Generally no, consumable metal products are generally safe, an exception to this is teflon coating on certain pan’s – although it isn’t subject to the process you described – using it improperly can result in the teflon flaking off and into food. However, the danger’s of this have not been completely ascertained.
Apparently, metal pots and pans do leach some metal into food which increases at higher temperatures and when you are cooking things high in acidity. Cast iron leaches a fair amount of iron in to the food but since we need iron in our diets this is usually an added benefit. Aluminum leaches aluminum in to food, though there have been no proven health hazards. Stainless steel is considered the safest. Overall, all metal cookware leaches some of its metal into your food but they have not been determined to negatively affect health.
According to this article, non-stick pots can pose a threat if they are overheated. They contain polytetrafluoroethylene, which contains dangerous fumes when overheated. They recommend using stainless steel, cast iron, or enameled cast-iron cookware.
Metals leach when used just like plastics, the difference being that iron, chromium, and aluminum are less toxic than most of the compounds leached from plastic.
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