About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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General Poster Session
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Presentation Title |
M-85: Microstructural and Mechanical Properties of Pinch Rolls Fabricated by Horizontal Centrifugal Casting |
Author(s) |
Kyeongsoon Park, G.W. Jung, H.Y. Hong, D.H. Kim, N.K. Yi, C.K. Kim |
On-Site Speaker (Planned) |
Kyeongsoon Park |
Abstract Scope |
Pinch-rolls are utilized to guide the hot-rolled strips to the coiler mandrel. The outer surface of the pinch rolls is very wear-resistant. In this work, we fabricated the pinch rolls by a horizontal centrifugal casting and studied their microstructural and mechanical properties. Molten Fe-Ni-Cr-Mo-X alloy steels were directly poured into a mold that rotated about horizontal axis. The molten alloy steels were spread on the inside mold wall and solidified after cooling. The microstructure, tensile strength, wear resistance, and micro-hardness were investigated. We found a slight change in microstructure and micro-hardness at the mixed regions of outer and inner layers along the thickness direction. The fracture surfaces of tensile tested samples were also investigated to identify the fracture characteristics, showing a mixed transgranular and intergranular mode. The structural and mechanical properties of the pinch rolls were optimized by controlling chemical composition and centrifugal casting and heat treatment processes.
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Proceedings Inclusion? |
Undecided |