W artykule przedstawiono wyniki badań dotyczących wykorzystania redukujących warunków topienia miedzi, wybranego brązu i mosiądzu w odlewniczych procesach przetapiania. Dokonano oceny ilości tlenu w tworzącej się w tych warunkach atmosferze topienia.
The paper presents the results of the experiments of applying the reduction copper, bronze and brass melting conditions in remelting processes. The evaluation of the amount of oxygen in the melting atmosphere which is constituted in these conditions has been carried out. The experiments showed that the efficiency of eliminating oxygen out of the melting atmosphere is much higher while applying slag with carbide reagents together with carbonitrogen compounds, than while applying carbon itself. The following has been stated: - the change of oxygen concentration in the melting copper and bronze atmosphere generated under the crucible cover within the reducing conditions, - similar effects for slag mixture melted under the cover adopted to melting with the use of nitrogen.