National University of Science and Technology (Moscow, Russia):

A. S. Aleshchenko, Cand. Eng., Associate Prof., Head of the Chair “Metal Forming”, e-mail: judger85@mail.ru
Yu. V. Gamin, Cand. Eng., Senior Lecturer, e-mail: gamin910@gmail.com
B. Kh. Chan, Post-graduate, e-mail: tbh510@gmail.com
V. Yu. Tsyutsyura, Post-graduate, e-mail: tsyutsyura.vladimir@gmail.com

At present great attention is payed to tool wear resistance of screw rolling mills during tube production of high-alloys, high-temperature alloys and corrosion resistance alloys. The above said steel grades have high strength features and high adhesion to process tools. Wear resistance of working tools (mainly the mandrels for screw piercing rolling mill and working rollers) is widely reviewed in scientific articles. However working tool wear resistance at piercing of high-temperature alloy billets and the quality of the obtained shells are not completely studied. The both constantly attract attention of the investigators. The aim of the work is the description of the wear process of mandrels and working rollers of screw piercing rolling mill “MISIS-130D” at piercing of high-temperature alloy billets. At the first part of the article the linear dependence between the volume of wear part and material resistance of the mandrel to the number of pierced billets is determined. Alloy steel Cr18Co60W14Ni11 was used for the mandrels. As for the billets, they were made of alloy steel CrNi45Al, which gives possibility to predict the tool operation life. But at piercing of high-temperature alloys it is necessary to reduce adherence of the metal on the surface of the working tool. Two main factors which caused poor quality of the shells during the experiments were defined. They are loosing of the original mandrel shape and adherence of piercing material on the cone operation surface. At the second part of the article comparative analysis of data concerning the wear of working rollers made of steel grade 45 at “MISIS-130D” screw piercing rolling mill is given. The data were obtained as a result of computer simulation of piercing process using DEFORM-3D program and after experimental rolling. Using Archard’s model allowed to get data reflecting wear volume along the barrel length of the roller. The main area of roller wear is the inlet cone. And max value of wear depth of the operation surface can be found till minimal distance between the rollers during the rolling pass. Material resistance of working rollers was determined after rolling of about 150 tons of high-temperature alloy billets.

