Kujwayelekile ukuthi amapayipi ensimbi ekhabhoni ashiselwe abe namabhamuza omoya endaweni yokushisela, ikakhulukazi izimbotshana zepayipi lensimbi engenamthungo ewububanzi obukhulu be-carbon azithinti nje kuphela ukuqina kwepayipi lokushisela futhi abangele ukuvuza kwepayipi, kodwa futhi abe indawo yokugqwala. kunciphisa kakhulu amandla nokuqina kwe-weld. . Izici ezibangela i-porosity ekushiseleni yilezi: umswakama, ukungcola, isikali se-oxide kanye namafayili e-iron ku-flux, izingxenye zokushisela nokuqina kwesembozo, izinga eliphezulu lepuleti lensimbi kanye nokwelashwa kwepuleti le-steel side, inqubo yokushisela kanye nepayipi lensimbi. inqubo yokwakha, njll. Ukwakheka kwe-Flux. Uma ukushisela kuqukethe inani elifanele le-CaF2 ne-SiO2, izosabela futhi imunce inani elikhulu le-H2, futhi ikhiqize i-HF ngokuzinza okuphezulu futhi engancibiliki ensimbi ewuketshezi, engavimbela ukwakheka kwezimbotshana ze-hydrogen.

Amabhamuza ayenzeka kakhulu phakathi nendawo yobuhlalu obushiselayo. Isizathu esiyinhloko ukuthi i-hydrogen isafihliwe ngaphakathi kwensimbi yokushisela ngendlela yamabhamuza. Ngakho-ke, isilinganiso sokuqeda lesi sici ukuqala ukususa ukugqwala, uwoyela, umswakama kanye nomswakama ocingweni lokushisela kanye ne-weld. nezinye izinto, ezilandelwa ukugeleza kufanele zomiswe kahle ukuze zisuse umswakama. Ngaphezu kwalokho, kuyasebenza futhi ukukhulisa okwamanje, ukunciphisa isivinini sokushisela, nokunciphisa izinga lokuqiniswa kwensimbi encibilikisiwe.

Ubukhulu bokunqwabelana kwe-flux ngokuvamile buyi-25-45mm. Ubukhulu bezinhlayiyana zesayizi ye-flux kanye ne-density encane kuthathwa njengenani eliphakeme, ngaphandle kwalokho inani elincane liyasetshenziswa; isivinini esiphezulu samanje nesiphansi se-welding sisetshenziselwa ukushuba kokuqoqwa, futhi inani elincane lisetshenziswa ngokuphambene nalokho. Lapho umswakama uphezulu, i-flux etholiwe kufanele yomiswe ngaphambi kokusetshenziswa. Ukuqhekeka kwesibabule (imifantu ebangelwa isulfure). Imifantu ebangelwa ama-sulfide ebhandeni lokuhlukanisa isibabule engena ensimbi yokushisela lapho eshisela amapuleti anamabhande okuhlukanisa isibabule aqinile (ikakhulukazi insimbi ebilayo). Isizathu salokhu ukuba khona kwe-hydrogen ku-iron sulfide nensimbi enephuzu elincibilikayo eliphansi endaweni yokuhlukanisa isibabule. Ngakho-ke, ukuze kuvinjwe lokhu ukuthi kungenzeki, kuyasebenza futhi ukusebenzisa insimbi ebulewe kancane noma insimbi ebulewe ngamabhande okuhlukanisa aqukethe isibabule.