Adding Nitrogen Process for V-N Non-Quenched and Tempered Steel during 45 t LF (VD) Refining

The effect of alloy elements, LF and VD process parameters on LF (VD) adding nitrogen in V-N nonquenched and tempered steel (% ：0.42C, 0.62Si, 1.42Mn, 0.11V, 0.015N) during refining with nitrogen blowing have been tested and analyzed. Results showed that with adding nitrogen fixed elements V, Cr and...

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Bibliographic Details
Published in:Teshugang
Main Authors: Lǚ Xuefei, Cong Huayue, Zhang Yu, Wang Yongsheng, Qiao Bing
Format: Article
Language:Chinese
Published: Editorial Office of Special Steel 2009-12-01
Subjects:
V-N Non-Quenched and Tempered Steel
LF (VD)
Adding Nitrogen
Nitrogen Yield
Online Access:http://www.specialsteeljournal.com/thesisDetails?columnId=129776976&Fpath=home&index=0
Description
Summary:The effect of alloy elements, LF and VD process parameters on LF (VD) adding nitrogen in V-N nonquenched and tempered steel (% ：0.42C, 0.62Si, 1.42Mn, 0.11V, 0.015N) during refining with nitrogen blowing have been tested and analyzed. Results showed that with adding nitrogen fixed elements V, Cr and Mn at early refining phase, quickly raising liquid steel refining temperature to 1620 ~ 1630 ℃ and increasing refining nitrogen blowing time, the average adding nitrogen rate in liquid steel increased to 2.83 x 10<sup>-6</sup>/min； and with nitrogen stirring during VD treatment and controlling VD treated time, it was available to increase nitrogen yield.
ISSN:1003-8620

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