Detaching Rolls

Detaching Rolls.

In detaching plants the tube is released from the mandrel bar by light expansion and the mandrel is drawn out of the tube in the mandrel extraction unit. Depending on working conditions and plant design, detaching rolls are made from either cast materials or forged tool steels. For cast rolls we recommend centrifugally produced bi-metal castings with a hard wearing alloyed outer shell and a grey iron soft core. It is recommended that forged rolls are made from either the hot working tool steel Märker® WM28 or in the special heat treated tool steel Märker® ZESEK with high wear resistance.