| 摘要 |
<p>A method for constructing hot plates characterised by comprising the following steps: forming a cast iron plate (2) comprising on its lower surface two annular ribs (4, 6) defining a corresponding annular channel (8); preparing a bed (12) of dielectric material in powder form, the shape and dimensions of which correspond to those of the annular channel; mounting a resistance element (14) on said bed; covering said resistance element with a second powder bed (16); firing the powder beds to obtain a hardened body; inserting said body into the annular channel (8) and locking it therein.</p> |
