ANI Metal's weekly galvanising newspaper 📰GalvaPress…Twentyseventh Edition🤟Editor Geoff Crowley ✒️
Dross measurement
How to measure how much dross is in the kettle
A simple probe can be used to check the dross level.
* A 12 mm diameter steel rod with a 10 cm "L" on end.
* Gently lower into zinc until slight resistance is felt.
Note depth.
* Push rod to the bottom of the kettle and note depth now.
* Dross thickness is difference between two depths.
* Dross should be less than 15 cm, less than 10 cm is better.
* Survey the whole kettle and find where dross accumulation lies.
* Dross does not lie evenly across the kettle bottom.
* Do this before and after dross removal.
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