Main specifications and parameter standards of electromagnetic induction heating roller of calender 1 Common specifications: φ 200mm ~ φ 860mm× L800mm ~ L5000mm; (Can also be customized according to customer requirements) 2 Surface temperature: 40℃ ~ 280℃; (Can also be customized according to customer requirements) Selection of surface treatment for electromagnetic heating roller 1) Hard chromium plating (HRC 56 ~ 68) and mirror surface Ra≦0.005um 2) Teflon spraying: corrosion resistance, high purity and cleanliness, non-stick, lubrication, wear resistance, high and low temperature resistance (-193℃ ~ 260℃) and insulation. 3) Surface ceramic material: non-stick, antistatic and high temperature resistant. 4) plasma spraying: nano-scale carbide spraying, high temperature resistance above 400℃, good wear resistance. 5) Laser engraving on the roller surface can be customized according to customers. '