I-steel surface coating yakhelwe ukugqwala noma ukuhlobisa, noma kokubili.I-welding ye-seam, hhayi nje ukuthola amandla anele ahlangene, kodwa futhi iyadingeka ukuze kugcinwe umsebenzi we-coating.Ngokwezidingo zamandla, inqubo yokuthungatha i-seam kanye nensimbi engagcotshiwe iyafana, uma kucatshangelwa izidingo ze-coating, imingcele yenqubo yokushisela iyokwenza izinguquko ezidingekayo, bese inaka umthelela wokumelana nokumelana nokuxhumana, okuvumela i-electrode indentation, ukunamathela kanye ukhuni lukamama kanye nezingxubevange zensimbi ukuthambekela ukwakha adhesions kwenzeka electrode.

Ipayipi lensimbi eliphehliweukukhulisa ukumelana nokugqwala kwensimbi, kodwa ngemuva kwensimbi ethambile eqinile kunzima kakhulu kunokushisela ipuleti lensimbi.Ikakhulukazi ngenxa yezinga eliphansi lokuncibilika le-zinc enamathela (mayelana ne-419C), ngesikhathi sokushisela ungqimba lwama-galvanized luqala ukuncibilika futhi ilungu le-roller kanye ne-electrode yokushisela kanye nelungu le-welding kanye nobuso bokuxhumana belungu le-welding yamanje yokusabalalisa, indawo yokuxhumana iyanda. , ukuminyana kwamanje kuncipha futhi indawo yokuthintana ye-electrode kanye ne-weldments ungqimba lukathayela luyancibilika, futhi ukuhlangana kobuso be-electrode, i-copper electrode alloying (CuZn), ukuqhutshwa kwayo kukagesi, ukuwohloka kokusebenza kokushisa.Iphuzu abilayo zinc 906C, lapho izinga lokushisa lidlula lokhu lokushisa, ukuhwamuka zinc.Ukwakheka kwama-pores noma imifantu ku-nugget, indawo ethintekile yokushisa isakazwa kusixhumi ibangela ukuqhekeka kwe-embrittlement kungase kube ngaphansi kwengcindezi.Ukuhlolwa kwabonisa ukuthi lapho lincane izinga lokungena (10 – 26%), ama-crack defect ayancipha;isivinini sokushisela siphezulu, izimo zokupholisa zimbi, indawo eshisayo kanye nokungena okujulile, kulula ukuqhekeka.Ngakho-ke, ukuqinisekisa ububanzi be-nugget kanye nezimo zamandla ahlangene, kufanele uzame ukusebenzisa i-current encane, isivinini esiphansi se-welding kanye nokupholisa okuqinile kwangaphandle.Ama-Electrodes kufanele asetshenziselwe ukufaka idrayivu ye-roller drum drive, ukuze kugcinwe i-tube round trim futhi kuhlanzeke usayizi we-electrode engaphezulu.