FIELD: technological processes.
SUBSTANCE: present invention relates to the treatment of metals by pressure. This method allows the truncated cone to be profiled at the rear end of the pipe blank before rolling in a three-roll helical rolling mill. Above method for profiling the rear end of a cylindrical tube blank for rolling in three-roll helical rolling mills is characterized in that the end of the blank is shaped in the form of a truncated cone by the synchronous movement of the deformation tools in the radial direction with simultaneous rotation of the blank without its movement in the axial direction.
EFFECT: invention can be used for rolling of pipe blanks in three-roll rolling mill.
1 cl, 9 dwg
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