The following are possible reasons why the glass panel of an induction cooker might break:
Substandard Material Quality:
Induction cooker panels are mostly made of microcrystalline glass or tempered glass. If the manufacturer uses ordinary glass or inferior tempered glass (with a bending strength below 150 MPa), these materials are prone to cracking under prolonged high temperatures.
Thermal Stress Concentration:
When the induction cooker experiences uneven heating, such as when the bottom area of the pot is smaller than the heating zone or when dry burning occurs, the temperature difference of the panel may exceed 200°C, leading to internal stress imbalance and causing the panel to crack.
Mechanical Damage:
Scratches or cracks on the panel surface (even if only 0.1 mm deep) can become stress concentration points during heating, causing the panel to shatter. Additionally, impacts from heavy objects, improper handling, or negligence during installation can also cause the panel to crack.
Installation or Design Defects:
A loose fit between the induction coil and the panel (a gap greater than 1 mm) can lead to uneven heat conduction, causing heat to accumulate in localized areas and potentially causing the panel to crack.
Improper use:
Improper use such as drying for more than 3 minutes (at which point the panel temperature can reach over 600℃), placing cookware beyond its load-bearing limit, or using cookware with uneven bottoms can all cause the panel to crack.