1. Romantsev B. A., Matyko O. K., Goncharuk A. V., Aleshchenko A. S., Polivets A. V. Increasing wear-resistance of piercing mill plug. Izvestiya vuzov. Chernaya metallurgiya. 2008. No. 10. pp. 16–19.
2. Romantsev B. A., Aleshchenko A. S., Tsyutsyura V. Yu., Lube I. I. Features of 159-426 TPA piercing mill working rolls wear during rolling of continuously-cast large diameter billets. Proizvodstvo prokata. 2016. No. 6. pp. 20–27.
3. Romantsev B. A., Aleshchenko A. S., Tsyutsyura V. Yu, Tyshuk I. N., Lube I. I. Features of piercing mill TPA 50-200 working roll wear during rolling continuously-cast and hot-rolled billets. Metallurgist. 2017. Vol. 60, Iss. 9–10. pp. 1062–1069. DOI 10.1007/s11015-017-0408-x.
4. Wang L., Liu F., Zuo Q., Chen C. F. Prediction of flow stress for N08028 alloy under hot working conditions. Materials and Design. 2013. No. 47. pp. 737–745.
5. Thomas A., El-Wahabi M., Cabrera J. M., Prado J. M. High temperature deformation of Inconel 718. Journal of Materials Processing Technology. 2006. No. 177. pp. 469–472.
6. Romantsev B. A., Goncharuk A. V., Aleshchenko A. S., Mintakhanov M. A. Production of hot-rolled tubes from Kh18N10Т steel at screw rolling mill. Proizvodstvo prokata. 2014. No. 8. pp. 14–17.
7. Romantsev B. A., Goncharuk A. V., Chzhe-Sun Hyo. Production of hot-rolled tubular billets from alloyed steels. Proizvodstvo prokata. 2015. No. 5. pp. 23–26.
8. Cabrera J. M., Mateo A., Llanes L., Prado J. M., Anglada M. Hot deformation of duplex stainless steel. Journal of Materials Processing Technology. 2003. Vol. 143–144. pp. 321–325.
9. Galkin S. P., Romantsev B. A., Kharitonov E. A. Putting into practice innovative potential in the universal radial shear rolling process. CIS Iron and Steel Review. 2014. Vol. 9. pp. 35–39.
10. Xue H., Lijun W., Hui X., Runguang L., Shaogang W., Zhonglin C. Superplastic properties of Inconel 718. Journal of Materials Processing Technology. 2003. No. 137. pp. 17–20.
11. Pyshmintsev I. Yu., Vydrin A. V., Kosmatsky Ya. I.., Voskhodov V. B., Ananyan V. V., Zubkov A. M., Denisyuk S. A., Shlyamnev A. P. Analysis of results of pilot production of tubes from new corrosionresistant steel. Izvestiya vuzov. Chernaya metallurgiya. 2011. No. 7. pp. 66–70.
12. Rychkov S. S., Kinzin D. I. Simulation of rolls wear by finite elements method in grooves of simple form. Kalibrovochnoe byuro (Electronic scientific journal). 2013. Issue 1. pp. 29–43.
13. Danilov F. A., Gleyberg A. Z., Balakin V. G. Production of steel tubes by hot rolling. Moscow: Metallurgizdat, 1954. 616 p.
14. Teterin P. K. Theory of helical rolling. Moscow: Metallurgiya, 1971. 368 p.
15. Serin K., Pehle H. J. Improved service life of hot forming tools in seamless tube plants. Stahl und Eisen. 2014. No. 11. pp. 161-173
16. Romantsev B. A., Aleshchenko A. S., Gamin Yu. V., Tsyutsyura V. Yu, Lube I. I., Orlov M. M. Features of 159-426 TPA piercing mill plug wear during piercing of continuously-cast large diameter billets. Kuznechno-shtampovochnoe proizvodstvo. Obrabotka metallov davleniem. 2017. No. 4. pp. 22–31.
17. Chubukov M. Yu., Rutskii D. V., Uskov D. P., Zyuban N. A., Palatkina L. V. Influence of service life of piercing mill plugs on structure and composition of surface layers. Chernye metally. 2016. No. 11. pp. 26–30.
18. Merkulov D. V., Toporov V. A., Chepurin M. V. Features of piercing conditions for continuously cast billets. Chernye metally. 2013. No. 1. pp. 18–24.
19. Konovalov M. S., Shenogin V. P. Study of durability of small diameter piercing plugs from Ni3Al-based alloy. Proceedings of the conference «Young scientists to accelerate scientific-technical progress in the XXI century». Izhevsk. 2016. pp. 44–50.
20. Man-Soo J., Jangho L., Jae-Min C., Seung-Won J., Ho-Keun M. Quantitative study on Mannesmann effect in roll piercing of hollow shaft. Procedia Engineering. 2014. No. 81. pp. 197–202. DOI: 10.1016/j.proeng.2014.09.150.
21. Ohnuki A. et al. Surface behavior and temperature of plug piercing of seamless steel pipe. Journal of the Iron and Steel Institute of Japan. 1986. No. 7. pp. 450–457.
22. Galkin S. P., Romantsev B.A., Goncharuk A. V., Fadeev M. A. A. Trajectory-speed conditions for piercing process in screw rolling mills. Proizvodstvo prokata. 2007. No. 5. pp. 37–42.
23. Manegin Yu. V., Anisimova I. V. Glassy lubricants and protective coatings for hot processing of metals. Moscow: Metallurgiya, 1978. 224 p.
24. Vavilkin N. M., Bukhmirov V. V. Piercing plug. Moscow: MISiS, 2000. 128 p.