Secrets of Hot Dip Galvanizing - Galco Steel Ireland

The real secret of Hot Dip Galvanising is Sacrificial Protection. Zinc corrodes in preference to steel and also sacrifices itself to protect any exposed steel. This is also known as Cathodic protection and ensures that areas of minor damage to galvanized coatings do not become a problem.
To illustrate this, we galvanized half this farm gate and left the other half exposed to the elements. You can clearly see how the rust is halted where it meets the galvanizing and no sideways creep occurs.

[@ZIGUITAI]

what size is your zinc bath ?

[@markilleen4027]

would you do a whole car

[@hillengineering8264]

no, the heat would cause the panels to distort

[@markilleen4027]

@@hillengineering8264 i would like to try on an old drift missile, see what happens, i have seen cars done in it before

[@trapperjohn3400]

Most steel used in cars is galvanized, then stamped into shape, welded if needed, then painted.

[@markilleen4027]

@@trapperjohn3400 no

[@trapperjohn3400]

@@markilleen4027 In the US this is the case