| 摘要 |
<p>The resistant heating element, preferably in the form of a rectangular prism, with through openings located parallel to each other, is characterised by the fact that the external walls (3) of the element, in contact with the clamps (4) supplying electricity, have a greater thickness (g2) than the other walls of the element. The thickness (g2) of the external walls to which electricity is supplied is equivalent to 1,25 to 3 times the thickness (g1) of the other walls. The external walls (3) of the element, in contact with clamps (4) supplying electricity, contain a coat (P) that is well conductive, preferably made of metal. The resistant element, as in the invention, is made of a composite containing graphite and silty mineral, preferably kaolin.</p> |
