Ngophuhliso lwenzululwazi yanamhlanje kunye nobuchwepheshe, ishishini lentsimbi njenge "skeleton" yoshishino lwehlabathi, isikhundla salo siya siba sibaluleke ngakumbi, kwaye iimfuno zomgangatho wentsimbi zingqongqo ngakumbi, enye yeendlela ezisebenzayo zokuphucula i-injini. umgangatho wentsimbi ye-carburization desulfurization, i-calcium engenamthungo engenamthungo yeCalcium Cored Wire edlala indima ebaluleke kakhulu.