The rollers of auger flight cold rolling mill differ from those of ordinary two-roller rolling mills, primarily in their processing area. In ordinary two-roller rolling mills, the processing area is located in the center of the roller, where the roller’s diameter is the largest, with the roller neck tapering toward the ends. Therefore, the center rolling area is the strongest and withstands the greatest rolling forces. The rollers of auger flight cold rolling mill are tapered, with the taper located at one end. The other end is fixed in a bearing pedestal, supported by the pedestal.

The processing of auger flight cold rolling mill’s rollers are more complex than that of flat rolls, requiring higher precision. The used material is cylindrical, and then rough-turned to remove excess stock. The processing of the tapered surface is particularly critical, requiring specialized tooling to adjust the lathe’s processing angle. This ensures precise tapered angles and a smooth surface finish. The auger flight cold rolling mill’s rollers are manufactured by Gongyi HengYuan Industry CO., LTD. boast high dimensional accuracy, a smooth surface finish, and a long service life.

After rough turning, the rollers will undergo the next process: quenching. Quenching increases the surface hardness of the rollers of the auger flight cold rolling mill. A certain hardness ensures minimal wear during the rolling process. Quenching processes are divided into surface heat treatment and bulk heat treatment. Surface heat treatment involves heating the workpiece surface at a certain distance, holding the temperature for a specified period, and then slowly cooling it. Bulk quenching involves placing the workpiece in a vacuum furnace and heating it throughout. Bulk heating ensures uniform hardness across all parts of the workpiece.

Finally, the auger flight cold rolling mill’s rollers undergo grinding to improve surface finish and control dimensional tolerances, resulting in qualified rollers.