Abstract
A high speed steel composite roll billet was fabricated, which is regular in shape, smooth in surface, slight in trace, compact in internal structure, free of slag inclusion, shrinkage cavity, cracks and other flaws, and good in macro quality of junction surface using a vertical continuous casting machine. The interface zone microstructure of bimetallic in billet of high speed steel composite roll was analyzed by metallurgical microscope (OM), X-ray diffractmeter (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDS). The results indicate that the microstructure of roll billet is composed of chilled solidified layer, dendrite zone, interfacial zone of bimetal and core material zone. The microstructure of outer shell material is composed of martensite + bainite + residual austenite + some small labyrinth-shape, small-short lath-shape, or dollop-shape eutectic carbides. The microstructure of core material is slice-shape pearlite and a little ferrite along boundary of cells. The interface region microstructure of bimetallic composite roll consists of diffusion region, chilled solidified layer and columnar grain region.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
WALMAG G, SKOCZYNSKI R J, BREYER J P. Improvement of the work roll performance on the 2050mm hot strip mill at Iscor Vanderbijlpark [J]. La Revue de Metallurge-CIT, 2001 (3): 295–304.
KUNIO G, YUKIO A. Basic characteristics and microstructure of high-carbon high speed rolls for rolling mill [J]. ISIJ International, 1992, 32(11): 1131–1140.
SANO Y, THATTORI T, HAGA M. Characteristics of high-carbon high speed steel rolls for hot strip mill [J]. ISIJ International, 1992, 32(11): 1194–1201.
ICHINO K, KATAOKA Y, KOSEKI T. Development of centrifugal cast roll with high wear resistance for finishing stands of hot strip mill [J]. Kawasaki Steel Technical Report, 1997, 37(8): 13–19.
FENG Ming-jie, WANG Eng-gang, WANG Jun-gang, HE Ji-cheng. High speed steel composite roll and its heat treatment [J]. China Metallurgy, 2006, 16(10): 14–19. (in Chinese)
FU Hang-guang, XING jian-dong. A fundamental research of electromagnetic centrifugal cast high speed steel roll [J]. Steel Research International, 2007, 78(3): 266–272.
HASHIMOTO M M, OTOMO S. Development of high speed steel composite roll by continuous pouring process for cladding [J]. ISIJ International, 1992, 32(11): 1202–1209.
SHIMIZU M, SHITAMURA O, MATSUO S. Development of high performance new composite roll [J]. ISIJ International, 1992, 32(11): 1244–1249
FU Hang-guang. Present situation and forecast of study on high speed steel roll [J]. Iron and Steel, 2000, 35(5): 67–73. (in Chinese)
ZHOU Li, HE Jiang-ai, WANG Yu-wei. Technology and development tendency of making roller [J]. Foundry, 2002, 51(11): 666–670. (in Chinese)
GONG Kai-ling, DONG Yia-jun, GAO Chun-li. Research and manufacture of compound high speed steel rolls [J]. Iron and Steel, 1998, 33(3): 67–71. (in Chinese)
SHAO Kang-zhen, WEI Shi-zhong, LONG Rui. Idea and practice of electromagnetic hemi-continuous double pouring casting rolls [J]. Foundry, 2006, 55(2): 160–163. (in Chinese)
YANG Guo-ming. A manufacture method for composite roll [P]. China Patent, ZL96114043, 2002. (in Chinese)
LUAN Yi-kun, BAI Yun-long, SONG Nan-nan, KANG Xiu-hong, LI Dian-zhong. Heat treatment of high speed steel used for centrifugal cast rolls [J]. Acta metallurgica Sinica, 2009, 45(4): 470–475. (in Chinese)
HWANG K C, LEE S, LEE H C. Effects of alloying elements on microstructure and fracture properties of cast high speed steel roll: Part I [J]. Materials Science Engineer A, 1998, 24(1): 282–295.
LUAN Y K. SONG N N, BAI Y L, KANG X H, LI D Z. Effect of solidification rate on the morphology and distribution of eutectic carbides in centrifugal casting high speed rolls [J]. Journal Materials Processing Technology, 2010, 210(3): 536–541.
FENG Ming-jie, WANG Eng-gang, WANG Jun-gang, LUO Chun-min, WANG Kai, HE Ji-cheng. Liquid-solid bonded interface of W9Mo3Cr4V/45 steel composite roll [J]. Journal Iron Steel Research, 2009, 20(9): 36–41. (in Chinese)
LIU Yao-hui, LIU Hai-feng, YU Si-rong, GUO Guo-chao, WANG Jia-wang. Study on interface of high speed steel/structural steel bimetal composite [J]. Special Casting & Nonferrous Alloys, 2001, 21(2): 17–19. (in Chinese)
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Project(200809123) supported by the National Natural Science Foundation of China
Rights and permissions
About this article
Cite this article
Li, Gj., Feng, Mj. Experimental research on electromagnetic continuous casting high-speed steel composite roll. J. Cent. South Univ. 21, 849–856 (2014). https://doi.org/10.1007/s11771-014-2009-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-014-2009-1