No the molucular structure isn't changed when it's heated during dry burning. These metals are designed to heat and cool....but what these metals don't like is being dunked in cold water while the metal is glowing red hot...and as I said, only on certain metals...which ones?...well that's the question.
When heated during dry burning, it cools down slowly by itself afterwards and thus maintains it's integrity.
Well that's the thing. You won't know if the metal is flaky, as it happens on a molucular level.
Nah friend, i've decided on day one i'm not going to dunk my glowing coil in cold water.
I have worked in the metal industries for a long time and since then migrated to construction side of trades and most probably have had something to do with the car you drive now. I'm qualified to weld and or modify suspension parts and not just anyone is allowed to do that.
I'm also a qualified Quality Assurance and Quality controll officer with destructive and non destructive testing experience.
Point I'm making is any metal subjected to Heating and Cooling and Annealing in any order changes the carbon structure of said metal whether you want to believe it or not. Whoever told you nothing happens when the metal is heated and annealed isn't being truthful.
That's the purpose of annealing a metal so we can controll the process. That why some processes gets annealed in an oven and others sneaked in open air and some fan assisted.
Here I'm not saying you are wrong. I just saying I am not wrong.
When the metal starts to degrade as in vape coils. The metal will leave flakes even after cleaning. It's a sign the coil has had enough of heating and cooling because whether we know it or not it is exactly what we do with our coils when vaping without knowing it. Heat- Juice(VG) etc and then Cooling. Same thing on a daily cycle a few times a day. so once you start seeing black spots on the cotton it isn't always gunk falling from the coils. Sometime it's the metal itself degrading.
Another reason I'm interested in the new Innokin refresh function. The back and forth movement of current also changes metal structures. So does any current for that matter.
On another note... Try and pull a heater coil obviously when cooled down and see what happens. (Open air Annealing) the coil (heating element) breaks. Leave it as is without touching it and it will last very long.
Still a suggestion. Use it don't use it.
We're still friends right?