The Mechanism of Formation of the Inner Surface of Pipes during Cold Rolling  Full text 

D.E. Kuznetsov

SE "SRTI"

UDC 621.774

Metall. Min. Ind.,  2012, Vol. 4, No. 2, pp. 27-33

Abstract

The requirements imposed on the surface microrelief of cold rolled pipes are viewed. The mechanism of forming the inner surface microrelief shape changing of pipes during cold rolling, as well as the dependence of the state of the internal surface of pipes from the stressstrain state of billet at its compressing in passes of cold rolling mill are analyzed. The information on the impact of technological lubricants on the resulting roughness of the inner surface of the of cold rolled pipes as well as the value of the contact surface in the hearth the pipe cold rolling mill are stated.

Keywords: COLD-ROLLED PIPES, SURFACE MICRORELIEF, PROCESSING METHODS