Six The sponge electrode is then put in the vacuum arc furnace for melting. In this particular water-cooled, copper container, An electrical arc is used to soften the sponge electrode to kind an ingot. The earliest electrical application of SiC was for a surge safety in lightning arresters in electric https://glasslinedcarbonsteelpipe60370.tdlwiki.com/1559983/the_2_minute_rule_for_is_boron_a_metal_or_a_non_metal