C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
117/118
C23C 2/10 (2006.01)
Patent
CA 1081556
ABSTRACT OF THE DISCLOSURE A method of producing layers of lead and its alloys on workpieces made of ferrous alloys comprising dipping the work- pieces to be coated into a two-layer bath, the upper layer of which is a bath of aluminium or its alloys, and the bottom layer of which is a bath of lead or its alloys. The workpieces are then taken out of the deeper layer of the bath of lead and its alloys by pulling them through the upper layer of the bath of aluminium and its alloys, or by pulling the workpieces through the bath of metal, provided in a vessel connected with the bottom layer of the bath. The temperature of both baths, the upper bath and of the bath in the vessel connected with the bottom bath, is maintained within the range of 150°C. to 900°C. The temperatures of the bath of the upper layer, of the bath of bottom layer, and of the bath in the vessel connected with the bath of bottom layer are equal or differ from each other by 50°C. to 750°C.
257825
Bajka Lech
Gierek Adam
Gruszecka Anna
Liberski Piotr
Fetherstonhaugh & Co.
Politechnika Slaska Im Wincentego Pstrowskiego
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