Method for Preparing Hot-Rolled Semifinished Steel Rolled Stock for Cold Rolling

摘要

The invention relates to the field of pressure treatment of metals and can be used in the production of a cold-rolled strip. The problem addressed by the invention is that of being able to exclude a pickling operation in the preparation of semifinished rolled stock for cold rolling. Complete de-scaling of the surface of the semifinished rolled stock without using picking is provided by carrying out preliminary cold rolling of the semifinished rolled stock in rolling-mill rolls according to prescribed values for compression and for the ratio of compression to deformation zone length. The rolling can be carried out in one of two consecutively mounted mills.

主权项

1. A method of preparing hot-rolled semifinished steel stock for cold rolling, the method comprising preliminary cold rolling of semifinished rolled stock in rolls of a rolling mill stand with preset reduction, wherein the preliminary cold rolling of the semifinished rolled stock in the rolls of the rolling mill occurs with a reduction of 12 to 35% at a 3.8±0.5%/mm ratio of the reduction to a length of a deformation region.