Experimental and Structural Analysis on Strength of Thermit Welding

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War-broken parts could be repaired quickly without power and gas in the field by using the thermit welding technology. In this paper, experimental and structural analysis on strength of thermit welding was made. According to orthogonal experiments, the pressure mode was found to influence tensile stress most, then the warm-up temperature and the welding line clearance. By quadratic general revolving combination design, the mathematics equation indicating the relation of welding tensile stress, warm-up temperature, pressing time and welding line clearance was obtained, and the optimized welding parameters to achieve the best tensile strength were decided as well. By further analysis on microstructures and fractures of welded seam, fusion zone and HAZ of thermit steel, conclusion was made that it was of vital significance to adopt welding-after-peening method for improving the strength of the welded seam.

Info:

Periodical:

Key Engineering Materials (Volumes 419-420)

Edited by:

Daizhong Su, Qingbin Zhang and Shifan Zhu

Pages:

393-396

DOI:

10.4028/www.scientific.net/KEM.419-420.393

Citation:

B. He and C. Q. Sun, "Experimental and Structural Analysis on Strength of Thermit Welding", Key Engineering Materials, Vols. 419-420, pp. 393-396, 2010

Online since:

October 2009

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Price:

$38.00

[1] S.P. Chakraborty, S. Banerjee: Journal of Materials Processing Technology. Vol. 207 (2008), p.240.

[2] He Dai-hua: Transactions of the China Welding Institution. Vol. 23 (2002), p.87.

[3] Wang Yu-fei, Yang Zhen-guo: Materials Science and Engineering. Vol. 460-461 (2007), p.130.

[4] P. J. Mutton, E. F. Alvarez: Engineering Failure Analysis. Vol. 11 (2004), p.151.

[5] R. Krishnan, J. P. Copsey, R. G. Algeo, J. N. Shirlaw: Tunnelling and Underground Space Technology. Vol. 14 (1999), p.433.

DOI: 10.1016/s0886-7798(00)00006-7

[6] Chen Wei, Sun Chang-qing: New Technology & New Process. Vol. 5 (2005), p.48.

[7] Ren Song-zan: Microstructure Atlas of Steel (Shanghai Science and Tech Literature Publishing Company, China 2003).

[8] Tang bo-gang: Welding Materials for Mile Steel and Low-alloy High-strength steel (Machine Industry publishing company, China 1987). 1 200μm 200μm 200μm.

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