METHOD FOR PREPARING CONTINUOUSLY CAST COPPER BILLET FOR DRAWING Russian patent published in 2000 - IPC

FIELD: plastic metal working, namely drawing production, possibly making cold drawn copper products of continuously cast billets. SUBSTANCE: method comprises steps of subjecting continuously cast billet to heat deformation including preliminary cold deformation, for example single-pass drawing with elongation factor 1.1-1.22 and annealing at 700-780 C for 3-4 hours; performing preliminary drawing in direction coinciding with direction of outlet of cast billet from continuous casting plant. High quality intermediate billet free from defects of continuously cast billets and capable to be subjected to multipass break-free drawing is formed by heat deformation of continuously cast billet for converting cast structure of metal to deformed structure in the whole volume of billet and providing its enhanced drawability. EFFECT: stable quality factors of ready product due to recrystallization process without negative influence of inheritance of cast structure upon operational characteristics of product. 2 dwg, 1 tbl