Reusability of metallurgical slag waste in submerged arc welding powder for hardfacing

Mustafa Kaptanoglu; Mehmet Eroglu

doi:10.3139/120.111468

Article

Reusability of metallurgical slag waste in submerged arc welding powder for hardfacing

Mustafa Kaptanoglu and Mehmet Eroglu

Published/Copyright: January 27, 2020

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From the journal Materials Testing Volume 62 Issue 2

Abstract

Slag waste generated during the metallurgical process in a ferrochromium plant in Elazig, Turkey, ferro alloys and other required ceramic based powders were mixed to obtain recycled powders produced by submerged arc welding using the agglomeration method. High carbon ferrochromium was also added to the recycled powder mixtures to improve the microstructure, hardness, and wear properties of SAE 1020 steel using a submerged arc welding technique for hardfacing. After the powder production and welding process, there were no crack and porosities on the surface of the hardfacings. As the amount of high carbon ferrochromium in the recycled powders increased, homogeneity and slag removal properties of the hardfacings decreased. Their microstructures changed, macrohardness values increased, and wear losses decreased. The highest macrohardness value 46 HRC and the lowest wear loss 4.8 g were observed in hardfacing obtained using the recycled powder with 16 wt.-% high carbon ferrochromium.

* Correspondence Address, Dr. Mustafa Kaptanoglu, Department of Metallurgy and Materials Engineering, Engineering Faculty, Firat University, Elazig, Turkey E-mail: mkaptanoglu@firat.edu.tr

Dr. Mustafa Kaptanoglu (0000-0002-6295-610X), born in 1981, graduated from the Metallurgy and Materials Engineering Department of Cumhuriyet University, Sivas, Turkey in 2006. He obtained his MSc degree in 2011 and completed his PhD degree in 2016 in the Metallurgy and Materials Engineering Department of Firat University, Elazig, Turkey. He is currently Research Assistant in the Metallurgy and Materials Engineering Department of Firat University, Elazig, Turkey. His research area includes coating, hardfacing, heat treatment, non-destructive testing, welding technolgy etc.

Prof. Dr. Mehmet Eroğlu (0000-0002-5097-1943), born in 1969, works at Firat University, Engineering Faculty, Metallurgy and Materials Engineering Department, Elazig, Turkey. He obtained his PhD degree in the Metallurgy and Materials Engineering Department of Firat University, Elazığ, Turkey in 1998. His area of research includes material science, polymers, heat treatment, non-destructive testing, coating, welding technolgy etc.

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Published Online: 2020-01-27

Published in Print: 2020-02-03

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https://doi.org/10.3139/120.111468