Summary for theory of galvanising Discussion
Theory of galvanising is raised here as Christopher Tidy asks what happens when steel enters molten zinc: whether zinc must first solidify on the cold steel so iron can diffuse into the coating, and whether preheating the steel to bath temperature would make the zinc all run off and leave no coating. The reply does not answer the process theory directly, but instead points him to reference material. It recommends M. J. Hornsby’s *Hot-Dip Galvanizing* and Jean Lamesch’s *World History of Galvanizing*, noting the latter may be hard to obtain except through Arcelor or Amazon UK. The answer also suggests the American Galvanizers Association website, galvanizeit.org, and says the site’s articles by Dr. Thomas Cook are especially useful, calling him a leading expert on hot-dip galvanizing.
Q. Just a quick question for experts in galvanising practice. I am trying to understand what happens on the surface of the steel when it enters the bath of molten zinc. Is it essential for zinc to solidify on the cold steel surface, so that diffusion of the iron into the coating can take place? What would happen if the steel were heated to the bath temperature before immersion? Would all the zinc run off and leave no coating at all?
If anyone knows of a good book, let me know. Thanks for the help!
Chris
Christopher Tidy
– Hannover, Germany
November 19, 2018
November 20, 2018
“Hot Dip Galvanizing
A Guide to process Selection & Galvanizing Practice”
by M. J. Hornsby
on Amazon
or
or
(affil link)
A. As far as books go – here are two recommendations:
(1) Hot-Dip Galvanizing by M.J. Hornsby; and
(2) World History of Galvanizing, by Jean Lamesch (privately published by Arcelor in 2004).
The second – I don’t know how you’d get a copy; maybe from Arcelor. You should also checkout galvanizeit.org, the website of the American Galvanizers Association. A lot of very useful information there. And a final suggestion – check out on this great website all of the articles by Dr. Thomas Cook. He is, I think, the world’s leading expert on hot-dip galvanizing.
Tom Rochester
CTO – Jackson, Michigan, USA
Plating Systems & Technologies, Inc.
Ed. note: “World History of Galvanizing” [link is to info about the book at Amazon.uk] appears to be currently available from amazon.uk via Finishing Publications Ltd. but, sorry, apparently not from amazon.de