| 2005 №02 (01) | 2005 №02 (03) |
The Paton Welding Journal, 2005, #2, 10-13 pages
Evaluation of the influence of wet underwater welding conditions on the probability of pore formation in the weld metal
S.Yu. Maksimov
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
A numerical method was used for evaluation of the influence of hydrostatic pressure, velocity of motion of weld pool solidification front and hydrogen concentration in the molten metal in wet underwater welding on the value of critical radius of gas nuclei. Obtained results enable establishing the regularities of the influence of underwater welding conditions on the susceptibility to pore formation.
Keywords: underwater welding, pores, solidification rate, hydrogen, pressure, gas nuclei
References
1. Maksimov, S.Yu., Gurzhy, A.A. (2004) Modeling the conditions of pore initiation in the weld metal in wet underwater welding. The Paton Welding J., 7, 7–11.2. Shiming, L., Guorong, W., Yonglun, S. et al. (1987) A study of microporosity in underwater wet welding. IIW Doc. CREAU 96–87.