FUSIBLE METAL BATH OF CONTINUOUS VACUUM PLATING DEVICES FOR SHIELDING AN ATMOSPHERE-VACUUM

摘要

This bath is used for the continuous vacuum plating device for zinc coating on the steel strip. The melt fusion metal is used for shielding vacuum against atmosphere. The composite of molten metal of a low melting point in the bath comprises 50wt.% Bi, 25wt.% Pb, and 25wt.% Sn at 170 to 210deg.C. And the bath comprises 49.4wt.% Bi, 18.0wt.% Pb, 11.6wt.% Sn, and 21.0wt.% In at 130 to 150deg.C. Also the bath comprises 57.5wt.% Bi, 17.3wt.% Sn, and 25.2wt.% In at 150 to 170deg.C.