Ipayipi lensimbi elivunguzayo tukulawulwa kwe-emperature

I-Spiral steel pipe welding lokushisa ithinteka kakhulu amandla okushisa e-eddy aphezulu-imvamisa, amandla okushisa amanje e-Eddy athinteka kakhulu yi-frequency, amandla kanye ne-thermal Eddy yamanje yokuvusa imvamisa ilingana nesikwele;kodwa futhi nge-voltage yamanje ye-excitation frequency excitation voltage, yamanje kanye ne-capacitance, inductance.

Lapho ukuntuleka kokufakwa kokushisa, umkhawulo we-weld ushiswa kuze kufike ekushiseni okungaphansi kwe-welding, isakhiwo sensimbi sihlala siqinile, ukwakheka kokuhlanganisa okungaphelele noma ukungena;anele lapho ukushisa okokufaka, weld onqenqemeni phezu eshisiwe soldering lokushisa, okuholela ashile noma droplet, ukuze ukushisela ukwakheka Imihume.

Ukushisela i-multilayer ye-spiral welded steel pipe kuphinde kucubungule izinga lokushisa le-inter-layer ukulawula izinga lokupholisa eduze nendawo yokushisela.Izinga lokushisa le-interface ne-preheat lokushisa ngokuvamile liyefana.Ngaphansi gwema ukushisa ngokweqile eduze kwendawo yomthungo phakathi kwesendlalelo esiphezulu kuvimbela izinga lokushisa elibandayo lokuqhekeka ngesikhathi sokushisela ama-multi-pass.Ngemuva kokwelashwa kokushisa kanye nokwakhiwa kwepayipi lokushisa kwe-welding ngokuvamile akwenziwa ngemva kokwelashwa kokushisa ngemuva kokushisa nokushisa.Kodwa ekwakhiweni esifundeni se-alpine, lapho ukulawulwa kokushisa kwe-inter-preheat kanye ne-interface kunzima ukudlala indima enkulu, kuyadingeka ukuthatha amalunga athile ngemuva kokushisa kwe-welding kanye nezinyathelo zokwelapha ukushisa.

Inqubo yokufaka ipayipi lensimbi ye-Spiral

Ipayipi elivunguzayo lizosebenza endaweni, okokuqala ngokuya ngepayipi lokuphuma kwemishini nokufakwa endaweni, futhi endaweni kuzoba ubude obuqondile bepayipi ngalinye lokulinganisa lihle, phawula ubukhulu obuthile kanye nendawo yokuhlela ukuze kube lula ukulahlwa kwesixhumi esibonakalayo, ngaphansi ukusetshenziswa kweshubhu le-crane, ishubhu eliphansi ngesikhathi sokuphakamisa isihlilingi senayiloni ukuvikela ukuvala amapayipi.

1:lungisa umlomo

Ukulungisa amachweba agxile ekucubungulweni kwepayipi lasefekthri kuyaqedwa, ukuze kuqinisekiswe ikhwalithi yokushisela, ngaphambi kokuthi ukushisela kuhlolwe kabanzi, ukulungiswa, ukwenza ukuphela kwepayipi, i-bevel angle, umphetho ogqamile, ukujikeleza, njll., kuhambisana nozakwabo. ezidingweni usayizi ngokuhlanganyela, isidingo ipayipi ngabanye kwenziwe emkhakheni beveling inqubo, ukusetshenziswa igesi Welding ukusika, asuse slag bese usebenzisa isondo ophucuziwe bushelelezi.

Izinqubo zokusebenza ezihambisanayo: Hlola usayizi wesixhumi esibonakalayo→i-breech ecacile→nquma futhi ulungise isikhundla sensimbi ipayipi longitudinal welds wanyakaza→i-conduit yokuqala ebukeka iqondile ozakwabo balungisa ubukhulu begebe→ozakwabo bekhebula lepayipi bayalingana bebukeka beqondile→ukushisela indawo

2: Welding

I-Interface welding isebenzisa i-arc welding, iphinde isekele, yasinda izikhathi ezimbili, futhi isikhathi ngasinye lapho umthungo wokushisela usuqediwe, iphuzu ngalinye lokushisela le-arc lizonyakaziswa.Ukulungisa amapayipi okushisela amapayipi kufanele andulelwe ngomlomo, i-slag, ipayipi le-bevel angle ekupheleni kuya ekupheleni kobuso, unqenqema olungenalutho, igebe kufanele lihambisane nokucaciswa;isiqeshana asikwazi ukusiza strip Welding noma Ukushisa nozakwabo igebe ukuncipha igebe Welding.Okubambisana kufanele kushaywe ngodonga lwangaphakathi, kube nerula elide elingu-300mm ukuze lizungeze udonga lwangaphakathi olugudla isixhumi esibonakalayo, imbobo engalungile ivumela ukuhlola okuyingxenye kufanele kube izikhathi ezingu-0.2 umehluko phakathi kogqinsi lodonga, futhi kungabi ngaphezu kuka-2mm.