Challenges of Producing Quality Construction Steel Bars in West Africa:Case Study of Nigeria Steel Industry

Sanmbo Balogun, David Esezobor, Samson Adeosun, Olatunde Sekunowo

Department of Metallurgical and Materials Engineering,University of Lagos, Nigeria 23401.

DOI: 10.4236/jmmce.2009.84025                

Abstract

The production of quality high-yield reinforcing steel bars continues to receive attention from researchers across the globe due to its importance and contribution to a country GDP. In most of the developing countries, particularly Nigeria, empirical studies have shown that bars produced through conventional rolling requires appropriate modification of its chemical composition in order to obtain the desired mechanical properties such as strength. However, the high cost factor involved in composition adjustment makes such approach unattractive. Rather, the application of the combination of systems of controlled rolling and controlled cooling proves to be the best option. This system however, requires some variations in processing parameters to suit individual plant production peculiarities. In this paper attempt is made to study the production challenges and opportunities the steel millers are facing in Nigeria. Previous works in this area are also reviewed with a view to charting the way forward. Experimental studies and process monitoring were carried out at some designated rolling mills in Nigeria.

Keywords

Mild steel, bar, strength, controlled rolling/cooling, thermo-mechanical, conventional-mill,

Conflicts of Interest

The authors declare no conflicts of interest.

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