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cast iron griddle cracked on induction hob - what happened?
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Posted by gb85 (My Page) on Sat, Mar 13, 10 at 13:34
| My lodge 10 ½ inch round griddle just cracked on my portable induction hob – with a very dramatic popping noise! I know it is not from mis-use because we are very careful in handling our cast iron. Has this ever happened to anyone? I will call Lodge on Monday and ask them the same thing. I did notice that my portable induction didn’t heat as hot the last time I used it but I can’t imagine anything happening so bad that it would crack cast iron. I would appreciate any thoughts on this.
thanks |
Follow-Up Postings:
RE: cast iron griddle cracked on induction hob - what happened?
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RE: cast iron griddle cracked on induction hob - what happened?
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| I have used my cast iron for over a year - no problem. I don't understand how this could even happen. |
RE: cast iron griddle cracked on induction hob - what happened?
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| I cracked one on an old fashioned electric coil last year. It could have happened on any cooking element, a.f.a.i.k. |
RE: cast iron griddle cracked on induction hob - what happened?
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I've cracked cast iron, too. Sounds like a rifle shot. I had just rinsed and oiled my dutch oven and put it on the burner to dry it. I ended up leaving it on too long and kah-chang!
It was my fault, of course. Iron is famous for holding heat, which is another way of saying it doesn't conduct heat all that well. It is also brittle. Putting an empty or relatively empty iron vessel on the burner is a recipe for getting it heated unevenly, causing uneven expansion, high stress within the metal and a loud crack when it all lets go.
Now I try give an iron pan more time to warm up, over no more than a medium flame, and I haven't had any more problems. It might be good to baby iron over an induction burner, too, for the same reasons. Once there is a good load of food on board, you can probably turn it up to high. |
RE: cast iron griddle cracked on induction hob - what happened?
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| How big is the heating area of your hob? If there was a lot of unheated overhang and the heat was set fairly high, the temperature gradient could have been different enough to crack. That's something that could happen with any type of heat source, but with flame or pre-heated standard electric, you're more aware of how high the setting is because you can feel or see it, too. I don't know how induction burners regulate their settings-whether they adjust the current output like a standard electric coil or whether they vary the frequency interval of the same current pulse-like a microwave. If it's the latter, it may be difficult to gradually warm an oversized pan. The induction experts or Lodge should have the answer to that one. If the griddle doesn't have a flat bottom-if it's a little concave or has ridges, that would cause uneven heating which might cause cracking. Please let us know what Lodge has to say. |
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