Insimbi ipayipiukuthuthukiswa kobuchwepheshe bokukhiqiza kwaqala ngokwanda kokukhiqizwa kwamabhayisikili, ukuthuthukiswa kukawoyela ekuqaleni kwekhulu le-19, imikhumbi emibili yezimpi zomhlaba, ama-boilers, ukukhiqizwa kwezindiza, ngemva kwempi yesibili yokukhiqiza ubhayela wamandla ashisayo, imboni futhi ngenxa yalokho ukuthuthukiswa kokumba uwoyela negesi kanye ezokuthutha, ukushayela ngempumelelo imboni yepayipi yensimbi ngaphakathi kokuthuthukiswa kwezinhlobo, isivuno kanye nekhwalithi. Ngokuvamile ipayipi lensimbi ngokuhambisana nendlela yomhlangano, ihlukaniswe yaba ipayipi lensimbi engenamthungo kanye nepayipi lensimbi elishiselwe izinhlobo ezimbili, manje ikakhulukazi ukwethula ipayipi lensimbi elihlanganisiwe.
Welded steel pipe wukuthi ashiselwe ipayipi lensimbi, ukukhiqizwa kwalo ukuthi ithubhu elingenalutho (ipuleti lensimbi nebhande lensimbi) ngokusakazwa kwezindlela zokwakha ukugoba nokugingqeka ekumisekeni kwe-cross-sectional oyifunayo kanye nosayizi weshubhu, futhi kanjalo. sebenzisa izindlela ezahlukene zokushisela ukushisela i-weld futhi uthole inqubo yepayipi yensimbi. Uma kuqhathaniswa nepayipi lensimbi elingenamthungo, ipayipi elihlanganisiwe linezici zokunemba okuphezulu, ikakhulukazi ukunemba kokuqina kodonga, imishini eyinhloko elula, umsebenzi omncane, ukusebenza okuqhubekayo ekukhiqizeni, ukukhiqizwa okuguquguqukayo, ububanzi bomkhiqizo womkhiqizo weyunithi ke kuqhubeke.
Inqubo yokukhiqiza amapayipi izohlukaniswa: SSAW (Spirally Submerged Arc Welding); I-LSAW (I-Longitudinous Arc Welding); Ukumelana nogesi Ukushisela (ERW) ezintathu.
I. inqubo yokuhlanganisa ipayipi lensimbi elivunguzayo icishe ihambe kanje
● Izinto zokusetshenziswa zepayipi lensimbi elivunguzayo yi-strip coil, i-welding wire kanye ne-flux.
● Ngaphambi kokwenza umucu ngemva kokulinganisa, ukusika, ukuhlela, ukuhlanzwa kwendawo, ukuthutha kanye nokucubungula ukugoba.
● Idivayisi yokulawula igebe lokushisela isetshenziswa ukuze kuqinisekiswe ukuthi igebe lokushisela liyahlangabezana nezidingo zokushisela, kanti futhi ububanzi bepayipi, unqenqema olunyakazayo kanye negebe lokushisela kulawulwa ngokuqinile.
● Ngemuva kokusika ipayipi elilodwa lensimbi, iqoqo ngalinye lepayipi lensimbi lekhanda lesithathu ukuze libambe uhlelo lokuhlola lokuqala oluqinile, hlola izakhiwo zemishini ye-weld, ukwakheka kwamakhemikhali, isimo sokuncibilika, ikhwalithi yendawo yepayipi yensimbi nangemva kokuhlolwa okungabhubhisi, qiniseka ukuthi ipayipi ukwenza inqubo ibe neziqu, ifakwa ngokusemthethweni emkhiqizweni.
Okubili, ipayipi lokushisela le-arc elinomthungo oqondile
Ipayipi elishiselwe i-arc elingaphansi komthungo oqondile (LSAW) ngokuvamile lithatha ipuleti njengempahla, ngenqubo ehlukene yokubunjwa, lamukela ukushisela kwe-arc okunezinhlangothi ezimbili kanye nokukhulisa ngemva kokushisela nezinye izinqubo zokwenza ipayipi elishiselwe.
Imishini eyinhloko umshini wokubumba, umshini wokugoba, umshini wokwakha, umshini wokushisela, umshini wokunweba bese uqhubeka. Phakathi naleso sikhathi, kukhona i-UO (UOE), i-RB (RBE), i-JCO (JCOE) bese iqhubeka. Ipuleti elingaphakathi kwesikhunta esakhayo licindezelwa kuqala libe yi-U shape, licindezelwe libe yi-O shape, ngakho-ke i-arc welding ye-arc yangaphakathi nangaphandle, i-welding ngokuvamile iphezulu noma ubude obuphelele bokunwetshwa (Ukunwetshwa) okubizwa ngokuthi ipayipi elishiselwe i-UOE, hhayi Ukwandisa okubizwa ngokuthi ipayipi elishiselwe i-UO. Ipuleti ligoqiwe Ukugoba okumise, bese kwenziwa ukushisela kwe-arc okungaphakathi nangaphandle. Ngemuva kokushisela, ububanzi buyishubhu eshiselwe i-RBE noma ishubhu elishiselwe i-RB ngaphandle kokunwetshwa. Ipuleti idalwe ngaphakathi kokuhleleka kohlobo lwe-JcO, futhi ngemuva kokushisela, ububanzi bunwetshwa kupayipi elihlanganisiwe le-JCOE noma ipayipi elihlanganisiwe le-JCO ngaphandle kokunwetshwa.
Okuthathu, okuqondile kwepayipi elishiselwe imvamisa ephezulu (i-RW) ukuthi ikhoyili egoqelwe eshisayo ngemuva komshini wokubumba, kusetshenziswa into kagesi kanye nomphumela oseduze we-high frequency current, ngakho-ke ukuhlaba kweshubhu kuyashiswa futhi kuncibilike, ngaphansi kwesenzo se-extrusion. i-roller pressure welding ukuze uthole ukukhiqizwa.
Isikhathi sokuthumela: Dec-20-2021