Process for the manufacture of magnetic sheet unoriented grain.

Procedure for the manufacture of magnetic sheet non-oriented, by which a rolled strip is produced hot from a starting material such as slabs, strapping, the prebandas or thin slabs, which is made of a steel having (wt%) 0, 001-0, 05% of C, <1, 5% Si, <0, 4% Al, with Si + 2 Al <1, 7%, 0, 1 to 1, 2% of Mn, optionally, to a total of 1, 5% aleadora as P addition, Sn, Sb, Zr, V, Ti, N, Ni, Co, Nb and / or B, and as the remainder iron, and usual, the rolled hot in several passes deforming the starting material directly heat melting or after preceding reheating to a reheating temperature of at least 1000 ° C and at most 1180 ° C accompanying elements and being wound below where during hot rolling is performed, at least the first pass of deformation in the austenitic field and at least another pass of deformation in the mixtobifasico field austenite / ferrite and wherein during rolling in the mixed field biphasic one Eh change the general shape of at least 35% is achieved.