FIELD: metallurgy.
SUBSTANCE: blanks made of leaded brass, received by multiple-pass cold plastic deformation with intermediate full recrystallisation annealing at the temperature 550-700°C, are subject to pre-finishing cold plastic deformation, pre-finishing thermal treatment and finishing cold plastic deformation. Pre-finishing thermal treatment is implemented at the temperature 200-250°C with isolation during 1-2 hours. Elongation ratios relation while pre-finishing and finishing deformations are installed in the range 1.09-1.17.
EFFECT: it is achieved standard mechanical properties in defined intervals while usage in the capacity of charge materials of scrap and wastage.
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Authors
Dates
2009-04-20—Published
2007-04-05—Filed