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http://dx.doi.org/10.5916/jkosme.2012.36.2.276

A Study on Improvement of Durability for Run-out Table Roller with Hot Rolling by Porous Self-fluxing Alloy Coating  

Bae, Myung-Whan (경상대학교 공과대학 기계공학부)
Park, Byoung-Ho (경상대학교 대학원)
Jung, Hwa (한국폴리텍VII대학 진주캠퍼스 컴퓨터응용기계과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.2, 2012 , pp. 276-285 More about this Journal
Abstract
The objective of this research is to develop the coating technique by a porous self-fluxing alloy for improving the mechanical properties of run-out table roller surface with the hot rolling. To enhance the durability of run-out table roller with the hot rolling, the high hardness of roller surface should be maintained at high temperatures, and the improvement of wear resistance, corrosion resistance, heat resistance, burn resistance and adhesion resistance should be maintained. In order to be able to transport reliably a hot rolled steel sheet, also, the appropriate friction coefficient on the roller surface should be maintained and the slip between roller and steel should not occur. In this study, the wear resistance of roller increases after the self-fluxing alloy is changed to a cermet by adding the tungsten carbide(WC), and the coefficient of friction increases and the ability of grip is improved because the porosities are made by coating with fine iron powder on the roller surface. As a result, it is found that the ability of grip between the steel and the roller coated by a porous self-fluxing alloy contained to 5 ~ 10 wt% of Fe in the coating layer is improved compared to the roller coated by Ni-Cr. This is because the porosities are made after Fe contained in the roller is partially alloyed by heating with a furnace in the fusing process and the rest is eliminated by oxidation and dissolution.
Keywords
Run-out Table Roller; Porous Self-Fluxing Alloy; Hot Rolling; Durability; Ability of Grip;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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