Pervouralsk New Tube (Novotrubny) Works (Pervouralsk, Russia):

V. A. Maltsev, e-mail: vyacheslav.maltsev@chelpipe.ru
I. N. Bazhukov
An. V. Serebryakov, Cand. Eng., e-mail: andrey.serebryakov@chelpipe.ru

Russian Research Institute of Tube and Pipe Industries — Pervouralsk affiliate (Pervouralsk, Russia):
B. Ya. Mitberg, Cand. Eng.,
V. G. Mironov, Cand. Eng.

Ural Federal University (Ekaterinburg, Russia):
Al. V. Serebryakov, Cand. Eng.
A. A. Bogatov, Dr. Eng.

In JSC Pervouralsk New Pipe Works the technological aspects of the mastering stainless steel pipe rolling in the cold pilger mill 10-45 designed by JSC VNIIMETMASH are considered. The technical features of the 10-45 mill and the results of pilot pipe rolling on it are presented. The high stability of the rolled pipe quality, increased service life of technological tools and the increased mill capacity have been achieved in comparison with the tubes rolled at conventional mills, e.g. cold pilger mill 32 at Electrostal metallurgical works. Low tube surface roughing provides elongation of the service life of stainless heat exchanger tubes for stem generators in nuclear power stations in the framework of solving the problem of increase of nuclear power stations service life from 30 to 60 years and more. It is also displayed that actual productivity of the cold pilger mill 10-45 is appr. 25-35 % higher than for Electrostal mill. Usage of liquid technological lubrication allowed to exclude the expensive operations of applying graphite lubricant and its removal in the high-temperature alkalisalpeter This allows it to be effectively used as a head unit in a production line and to move in the prospect to expanding of dimension range of rolled tubes to smaller sizes.

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