PARILÁK Ľudovít ŽP VVC,s.r.o.

Spoluautoři MOJŽIŠ Milan, KVAČKAJ Tomáš, DOMOVCOVÁ Lucia

In the process of tube rolling in Železiarne Podbrezová it is crucial to properly maintain the selected thermomechanical process parameters, namely: heating of the tube stock in a walking beam furnace, maintaining the uniform plastic deformation in all rolling stands of a stretch-reducing mill and, finally, keeping the finishing rolling temperature of the tube over the Ar3 temperature.In this paper, optimization results for 25CrMo4 tube rolling are being presented, considering the final tube with a 2,6 mm wall thickness. For this, the stretch-reduction parameter in all rolling stands as well as the finishing rolling temperature has been optimized.

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