The Paton Welding Journal, 2003, №05

2003 №05 (11)

2003 №05 (13)

---

The Paton Welding Journal, 2003, #5, 49-51 pages

Thermal-pressure joining of tubes to tube sheets of high-alloy steels by the electro-hydropulse welding method

L.Yu. Demidenko, N.A. Onatskaya, E.S. Yurchenko

Institute of Pulse Research and Engineering, NASU, Mykolaiv, Ukraine

Abstract
The quality of joints between tubes and tube sheets made by the thermal-pressure electro-hydropulse process has been estimated from the results of strength tests and metallographic examinations. It is shown that in compact heat exchangers of high-alloy steels a metal bond is formed on an area of more than 50 % of the entire mating surfaces.
Keywords: thermal-pressure electro-hydropulse welding, tube, tube sheet, electro-hydropulse pressing, strength tests, metallography, metal bond, quality

References

1. Apolchina, N.M. (1986) Metals in modern power generation units. Moscow: Energiya.
2. Promyslov, L.A. (1974) Failures and performance of ship heat exchangers. Leningrad: Sudostroenie.
3. Leskov, G.M., Samusev, N.L., Kotikov, Yu.I. et al. (1990) Influence of the type of the tube-to-tube sheet welded joints on their resistance to fracture in thermal cycling. Aotomatich. Svarka, 4, 21−23.
4. Mazurovsky, B.Ya., Opara, V.S., Demidenko, L.Yu. (1994) Causes of fracture and means for improvement of reliability of nuclear power plant steam generator collectors. Tyazh. Mashinostroenie, 8, 7−9.
5. Mazurovsky, B.Ya. (1980) Electro-hydropulse pressing of tubes to tube sheets in heat-exchanging equipment. Kyiv: Naukova Dumka.
6. Demidenko, L.Yu., Opara, V.S., Onatskaya, N.A. (2000) Peculiarities of interaction of mating surfaces in thermalpressure electro-hvdropulse welding. Tyazh. Mashinostroenie, 7, 37−38.
7. Finkelshtejn, M.L. (1978) Diffusion bonding in liquid media. Moscow: Metallurgiva.
8. Opara, V.S., Demidenko, L.Yu. (1996) Thermal-pressure welding as a radical way of improving reliability of heat-exchanging equipment. Tyazh. Mashinostroenie, 10, 23−26.
9. Demidenko, L.Yu., Yurchenko, E.S. (1992) Capabilities of thermal-pressure electro-hvdropulse welding of tubes to tube sheets. Ibid., 1, 32−33.
10. Kazakov, N.F. (1976) Diffusion bonding of materials. Moscow: Mashinostroenie.

---

Suggested Citation

L.Yu. Demidenko, N.A. Onatskaya, E.S. Yurchenko (2003) Thermal-pressure joining of tubes to tube sheets of high-alloy steels by the electro-hydropulse welding method. The Paton Welding J., 05, 49-51.

---