Журналы →  Chernye Metally →  2014 →  №5 →  Назад

Development of metallurgy in Russia and CIS
Название Stability evaluation of the yield strength of the tubes using for steam generators of nuclear power plants
Автор S. I. Parshakov, Al. V. Serebryakov, An. V. Serebryakov, S. B. Prilukov, V. V. Maltsev
Информация об авторе

Ural Federal University (Ekaterinburg, Russia):

Parshakov S. I., Cand. Eng., Ass. Prof.

 

“Novye tekhnologii trub” (“New tube technologies”) LLC (Ekaterinburg, Russia):

Serebryakov Al. V., Cand. Eng., Director

 

Pervouralsk New Pipe Plant (Pervouralsk, Russia):

Serebraykov An. V., Cand. Eng., Head of Scientifi c Research Dept., Scientifi c Engineering Center, e-mail: andrey.serebryakov@chelpipe.ru
Prilukov S. B., Head of technological Dept.
Maltsev V. V., Cand. Eng., Head of the Shop

Реферат

Analysis of the yield strength at 350 °C metal tubes, presented for control during the dual-year period, is made. Statistical relations between the control and measuring results of the yield strength and manufacturing date together with chemical composition of the metal melt are analyzed. It is concluded that minimal and maximal values of the yield strength in these tube batches don't exceed allowed deviations. The presented statistical data testifi es about the distinct tendency of variation of the yield strength values, though amplitude of these values is stable during dual-year period, meaning stability of the technological process. Essential relationship between a melt number and parameters of distribution of the yield strength inside the melt has been revealed; it means indirectly about influence of different chemical compositions of melts. Deviation of chemical composition of diff erent melts can be decreased via lowering of phosphorus content and/or elevation of silicon content in the framework of allowed values. It is shown that the replacement of continuous sampling by randomized control does not vary the risk of the consumer substantially. Reliability of obtained results has been confirmed.

Ключевые слова Tubes for steam generators, yield strength, stability, variance and regression analysis, sampling control
Библиографический список

1. Trunov N. B., Luksevich B. I., Sotskov V. V. et al. Proshloe i budushchee gorizontalnykh parogeneratorov (Past and future of horizontal steam generators). Available at: http://www.gidropress.podolsk.ru/files/proceedings/seminar7/documents/f55.pdf (accesed: April 09, 2013).
2. Rossiya v BRIKS (Russia in BRICS). Available at: http://www.mid.ru/brics.nsf/WEBNovBric/C325786100462DFE432579DB006AA18A (accessed: April 09, 2013).
3. Available at: http://protect.gost.ru/document.aspx?control=7&id=177075
4. R Development Core Team (2011). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0. Available at: http://www.R-project.org/ (accessed: June 20, 2012).
5. GOST R 50779.30-95. Statisticheskie metody. Priemochnyy kontrol kachestva. Obshchie trebovaniya (State Standard R 50779.30-95. Statistic methods. Acceptance quality control. General requirements).
6. GOST R 50779.42-99 (ISO 8258-91). Statisticheskie metody. Kontrolnye karty Shukharta (State Standard R 50779.42-99 (ISO 8258-91) Statistic methods. Shewhart charts).
7. GOST R 50779.52-95. Statisticheskie metody. Priemochnyy kontrol kachestva po alternativnomu priznaku (State Standard R 50779.52-95. Statistic methods. Acceptance quality control by alternate characteristic).
8. GOST R 50779.71-99 (ISO 2859.1-89). Protsedury vyborochnogo kontrolya po alternativnomu priznaku. Chast 1. Plany vyborochnogo kontrolya posledovatelnykh partiy na osnove priemlemogo urovnya kachestva AQL (State Standard R 50779.71-99 (ISO 2859.1-89). Procedures of sampling control by alternate characteristic. Part 1. Plans of sampling control of serial parties on the basis of AQL).
9. GOST R 50779.72-99 (ISO 2859.2-85). Protsedury vyborochnogo kontrolya po alternativnomu priznaku. Chast 2. Plany vyborochnogo kontrolya otdelnykh partiy na osnove predelnogo kachestva LQ (State Standard R 50779.72-99 (ISO 2859.2-85). Procedures of sampling control by alternate characteristic. Part 2. Plans of sampling control of separate parties on the basis of LQ).
10. GOST R 50779.73-99 (ISO 2859.3-91). Protsedury vyborochnogo kontrolya po alternativnomu priznaku. Chast 3. Protsedury vyborochnogo kontrolya s propuskom partiy (State Standard R 50779.73-99 (ISO 2859.3-91). Procedures of sampling control by alternate characteristic. Part 3. Procedures of sampling control with passing of parties).
11. GOST R 50779.75-99 (ISO 8422-91). Plany posledovatelnogo vyborochnogo kontrolya po alternativnomu priznaku (State Standard R 50779.75-99 (ISO 8422-91). Plans of serial sampling control by alternate characteristic).
12. ISO/TO 8550-94. Rukovodstvo po vyboru sistemy, skhemy i plana vyborochnogo priemochnogo kontrolya shtuchnykh izdeliy v partiyakh produktsii (ISO/TO 8550-94. Guidance on choice of system, scheme and plan of acceptance sampling of piece works in production-run).
13. Kobzar A. I. Prikladnaya matematicheskaya statistika. Dlya inzhenerov i nauchnykh rabotnikov (Applied mathematical statistics. For engineers and scientific workers). Moscow : FIZMATLIT, 2006. 816 p.

Language of full-text русский
Полный текст статьи Получить
Назад