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Open AccessArticle

Tempcore Process Simulator to Analyze Microstructural Evolution of Quenched and Tempered Rebar

1
R&D Center, Dongkuk Steel, 70 Geonposaneop-ro, 3214beon-gil, Nam-gu, Pohang, Gyeongsangbuk-do, Korea
2
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
3
School of Mechanical Engineering, Pusan National University, 30 Jangjeon-dong, Geumjeong-gu, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(14), 2938; https://doi.org/10.3390/app9142938
Received: 30 June 2019 / Revised: 21 July 2019 / Accepted: 22 July 2019 / Published: 23 July 2019
(This article belongs to the Special Issue Extreme Sciences and Engineering)
Tempcore process simulator (TPS) has been developed in this study to analyze the microstructural evolution of quenched and tempered rebar. There has been an increasing need to relate the complex microstructures to the resulting properties of quenched and tempered rebar. However, information on such relationships typically requires precise thermal histories imposed on the workpiece. Therefore, TPS, capable of simulating the Tempcore process, has been developed to produce high-fidelity data. TPS mainly consists of a vacuum induction furnace, pilot rolling mill, box furnace, and cooling unit to simulate shop floor operations. A series of experimental tests were successfully carried out with various parameters, such as reheating temperature, water flow, water pressure, and cooling time. The effects of chemical compositions and cooling time on the microstructural evolution and mechanical properties of quenched and tempered rebar have been analyzed to validate the performance of TPS. The results show that TPS can simulate the Tempcore process with a high degree of fidelity and reliability. View Full-Text
Keywords: process simulator; Tempcore; rebar; microstructure; quenching; self-tempering process simulator; Tempcore; rebar; microstructure; quenching; self-tempering
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MDPI and ACS Style

Park, C.S.; Yi, H.J.; Kim, Y.-T.; Han, S.W.; Lee, T.; Moon, Y.H. Tempcore Process Simulator to Analyze Microstructural Evolution of Quenched and Tempered Rebar. Appl. Sci. 2019, 9, 2938.

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