>>508773351
You think the ovens were operating above the melting point of steel? What were they made out of?
And besides, does turning up the heat even significantly increase the reaction-rate? I'm not so certain. If you treat it as a water-boiling problem, the limiting factor isn't necessarily how hot your source is, but rather, how slow the heat moves. That's why a sauna works, because the heat-transfer rate is slow.