If the bottom of a pan with an induction-compatible stainless steel bottom falls off, it could be due to several reasons:
Poor manufacturing quality: The pan might have been poorly constructed with inadequate materials and welding, leading to a weak bond between the stainless steel bottom and the rest of the pan.
Overheating: Excessive and prolonged exposure to high heat can cause the materials to weaken and degrade, leading to a separation between the stainless steel bottom and the rest of the pan.
Thermal shock: Rapid temperature changes, such as transferring a hot pan to a cold surface or immersing a hot pan in cold water, can cause stress and potentially lead to the detachment of the bottom.
Physical damage: Dropping the pan or subjecting it to heavy impact can damage the structural integrity of the pan, causing the bottom to come off.
Corrosion: If the pan is not properly cleaned and cared for, it may develop rust or corrosion, which can weaken the materials and contribute to the detachment of the bottom.
Age and wear: Over time, even with proper use and care, materials can degrade and weaken, eventually leading to the separation of the bottom.
Incorrect usage: Using the pan on a larger induction cooktop zone than the pan's diameter or using it on a heat source other than induction can lead to uneven heating, which might put additional stress on the bond between the bottom and the rest of the pan.
In any case, if the bottom of your pan has fallen off, it is crucial to stop using it immediately to avoid potential hazards, such as burns or accidents. Discontinue using pans with any structural defects to ensure your safety in the kitchen.