Hot Dip Galvanizing

Howto

1. Sand blast
2. Base bath - 10 minutes min
3. Base bath - 7 minutes min
4. Flux - ammonium
5. Actual dip - 3.5 minutes (until base metal reaches melt temp of 835F)
6. Water - trapped water explodes, and is dangerous, so first dip is dangerous and venting must be assured.
7. Zinc - 2400 lb blocks are the feedstock for hot dip baths. This is only 0.1 cubic meter - or 4 cubic feet.

https://www.aisc.org/globalassets/modern-steel/archives/2014/08/2014v08_galvanizing.pdf

More about surface preparation: [1]

Sourcing

1. Acid -
2. Base - KOH pr NaOH for grease - [2], NaOH doesn't require hot water.
3. Ammonium chloride - $2/lb [3]

Zinc Ingots

• [4]
• Carter Alloys, 2" zinc balls [5]
• ACI - [6]
• Ney - [7]

Links

• Powder Coat vs Hot Dip Galvanized
• Hot Dip Galvanizing Quotes