Chelyabinsk Pipe Rolling Plant (Chelyabinsk, Russia)

Komarov A. I., Advisor of Chairman of the Board
Nikitin K. N., Technical Director
Safyanov A. V., Cand. Eng., Technologist of Production Technological Dept., e-mail: anatoliy.safyanov@chelpipe.ru

Moscow Technological University (Moscow, Russia):
Osadchiy V. Ya., Dr. Eng., Prof., Advisor of General Director

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

Kolikov A. P., Dr. Eng., Prof.

The developed and theoretically proved innovative bimetallic tube production technology has been presented. Manufacture of tunes with the size 351×36 mm and 426×40 mm from 10GN2MFA steel with an inner cladding layer of 08Kh18N10T steel with thickness 7±2 mm is examined. The area of application of such tubes is nuclear energy plants. The developed tubes allow to decrease theoretical consumption ratio of 10GN2MFA steel for production of shells; consumption ratio of 08Kh18N10T steel for production of inserts; consumption ratio of both steels in tube rolling at TPU 8–16 unit with pilger mills; consumption ratio of metals during rolling of hot-rolled rube billets in commercial cold-rolled tubes in KhPT 450 mill, as well as to lower tube rejects by cladding thickness and numbers of KCU rejects at –10 °C for the main metal (10GN2MFA). The length of commercial tubes 351×36 mm is also increased by 2.4 times.

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9. Safyanov A. A., Fedorov A. A., Pashnin V. P. et al. Bimetal blank from (10GN2MFA+08X18N10T) grade steels and its fabrication for production of cold-rolled bimetal out 279×36 and out 346×40 mm size pipes with inner clad 7±2 mm deep ply from “08Х18Н10Т” grade steel for nuclear power structures. Patent RF, No.2554249. IPC V21V1/00, V21V19/00. Applier and patent-holder: JSC «Chelyabinsk Pipe-Rolling Plant». No. 2013129172/02. Applied: 25.06.2013. Published: 27.12.2014. Bulletin No. 36.
10. A. A. Safyanov, A. A. Fedorov, V. P. Pashnin et al. Bimetal blank out of steel grades (10GN2MFA+08X18N10T) to manufacture hot-rolled, machined, bimetal pipes with size vn279×36 mm for nuclear power facilities. Patent RF, No. 2567420. IPC V21V1/00. Applier and patent-holder: «Chelyabinsk Pipe-Rolling Plant». No. 2013114022/02. Applied: 28.03.2013. Published: 10.11.2015. Bulletin No. 31.
11. A. A. Safyanov, A. A. Fedorov, V. P. Pashnin et al. Method to produce hot-rolled mechanically treated bimetal pipes with size vn279×36 (351×36) and vn346×40 (426×40) mm from steel of grades 10GN2MFA+08X18N10T with internal plating layer of steel 08H18N10T with thickness of 7±2 mm. Patent RF, No. 2516137. IPC V21V21/00. Applier and patent-holder: JSC «ChTPZ». No. 2012149667/02. Applied: 21.11.2012. Published: 20.05.2014. Bulletin No. 13.
12. Technical Requirements 14-3-1393-88. «Wireless hot-rolled bimetallic pipes for nuclear power plants’ pipe-lines».