Chelyabinsk Pipe Rolling Plant (Chelyabinsk, Russia):

Nikitin K. N., Technical Director

Safyanov A. V., Cand. Eng., Technological Engineer, Dept. of Production Researches, e-mail: anatoliy.safyanov@chelpipe.ru

Bubnov K. E., Chief Specialist on Seamless Tubes Production

Moscow Technological University (Moscow, Russia):
Osadchiy V. Ya., Dr. Eng., Prof., the Chair «Metal and Plastic Forming», USSR State Award Winner

National University of Science and Technology “MISiS” (Moscow, Russia):
Kolikov A. P., Dr. Eng., Prof.

Innovative heating procedures of ingots-billets after electric slag remelting (ESR), their piercing in helical rolling mill in hollow billets and consequent rolling of hollow billets at pilger mills in 290x12 mm rough tubes are developed and put into practice. The roll pass design for the rolls of a pilger mill is also developed and put into operation to roll rough tubes. Optimal dimensions of ingots-billets for manufacture of rough tubes with 4- and 5-fold length are determined. Implementation of the complex of these investigations allowed to obtained the average metal consumption coefficient to 3.403 and to rise productivity of the tube rolling unit 8–16” with pilger mills more than by six times. It is the first case in the world practice, when production of seamless hotrolled rough tubes with dimensions 290x12 mm and with length 21–23 m, made of boron-containing steel 04Х14Т3Р1Ф-Ш (04Kh14T3R1F-Sh), has been undertaken in the conditions of Chelyabinsk Pipe Rolling Plant directly from ESR billets. This technology includes also consequent fabrication of hexagonal billet tubes of turnkey size (257+2/–3) x (6+2/–1) x (4300+80/–30) mm for compact storage in the holding basins at nuclear power stations and for transportation of worked nuclear fuel.

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3. Otchet po NIR «Osvoenie tekhnologii proizvodstva goryachekatanykh trub bolshogo diametra iz stali ChS 82 v usloviyakh TPA 350 YuTZ». GR No. 01870000456 (Report about the Scientific and Research Work «Mastering of technology of production of large hot-rolled tubes from the steel ChS 82 in the conditions of TPA 350 YuTZ. GR No. 01870000456). Dnepropetrovsk, 1988. (in Russian)
4. Safyanov A. V., Nikitin K. N., Dukmasov V. G. et al. Sovershenstvovanie tekhnologii proizvodstva chekhlovykh shestigrannykh trub dlya khraneniya otrabotannogo yadernogo topliva (Improvement of technology of production of hexagonal shroud tubes for the storage of nuclear waste). Stal = Steel in Translation. 2005. No. 8. pp. 69–72.
5. A. A. Fedorov, A. V. Safyanov, V. V. Ignatev et al. Sposob proizvodstva trubnykh zagotovok dlya izgotovleniya shestigrannykh trub-zagotovok iz nizkoplastichnoy stali s soderzhaniem bora 1,3–1,8% (Method of production of tube stock for manufacturing of hexagonal ones from low-ductile steel with 1,3–1,8% of boron). Patent RF, No. 2226133. Published: 27.03.2004. Bulletin No. 9.
6. A. V. Safyanov, A. A. Fedorov, S. G. Chikalov et al. Sposob proizvodstva peredelnykh trub iz nizkopla stichnoy stali s soderzhaniem bora 1,3–1,8% (Method of production of tube stock from low-ductile steel with 1,3–1,8% of boron). Patent RF, No. 2255820. Published: 27.12.2004. Bulletin No. 19.
7. Safyanov A. V., Burakov A. P., Osadchiy V. Ya. et al. Puti snizheniya raskhoda metalla pri proizvodstve shestigrannykh trub-zagotovok razmerom «pod klyuch» 257+2/–3kh6+2/–1kh4300+80/–30 mm iz borsoderzhashchikh marok stali dlya transportirovki i uplotnennogo khraneniya otrabotannogo yadernogo topliva (Methods of decrease in metal consumption when manufacturing of hex 257×6×4300 mm tubes made of boron-containing steel and intended for storage of spent nuclear fuel). Proizvodstvo prokata = Rolled Products Manufacturing. 2014. No. 8. pp. 15–20.
8. A. V. Safyanov, A. A. Fedorov, V. I. Tazetdinov et al. Valok piligrimovogo stana dlya prokatki peredelnykh trub razmerom 290×(11–12) mm iz nizkoplastichnykh borsoderzhashchikh staley 04Kh14T3R1F-Sh i 04Kh14T5R2F-Sh (Roll of step-rolled mills for tube stock (290×(11–12) mm) from low-ductile boron-bearing steels 04Kh14T3R1F-Sh and 04Kh14T5R2F-Sh). Patent RF, No. 2516148. Published: 20.05.2012. Bulletin No. 14.
9. A. V. Safyanov, V. P. Borisov, A. A. Fedorov et al. Sposob proizvodstva chekhlovykh shestigrannykh trub iz nizkoplastichnoy stali s soderzhaniem bora 1,3–1,8% (Method of production of shroud hexagonal tubes from low-ductile steel with 1,3–1,8% of boron). Patent RF, No. 2246363. Published: 20.02.2005. Bulletin No. 8.
10. A. V. Safyanov, A. A. Fedorov, L. I. Lapin et al. Sposob proizvodstva peredelnykh trub na truboprokatnykh ustanovkakh s piligrimovymi stanami iz nizkoplastichnoy stali s soderzhaniem bora 1,3–1,8% (Method of production of tube stock on tube-rolling units with step-rolled mills from low-ductile steel with 1,3–1,8% of boron). Patent RF, No. 2334571. Published: 27.09.2008.
11. A. V. Safyanov, A. A. Fedorov, V. I. Tazetdinov et al. Sposob proizvodstva peredelnykh trub razmerom 290×12 mm na TPU 8-16» s piligrimovymi stanami iz slitkov-zagotovok elektroshlakovogo pereplava nizkoplastichnykh staley marok 04Kh14T3R1F-Sh i 04Kh14T5R2F-Sh s soderzhaniem bora ot 1,3 do 3,5% dlya izgotovleniya shestigrannykh trub-zagotovok razmerom «pod klyuch» 257+2/−3×6+2/−1×4300+80/−30 mm dlya uplotnennogo khraneniya v basseynakh vyderzhki AES i transportirovki otrabotannogo yadernogo topliva (Method of production of tube stock (290×12 mm) on mechanical displacement provers (TPU 8-16») with step-rolled mills from cakes of electroslag remelting of low-ductile steels 04Kh14T3R1F-Sh and 04Kh14T5R2F-Sh with 1,3 – 3,5% of boron for manufacturing of hexagonal tube stock (257+2/−3×6+2/−1×4300+80/−30 mm) for packed storing in the cooling ponds of the nuclear power plants and transporting of nuclear waste). Patent RF, No. 2511199. Published: 10.04.2012. Bulletin No. 10.