超快速冷却工艺对钢材强度的影响

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Abstract The ultra-fast cooling mechanism of rolled stock was investigated. The experiment was carried out on H-beam by using ultra-fast cooling device of Northeastern University. The effects of different cooling rates and cooling methods on structure and properties of Q235B and Q345B rolled stocks after rolling were analyzed. The results show that the strength is improved by 205MPa at 444.4℃/s of cooling rate by using single-stage cooling. The strength is improved by 230MPa by using two-stage cooling, when the cooling rate reaches to 385 and 297℃/s. Two types of cooling methods can both dramatically improve the strength of rolled stocks. Where as the cooling effect of two-stage cooling is apparently higher than single-stage cooling. It will provide technical supports for realizing low cost industrial production of H-beam and production of higher level steel.

Received: 08 October 2011 Published: 30 October 2012

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	Articles by authors
	YUAN Peng-Ju
	WU Di
	DIAO Xian-Meng
	FU Chang-Wei
	SUO Xi-Wei

Cite this article:

YUAN Peng-Ju,WU Di,DIAO Xian-Meng等. Effect of Ultra-Fast Cooling on Steel Strength[J]. Iron and Steel, 2012, 47(10): 57-60.

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http://www.chinamet.cn/Jweb_gt/EN/ OR http://www.chinamet.cn/Jweb_gt/EN/Y2012/V47/I10/57

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