The Paton Welding Journal, 2015, №09



2015 №09 (03)

DOI of Article 10.15407/tpwj2015.09.04

2015 №09 (05)

---

The Paton Welding Journal, 2015, #9, 28-31 pages
 

Evaluation of shape and sizes of weld pool in surfacing using combined strip electrode

V.N. Matvienko, V.A. Mazur And L.K. Leshchinsky

Priazovsky State Technical University. 7 Universitetskaya Str., 87500, Mariupol, Ukraine. E-mail: matviyenkovn@mail.ru
 
 
Abstract
Results of the calculation evaluation of shape and sizes of weld pool in submerged arc surfacing using combined strip electrode are presented. The mathematical model was used based on solution of nonlinear differential equation of heat conductivity considering the dependence on temperature of thermophysical properties of base metal. The calculated dependencies describing the process of heat spreading in the base metal during surfacing using combined strip electrode were obtained from the conditions of additive action of three sources - one middle strip and two side strips. With increase in heat input at the edges not only shape and sizes of the pool are changed, but also the non-uniformity of penetration increases. It is shown that due to the change in rotation angle of the side strips relative to the middle strip of combined electrode it is possible to influence the shape formation of weld pool and penetration depth. Adequacy of the developed model is confirmed by a well coincidence of the calculated data with the experiment. 10 Ref., 9 Figures.
 
Keywords: heat spreading, calculation of heating temperature, shape of weld pool, mathematical model, submerged arc surfacing, combined strip electrode, rotation angle of side strips, heat input at the pool edges, non-uniformity of penetration
 
 
Received:                22.06.15
Published:               26.10.15
 
 
References

1. Ryabtsev, I.A. (2005) High-efficiency wide-layer surfacing using electrode wires and strips (Review). The Paton Welding J., 6, 31-35.
2. Makhnenko, V.I., Kravtsov, T.G. (1976) Heat processes in mechanized surfacing of parts of circular cylinders type. Kiev: Naukova Dumka.
3. Nakano, S., Chiba, T., Ichihara, N. et al. (1982) Horizontal electroslag welding process for surfacing. Pat. 4309587 USA. Int. Cl. B23K 9/04. Publ. 1982.
4. Leshchinsky, L.K., Matvienko, V.N., Lavrik, V.P. (1985) Influence of electrode strip shape on quality of steel deposited layer. Avtomatich. Svarka, 9, 60-62.
5. Matvienko, V.N., Leshchinsky, L.K., Egorov, V.A. et al. Method of split strip electrode surfacing. USSR author's cert. 1561348. Int. Cl. B23K 9/04. Publ. 03.01.90.
6. (2011) ASM Handbook. Welding fundamentals and processes, Vol. 6A.
7. Majstrenko, A.L., Nesterenkov, V.M., Dutka, V.A. et al. (2015) Modeling of heat processes for improvement of structure of metals and alloys by friction stir method. The Paton Welding J., 1, 2-10. https://doi.org/10.15407/tpwj2015.01.01
8. Belousov, Yu.V., Leshchinsky, L.K., Sologub, B.B. (1976) Selection of optimal shape of strip electrode for wide-layer surfacing. Avtomatich. Svarka, 12, 24-28.
9. Samotugin, S.S., Nesterov, O.Yu., Mazur, V.A. et al. (2004) Mathematical description of heat propagation in complex shape tool under action of plasma heat source. Vestnik IANU, 101-107.
10. Matvienko, V.N., Leshchinsky, L.K., Mazur, V.A. (2014) Heating and melting of base metal in submerged arc surfacing with composite strip electrode. Svarochn. Proizvodstvo, 4, 3-7.

---