本文介绍意大利热那亚城Sestri Levante钢管厂的Mennesmann—Meer型41/2″冷轧管机的轧制过程及其孔型设计等。轧制过程的叙述图1是冷轧过程简图。被轧制的管坯S由两个半圆形孔型块在不纵向移动的芯棒m上压延成成品管f。固定在两个轧辊d上的孔型块往复运动。在轧辊每次往复运动之后, This article describes the rolling process and hole design of the Mennesmann-Meer 41/2 "cold rolling mill at the Sestri Levante steelworks in Genoa, Italy Description of the rolling process Figure 1 is a schematic diagram of the cold rolling process. Of the tube S by two semicircular hole-shaped block in the non-longitudinally moving mandrel m calendered into finished product f fixed to the two rollers d on the reciprocating motion of the block type After each roll reciprocating motion,