Study on Microstructure and Performance of Bead-on-Plate Weld Metal on 21CrMoV5.11 Steel Continuous Casting Roll by Submerged-Arc Overlaying

Abstract:

This paper examines the microstructure and performance of bead-on-plate welds on 21CrMoV5.11 steel continuous casting roll (dimensions:φ150mm×300mm) by submerged-arc overlaying under three types of welding heat (high, medium and low) input. The result shows that the microstructure of first, second and third tiers of bead-on-plate weld is martensite and ferrite, the ferrite is distributed in worm, streak or flake forms, the first tier of weld metal has slightly more ferrite, the deposited metal has even distribution of hardness, the third tier of weld metal has high hardness, when the input of welding heat is high, the bead-on-plate weld has low hardness, the wearing resistance is poor and ferrite is mostly distributed in batten form.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 1647-1650
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.1647
• Online since: July 2011
• Authors: Cheng Gang Ding, Xiao Xia Meng
• Keywords: 21CrMoV5.11 Steel Continuous Casting Roll, Microstructure, Performance, Submerged-Arc Overlaying Process

References

[1] Boli Chen: Welding Metallurgical Theory. (Tsinghua University Publishing House, Beijing 1991) (in Chinese)

[2] GB 12444.1-90, Metal Wear-resisting Test Method—MM-type Wear-resisting Test (RPC.St.in Chinese)

[3] Qinghui Zhang: Welding Journal, Issue 4(1994), pp.214-218(in Chinese)

[4] Lianfang Wang, Boli Chen, Xilong Jin: Welding, Issue 6(1991) , pp.6-9(in Chinese)

[5] A.S. Argon: Metall. Trans. , Issue 6A(1975), p.826