Hot Dip Galvanizing
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About
- Kettles - copper causes premature kettle failure.
- Kettle manufacturer - [1]
- Materials engineered for use in galvanizing operations - the specific property required is
- Wikipedia - [2]
- Zinc Ammonium Chloride - used as flux - [3]. Zaclon in Ohio makes it. [4]
- Coating thickness for 1/4" and above steel is 85 microns minimum. [5]
Process
From [6]
Howto
- Sand blast
- Base bath - 10 minutes min
- Base bath - 7 minutes min
- Flux - ammonium
- Actual dip - 3.5 minutes (until base metal reaches melt temp of 835F)
- Water - trapped water explodes, and is dangerous, so first dip is dangerous and venting must be assured.
- 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: [7]
Sourcing
- Acid -
- Base - KOH pr NaOH for grease - [8], NaOH doesn't require hot water.
- Ammonium chloride - $2/lb [9]
Zinc Ingots
See Zinc#Sourcing
- [10]
- Carter Alloys, 2" zinc balls [11]
- ACI - [12]
- Ney - [13]
- Industrial Metal Supply - [14]. Do they have ingot?
- Victory - [15]
- Milward - [16]
- Umicore - [17]
- Belmont Brooklyn - [18]
- AEM says zinc - [19]
- Ingots on Thomas Register - [20]
- Zinc Ingot on Thomas Register - [21]
- Zinc on Thomas Register - [22]