The Degassing Laws for Railway Wheel Steel in a Vacuum Tank Degasser-Reference-Cited by-同舟云学术

The Degassing Laws for Railway Wheel Steel in a Vacuum Tank Degasser

Published:2021-08-17 Issue: Volume:410 Page:269-274
ISSN:1662-9507
Container-title:Defect and Diffusion Forum
language:
Short-container-title:DDF

Author:

Smirnova Elizaveta A.¹,Eliseeva Irina A.¹,Shapovalov Aleksey N.¹

Affiliation:

1. National University of Science and Technology “MISiS”

Abstract

The research presents the results of data analysis on degassing of wheel grades of steels in a tank degasser with a capacity of 120 tons, operated at the JSC “Ural Steel”. The volume of the analyzed sample included 754 steels for railway wheels (steel grades “2” and “T” according to State standard GOST 10791-2011) weighing more than 80 thousand tons received in November-December 2019.It was established that in order to guarantee the production of hydrogen content of less than 1.5 ppm and nitrogen before 0.007%, it is necessary to carry out vacuum treatment of metal with overheating of 110-130°C at the residual pressure of up to 3 mbar for 20-25 minutes and argon flow rate of at least 0.05 m3/ton. The regression equation was obtained, which allows to predict the results of degassing, as well as select the values of vacuum treatment parameters in order to achieve a given content of dissolved gases - hydrogen and nitrogen.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Radiation

Link

https://www.scientific.net/DDF.410.269.pdf

Reference22 articles.

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