|Select the high quality 45 # steel, alloy steel tube, precision tube, etc.|
|Inner spiral flow channels ,jacketed type design and other structure.|
Heating treating,welding ,destressing,quenching,finish turning, accurate grinding, hard chrome plating,
grinding and polishing by the 3M abrasive mirror polishing machine.
1.roughness Ra 0.005, finish14, without any Vibration lines, stripes or galling
2.temperature difference≤±1°C,hermal deformation≤0.01mm,coaxiality≤0.005mm,straightness≤0.005mm,run out≤0.005mm.
3.After quenching the hardness of the roller’s surface is HRC55~58 ,after hard chrome plating it is above HRC65.
Used in PVC, ABS. PP, PE, PC and other types of plastic sheet, plates, plastic film, paper, leather,metal,
cloth or decoration materials for calendering etc.