The piercing mill is used to pierce out and roll the mother tube out of original billet. The single input, double output, two-stage gearbox drives this mill. This is a three metre tall and robust gearbox with a base of 2.8/1.4 meters and weighing around 18 tons.Technical specifications :Input power : 1250 kW @ 750 rpm, A.C.motor Reduction ratio : 5.6875:1 Axial thrust : 1,80,000 N on each output shaft The gears are made from high tensile carburizing alloy steel, 17 CrNiMo6 as per DIN 17210, case hardened to 60
The piercing mill is used to pierce out and roll the mother tube out of original billet. |