lwenqubo yokwelapha ukushisa kanye nokuhlaziywa nokuhlolwa okuphindaphindiwe ngekhwalithi yepayipi yensimbi engagqwali eshiselwe ngemva kokwelashwa kokushisa okukhanyayo, indlela yokuqala usebenzisa igesi ye-inert ukuhlanza umoya esithandweni sokushisa ukushisa, bese ufaka esikhundleni igesi ye-inert ene-hydrogen, ifakazele ukuthi ukwelashwa kokushisa okukhanyayo kufinyelelwe.Izimfuneko zekhwalithi. I-Hangao Tech (SEKO Machinery) ukugcinwa kokushisa okukhanyayo umshini wokwelapha ukushisa kwe-annealing iyimishini yohlobo lwe-inthanethi, eklanyelwe ngokukhethekile imigqa yokukhiqiza yamapayipi ensimbi engagqwali ashiselwe.
3. Ithonya lokushisa lokupholisa
Ngemuva kokushisisa ipayipi elishiselwe insimbi engagqwali libe ngu-1050 ~ 1150 ℃, ipayipi elishiselwe kufanele lehlise ngokushesha.kufanele yehliselwe ezingeni lokushisa elingafaki i-oxidize.Ngakho-ke, izinga lokushisa lokupholisa libaluleke kakhulu, futhi izinga lokushisa kufanele lilawulwe ngokuqinile.
(Isithando somlilo esikhanyayo esiku-inthanethi se-Laser Welding Tube Mill Line)
4. Ithonya lendawo yepayipi elishiselwe
Isimo sobuso bepayipi elihlanganisiwe lensimbi engagqwali ngaphambi kokungena esithandweni sinethonya elikhulu ekwelashweni kokushisa okukhanyayo.Uma ingaphezulu lepayipi elishiselwe lingcoliswe umswakama, amafutha kanye nokunye ukungcola esithandweni, umbala okhanyayo we-oxide oluhlaza uzovela ebusweni bepayipi elishiselwe ngemuva kokwelashwa kokushisa okukhanyayo.Ngakho-ke, ngaphambi kokungena esithandweni sokushisa ukushisa, indawo engaphezulu yepayipi yensimbi engenasici kufanele ihlanzeke kakhulu, futhi ubuso bepayipi elihlanganisiwe akufanele buvunyelwe ukuba nomswakama.Uma kunesidingo, ingamiswa ku-dryer kuqala, bese ifakwa esithandweni.
5. Umthelela Wokuvala Ukushisa Kwesithando Somlilo
Isithando somlilo sokushisa kufanele sivalwe futhi sihlukaniswe emoyeni wangaphandle.Ikakhulukazi indawo lapho ipayipi elihlanganisiwe lingena khona emzimbeni wesithando somlilo kanye nendawo lapho ipayipi elihlanganisiwe liphuma khona emzimbeni wesithando somlilo, indandatho yokufaka uphawu kulezi zindawo ilula kakhulu ukugqoka, ngakho-ke kufanele ihlolwe njalo futhi ishintshwe ngesikhathi.Ukuze uvimbele ukuvuza okuncane, igesi evikelayo esithandweni kufanele igcine ukucindezela okuthile okuhle.Uma kuyigesi evikela i-hydrogen, ngokuvamile kuyadingeka ukuthi ibe nkulu kunomfutho womoya ojwayelekile.
6. Ithonya lezinye izici ekwelapheni ukushisa okukhanyayo
Ngesikhathi senqubo yokusebenza, kuyadingeka ukuqinisekisa ukuthi i-welding iyaqhubeka futhi izinzile.Uma kunezimbobo noma ama-seams epayipi elihlanganisiwe, umsebenzi wesithando somlilo wokushisa kufanele umiswe, ngaphandle kwalokho ipayipi elihlanganisiwe lingase liqhunyiswe esithandweni.Ngaphezu kwalokho, umphumela we-welding awulungile, futhi umoya noma umswakama ofuthwe emgodini we-welding uzobhubhisa umkhathi ovikelayo esithandweni futhi uthinte umphumela wokushisa okhanyayo.
