This machine adopts Seven Rolls level correction, roll arbors adopt high-quality alloyed steel 40Cr, made with a heat treatment, and it has a perfect effectiveness of level correction to defect band steel;
The roller of the principal machine adopts the bearing steel Cr15 to strike, distressing to annealing, quenching, tempering, and Parkerizing, such heat treatment process. The surface hardness reached HRC60 degree. All the rollers are made by the numerical control lather, and this guarantees the accuracy of the roller's sizes and prolongs its working life.
The roller of the principal machine adopts the bearing steel Cr15 to strike, distressing to annealing, quenching, tempering, and Parkerizing, such heat treatment process. The surface hardness reached HRC60 degree. All the rollers are made by the numerical control lather, and this guarantees the accuracy of the roller's sizes and prolongs its working life.
