Hot Dip Galvanizing: Difference between revisions
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More about surface preparation: [https://galvanizeit.org/knowledgebase/article/surface-preparation-prior-to-galvanizing] | More about surface preparation: [https://galvanizeit.org/knowledgebase/article/surface-preparation-prior-to-galvanizing] | ||
= | =Sourcing= | ||
#Acid - | |||
#Base - KOH pr NaOH for grease - [https://www.ecleanmag.com/sodium-hydroxide-vs-potassium-hydroxide-what-is-the-difference/#:~:text=Sodium%20Hydroxide%20is%20more%20commonly,Hydroxide%20is%20known%20as%20potash.&text=If%20you%20need%20to%20clean,with%20a%20hot%20water%20rinse.], NaOH doesn't require hot water. | |||
#Ammonium chloride - $2/lb [https://www.amazon.com/Ammonium-Chloride-NH4Cl-Pounds-bags/dp/B00L2158N0/ref=sr_1_4?dchild=1&keywords=ammonium+chloride&qid=1613073959&s=lawn-garden&sr=1-4] | |||
==Zinc Ingots== | |||
*[http://www.a1alloys.net/products/zinc/] | |||
*Carter Alloys, 2" zinc balls [https://www.carteralloys.com/zinc.html] | |||
=Links= | =Links= | ||
*[[Powder Coat vs Hot Dip Galvanized]] | *[[Powder Coat vs Hot Dip Galvanized]] | ||
*[[Hot Dip Galvanizing Quotes]] | *[[Hot Dip Galvanizing Quotes]] | ||
Revision as of 21:56, 11 February 2021
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: [1]
Sourcing
- Acid -
- Base - KOH pr NaOH for grease - [2], NaOH doesn't require hot water.
- Ammonium chloride - $2/lb [3]