A cikin karkace bututusamar da tsari da kuma amfani, akwai ƙirƙira mai yawa kyau kwarai waldi da kuma hanyoyin da ake samarwa, da yawa da gudummawar ga tsayayye da sauri ci gaban da masana'antu, amma kuma ya sa wannan masana'antu da aka inganta a ci gaba.Wanne ne hanyar waldawa a cikin sabuwar ƙirƙira a cikin 1940, shi kuma gaban wurin shine waldawar hannu ɗaya ko kuma amfani da slag don kare shi, amma wannan ba shine murfin lantarki ba, an ƙera shi yana fitar da ruwa. .Canja bayan waya, na'urar isar da waya tare da farantin karfe da waya, ana aika da waya ta ci gaba, ana ciyar da wannan waya ta walda a ci gaba da ci gaba da ciyar da ita a cikin ƙwanƙolin fusible juzu'i wanda ke rufe wayan walda mai kunna wuta, kayan tushe da ɓangaren narkewar nau'ikan juzu'i. wani rami, baka yana konewa a cikin kogon ciki, don haka a kira shi waldawar baka.An binne Arc a cikin kogon.Tsarin ɗora nauyin walda mai ɗorewa ya ƙunshi isar da magunguna ta hanyar bututun da za a haɗa zuwa gaban nau'in walda na biyu ana amfani da shi, yin amfani da waya, tunda ana iya ci gaba da aikawa da waya;Sanda, sanda cewa dole ne mu ƙone shugaban walda ya ba da jifa, kuma an dakatar da aikin, sannan canza waldawar lantarki.

Kuma irin wannan hanyar walda idan aka kwatanta da sauran hanyoyin ita ce babbar fa'ida, fa'ida ta farko ita ce ta atomatik;na biyu fa'ida, wanda aka binne karkashin baka waldi, don haka yana da zafi musayar da kuma kariya na in mun gwada da karfi yi, high quality waldi fita;na uku fa'ida, saboda submerged baka waldi baka binne a cikin juyi, don haka shi za a iya amfani da babban halin yanzu, waldi ingancin in mun gwada da high.