PROVISION OF THE TRACEABILITY OF MEASUREMENT UPON DETERMINATION OF THE GAS-FORMING ELEMENTS IN STEELS
https://doi.org/10.26896/1028-6861-2018-84-1(II)-41-45
Abstract
To ensure the traceability of measurements upon determination of carbon, sulfur, nitrogen and oxygen in steels sodium carbonate, sodium sulfate and potassium nitrate, respectively, are used for calibration of automatic analyzers. This approach places the methods of combustion and reductive fusion in the flow of inert gas on a par with the traditional classical chemical methods of determination which include the procedure of calibration by the substance of constant stoichiometric composition. We present the results of participation of the Test Analytical Center of the «Institute for Certified Reference Materials» in the inter-laboratory experiments on analysis of gas-forming elements in standard samples of steels and cast iron EURONORM-CRM.
About the Authors
T. S. Endeberya
Institute for Certified Reference Materials
Russian Federation
Russian Federation
Tatyana S. Endeberya.
YekaterinburgYu. N. Shakhova
Institute for Certified Reference Materials
Russian Federation
Russian Federation
Yuliya N. Shakhova.
YekaterinburgI. N. Zagorodnova
Institute for Certified Reference Materials
Russian Federation
Russian Federation
Inna N. Zagorodnova.
YekaterinburgReferences
1. ISO 9556:1989. Steel and Iron — Determination of Sarbon Content — Infrared Absorption Method after Combustion in an Induction Furnace.
2. ISO 4935:1989. Steel and Iron — Determination of Sulfur Content — Infrared Absorption Method after Combustion in an Induction Furnace.
3. Nustrova V. S., Kurbatova V. I., Endeberya T. S., et al. Increase of accuracy of determination of small amounts of nitrogen in steels / The accuracy of analytical control: a collection of articles. — Moscow: Metallurgiya, 1988. P. 58 – 60 [in Russian].
4. Interstate Standard GOST 4212–2016. Reagents. Metods of preparation of solutions for colorimetric and nephelometric analysis. — Moscow: Izd. standartov, 1988. — 22 p. [in Russian].
5. Smetanina T. S., Nustrova V. S., Kurbatova V. I., et al. Application of the photometric method to improve the accuracy of determination of microquantities of sulfur in nickel-based alloys / The accuracy of analytical control: a collection of articles. — Moscow: Metallurgiya, 1983. P. 52 – 54 [in Russian].
6. Endeberya T. S., Fedorova S. F., Zen’kova E. M. Application of standard sulfur solution for calibration of analyzers / Zavod. Lab. Diagn. Mater. 1993. Vol. 59. N 8. P. 8 – 11 [in Russian].
7. Fedorova S. F., Shakhova Yu. N., Endeberya T. S. The use of a standard solution for calibration the analyzer at the determination of nitrogen in steel by fusion in a current of inert gas / Standart. Obraztsy. 2011. N 2. P. 31 – 36 [in Russian].
8. Shakhova Yu. N., Endeberya T. S., Fedorova S. F. Application of standard solutions for analyzers calibraion at nitrogen and oxygen determination in standard samples of steel / Proc. of the First International Scientific Conference «Standard Samples in Measurements and Technologies». Part 2. — Yekaterinburg: Izd. FGUP «Ural’skii nauchno-issledovatel’skii institut metrologii», 2013. P. 161 – 164 [in Russian].
9. Fedorova S. F., Shakhova Yu. N., Endeberya T. S. Concerning the application of the standard solution of potassium nitrate for the calibration of the LECO TC-436 gas analyzer in determining oxygen in steel / Standart. Obraztsy. 2012. N 4. P. 64 – 69 [in Russian].
10. RF State Standard GOST R 8.824–2013/ISO Guide 34:2009. State system for ensuring the uniformity of measurements. General requirements for the competence of standard sample manufacturers. — Moscow: Standartinform, 2015. — 33 p. [in Russian].
Review
For citations:
Endeberya T.S., Shakhova Yu.N., Zagorodnova I.N. PROVISION OF THE TRACEABILITY OF MEASUREMENT UPON DETERMINATION OF THE GAS-FORMING ELEMENTS IN STEELS. Industrial laboratory. Diagnostics of materials. 2018;84(1(II)):41-45. (In Russ.) https://doi.org/10.26896/1028-6861-2018-84-1(II)-41-45
Views:
509
Email this article 