| 摘要 |
The subject of the invention is an induction cooking device comprising at least one inductor positioned under a thermally strengthened glass plate, the composition of which glass is not of lithium aluminosilicate type, characterized in that the glass has the following characteristics: its thickness is at most 4.5 mm, the c/a ratio of the glass before strengthening is at most 3.0 after Vickers indentation under a load of 1 kg, c being the length of the radial cracks and a being the half-diagonal of the Vickers impression, the sigma/(e.E.alpha) ratio is at least 20 K.mm-1, or even 30 K.mm-1, sigma being the maximum stress generated at the core of the glass by the thermal strengthening in Pa, e being the thickness of the glass in mm, E being the Young's modulus in Pa and alpha being the linear thermal expansion coefficient of the glass in K-1. |
