Comparative Study between Pure Calcium Cored Wire and Conventional Cored Wire (CaSi, CaFe) Addition for Secondary Refining of Steel

Kumar Abhishek¹ , Rajib Khanda² , Dipankar Biswas³ , Kiran Kumar Keshari⁴ , K Rama Krishna⁵

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.1 , pp.7-17, Mar-2022

Online published on Mar 31, 2022

Copyright © Kumar Abhishek, Rajib Khanda, Dipankar Biswas, Kiran Kumar Keshari, K Rama Krishna . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
With over five years of experience of using conventional cored wire (CaSi/CaFe), the steel melting shop under consideration felt the need for switching over to an alternate option in view of the problems, like low yield, high wire consumption, frequent wire breakage during wire feeding and SEN clogging, faced with conventional wire. For this, and to keep up with the changing trend in steel plants worldwide in secondary refining technology, the shop turned to the use of pure Ca cored wire for better results. For exploring the benefits of this type of wire under the shop’s operating conditions, plant trials were conducted with pure Ca cored wire from three different suppliers on supply and application basis. From this exercise, it was found that pure Ca cored wire fared better than conventional wire on all fronts. Substantial difference was found in yield and wire consumption of the two types of wire. Wire consumption decreased by more than half and yield improved almost four times. These results were substantiated by data and plots in the study. Secondary refining time reduced but was not appreciable. Other noticeable benefits included no wire breakage during wire feeding, no clogging during casting and higher shelf life of the wire apart from consistency in result. The trials proved pure Ca cored wire to be a promising substitute for conventional wire. Therefore, the plant is looking forward to establish its usage at its steel melting shop. The aim of this paper is to present a succinct description of the details of the trials.

Key-Words / Index Term :
conventional wire, pure Ca wire, Ca cored wire, CaSi, CaFe, recovery

References :
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