Analysis of pipe piercing on PRP 70-270 with FEM modeling
https://doi.org/10.17073/0368-0797-2020-10-848-855
Abstract
The article analyzes the piercing and rolling process of seamless pipes on PRP 70-270 of JSC “VMP” in terms of power parameters, piercing time and geometric sizes of pipes. The research results were compared with the results of computer simulation on software package QFORM 3D. For simulation, the deformation zones were designed for piercing a mold tube with dimensions of 203×16.5 mm in one pass on a mandrel with diameter of 162 mm and in two passes of piercing and rolling-off on mandrels with diameter of 76 and 162 mm, respectively. From the obtained data on the power parameters, it was found that from the point of view of energy consumption, piercing in one pass seems more appropriate. However, when piercing in one pass, wear resistance of the mandrels sharply decreases, since the contact time between the tool and the hot metal increases. This leads to a decrease in quality of the pipes’ inner surface, more frequent replacement of the tool and increased downtime of the equipment. During simulation, the selected parameter of the friction factor has a significant impact on the value of power parameters (torque and power consumption) and piercing time. The dependences of changing power parameters and piercing time on the friction factor during piercing in a two-roll mill with guards are obtained. With increase of the friction factor, piercing time decreases and torque and rolling power increase. The simulation results are correlated with results of experimental rolling. With a correctly chosen value of the friction factor, power parameters and geometry of the mold tube can be quite accurately predicted by computer modeling.
About the Authors
D. A. Orlov
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Postgraduate of the Chair “Metal Forming”, Chief Specialist of Seamless Pipe Production Technology
Moscow
A. V. Goncharuk
National University of Science and Technology “MISIS” (MISIS); JSC “Vyksa Metallurgical Plant”, Vyksa, Nizhny Novgorod Region
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Metal Forming”
Moscow
O. A. Kobelev
JSC Russian State Research Center “CNIITMASH”
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Chief Specialist of State Corporation “ROSATOM”
Moscow
O. G. Komarnitskaya
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Bachelor of the Chair “Metal Forming”
Moscow
N. S. Bunits
National University of Science and Technology “MISIS” (MISIS)
Russian Federation
Russian Federation
Master Student of the Chair “Metal Forming”
Moscow
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Review
For citations:
Orlov D.A., Goncharuk A.V., Kobelev O.A., Komarnitskaya O.G., Bunits N.S. Analysis of pipe piercing on PRP 70-270 with FEM modeling. Izvestiya. Ferrous Metallurgy. 2020;63(10):848–855. (In Russ.) https://doi.org/10.17073/0368-0797-2020-10-848-855
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