20CrMn钢双辊振动铸轧薄带性能的试验

doi:10.13228/j.boyuan.issn0449-749x.20180226

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Abstract In order to investigate the influence of the mechanical vibration applied in the technology of twin-roll strip cast-rolling on the microstructure and mechanical properties of the cast-rolling strip，a ?500 mm×350 mm micro-amplitude twin-roll strip cast-rolling mill was designed and manufactured. The casting mill was used as an experimental platform for a number of process exploration experiments，and the reasonable process parameters that could achieve stable production of twin-roll vibratory cast-rolling strips were finally determined. Then the microstructure and mechanical properties of the 20CrMn alloy steel cast-rolling strip obtained under vibratory and vibrationless conditions were tested and analyzed. The microstructure observation result shown that the average grain size of the normal surface of the vibratory cast-rolling strip reduced from 70 to 35 μm compared with the vibrationless one，and the grains on the vibratory and the vibrationless side of the longitudinal section of the vibratory cast-rolling strip were also refined to different degrees.The tensile test result shown that the yield strength，tensile strength and elongation of the vibratory cast-rolling strip in the vertical-rolling direction were respectively 21.36%，27.35%，42.86% higher than those of the conventional vibrationless cast-rolling strip. The above research results prove that mechanical vibration can effectively improve the microstructure，refine the grains，and improve the mechanical properties of the strip.

Key words： 20CrMn alloy steel twin-roll casting mechanical vibration grain size mechanical properties

Received: 31 May 2018 Published: 24 December 2018

PACS:

TF777.1

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	Articles by authors
	WEI Ji-Beng
	XU Zhi-Jiang
	XUN Meng-Han
	ZHU Zhi-Wang
	YU Hai-Jun
	DU Feng-Shan

Cite this article:

WEI Ji-Beng,XU Zhi-Jiang,XUN Meng-Han等. Experimental research of vibratory cast-rolling strips for 20CrMn alloy steel[J]. Iron and Steel, 2018, 53(12): 118-121.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20180226 OR http://www.chinamet.cn/Jweb_gt/EN/Y2018/V53/I12/118

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