Process for obtaining parts made of copper of very fine texture from a billet made by continuous casting

摘要

The process according to the invention makes it possible to form parts from copper of high purity and fine structure. Beginning with a billet (1) made by continuous casting, it includes the following main phases: a kneading of the billet (1, 4) comprising upsetting and drawing cycles; cutting of the billet into blanks (8) each intended to form one finished part; an operation of die forging (9, 12) at ambient temperature; and a recrystallization heat treatment to obtain a grain size of the copper of less than 40 micrometers. The invention is applicable to the production of internal liners for shaped charges.