一种低合金耐热焊丝钢盘条的研制

doi:10.13228/j.boyuan.issn0449-749X.20140044

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Abstract The continuous cooling transformation (CCT) kinetics in the designed thermo mechanical processing conditions was investigated for 1.25Cr-0.5Mo steel employing a Gleeble-3800 thermo mechanical simulator, and plant trial of the wire rod was conducted in the high speed wire rod production line. The CCT experimental results suggest that the sample under deformation temperatures of both 950 and 1 000 ℃ both produced a microstructure of ferrite (F) and martensite (M), and the fraction and size of M decreased with the deformation temperature and cooling rate. The optimization of rolling schedule at industrial facilities showed that a combination of finishing rolling temperature at 950 ℃, the spinning temperature at 870-890 ℃ and the cooling rate at 0.3-0.5 ℃/s produced a welding wire with a microstructure of F+M and tensile strength below 830 MPa. Fracture of wire doesn’t occur during the drawing process which was smooth.

Key words： Heat-resistant welding wire steel Continuous cooling transformation Martensite Stelmor line

Received: 21 January 2014 Published: 13 October 2014

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	Articles by authors
	GUO Hui-Yang
	ZHANG Yu
	XU Hong-Mei
	YU Yin-Bai

Cite this article:

GUO Hui-Yang,ZHANG Yu,XU Hong-Mei等. Development of Low Alloy Heat Resisting Welding Wire[J]. Iron and Steel, 2014, 49(10): 66-70.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749X.20140044 OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I10/66

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