Process Hot dipping
Hot-dip deposition is used to increase corrosion and wear resistance. Coatings of all low melting-point metals and alloys (which can be melted without undesirably changing the substrate) are deposited.

The process is carried out by immersing a pre-treated (cleaned, etched, etc.) substrate in a bath of molten metal or alloy for a specific time (from 0,5 to 5 minutes).

Limitations are the melting temperature of the coating metal (less than 1300 C), the difference of melting-points between the coating material and the substrate, the brittleness of the coating layers, and the shape of the substrate (no small openings.)
Danish Name Varmforzinkning
Category Surface processes, plating
Materials Coating materials:
Aluminium
Zinc
Tin
Lead
Substrates:
Metals
Typical products Radiator
References Herning Varmforzinkning A/S
Nordisk Förzinkningsförening
Siegener Verzinkerei GmbH
Price notes About 4 DKK/kg substrate
Price date November 1996
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2003 Torben Lenau
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