The Influence of Cold Rolling on the Microstructure for Drawing Steels

Florentina POTECAŞU; Octavian POTECAŞU; Elena DRUGESCU; Petrică ALEXANDRU; Miltiade ISTRATE; Doru HANGANU

Auteur/ices

Florentina POTECAŞU "Dunarea de Jos" University of Galati, Romania
Octavian POTECAŞU "Dunarea de Jos" University of Galati, Romania
Elena DRUGESCU "Dunarea de Jos" University of Galati, Romania
Petrică ALEXANDRU "Dunarea de Jos" University of Galati, Romania
Miltiade ISTRATE "Dunarea de Jos" University of Galati, Romania
Doru HANGANU "Dunarea de Jos" University of Galati, Romania

Mots-clés :

deep drawing steel, critical deformation degree, microstructure

Résumé

The paper presents the structural changes that appeared in steel for deep drawing, as a result of cold rolling and of recrystallization thermal treatment. The research was conducted on samples taken from the rolled strap, treated and rerolled after the present technology in Arcelor Mittal. For comparison samples sampled from the steel strap before cold deforming (hot rolled) were used as blank tests. The thermal processing was done under industrial conditions in bell furnace. For the chosen steel the critical deformation degree was around the value of 6.5%.