PRODUCTION OF METAL STRIP WITH COAT THAT FEATURES IMPROVED APPEARANCE Russian patent published in 2014 - IPC C23C2/20 

FIELD: metallurgy.

SUBSTANCE: metal trip is driven through molten pool. Then, coated strip is blown by atomisers spraying gas at every side of the strip. Note here that oxidising capacity of said gas is lower than that of atmosphere consisting of 4 vol. % of oxygen and 96 vol. % of nitrogen. Then, the strip is driven through isolation zone. Said zone is confined at its base by lowing line and top surface of said atomisers. From above it is limited by top part of two isolation chambers arranged at every strip side, directly above said atomisers, and at least 10 cm above said blowing line. On sides, it is limited by sides of aid isolation chambers. Oxidising capacity of atmosphere in said isolation zone is lower than that of atmosphere consisting of 4 vol. % of oxygen and 96 vol. % of nitrogen and higher than that consisting of 0.15 vol. % of oxygen and 99.85 vol. % of nitrogen.

EFFECT: antirust metal coat, perfected appearance, minimum waviness Wa_0,8.

39 cl, 10 dwg