Homogeneously heating can be obtained by employing the steel tiles as thermal balance medium in horizontal roller track style tempering oven and the steel tile can also act as a protector of heating element.

A trapezoid heating element used in plate film evaporator was presented in this article.

In the paper,the authors analyse the damage reasons of traditional Ni Cr Heating elements,and introduce both the advantages and the economic effects of adopting silicon carbide rods as heating elements.