Resource saving technologies of die forging of copper axially asymmetric (round in shape) forgings on the basis of preliminary forming of forgings side profile formation forming of the forged billets parts by means of free preliminary upsetting

The advisability of combining of operations of preliminary upsetting and broaching of billets outside die bed contours with the operations of subsequent finishing stamping in die blocks at manufacturing of axially asymmetric forgings was substantiated. The operations could be performed on different equipment, the necessity of taking into account the peculiarities of the barrel shape of forgings during the preliminary upsetting prior to the subsequent stamping passes being shown. The necessity of account of conformity to law of change of form material is reasonable at the chosen chart of deformation and set temperature mechanical terms at the choice of transitions of stamping and constructing of brooks of stamps. Proposed was a generalized method of designing of the processes of combined die-forging of axially asymmetric forgings that takes into account the regularities of shape alternation at the operations of setting and broaching. Conformities to law of formation of barrel of copper purveyances that are specified, other things being equal, in number, and sometimes and qualitatively, differ from conformities to law of formation of barrel of steel purveyances, that allows to apply operations preparatory free fallouts of purveyances at the technological planning. More advanced up-to-date technologies of hot die-forging of forgings of “Nozzle” and “Oxygen lance head” type were implemented, it allowing achieving 7.7% saving of industrial copper per each single part