Process and means for hot-dip galvanizing finned tubes

US4814210A · kind A · utility

Inventors

• Werner Ackermann · Siegen, DE
• Klaus Schirmuly · Bad Herrenalb, DE

Key dates

• Filing date: Jan 20, 1988
• Grant date: Mar 21, 1989
• Expiry date: Jan 20, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C2/26
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In a process for hot-galvanizing finned tube, with the finned tubes being of varying geometry, coating with galvanizing media by flooding with such media in a galvanizing pan, the finned tubes automatically pass successively by a transport means consisting of horizontally and vertically mounted supporting, guiding, and driving rollers, and synchronous carrying chain through treatment stages including degreasing, rinsing, pickling, heating, galvanizing, cooling, drying, chromating, and blasting stages for mechanical tumbling/stripping/brushing means, so as to ensure, with additional parameters, the broadest possible range of application in consideration of the economy and requirements relating to environmental protection.