The Paton Welding Journal, 2013, №07



2013 №07 (08)

2013 №07 (10)

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The Paton Welding Journal, 2013, #7, 58-60pages

PECULIARITIES OF EXPLOSION WELDING OF STEEL WITH CAST IRON

I.V. DENISOV and L.B. PERVUKHIN

Institute of Structural Macrokinetics and Materials Science, RAS. 8 Acad. Osipyan Str., 142432, Chernogolovka, RF. E-mail: isman@ism.ac.ru


Abstract
Products of cast iron find a wide spreading in modern machine building, in particular for manufacture of friction discs, in which the plates of cast iron are fastened by bolts to steel or copper plates. According to hypothesis about formation of impact-compressed gas (ICG) and its thermal ionization at the interface with the formation of thin layers of low-temperature («cold») plasma in a welding gap during explosion welding, the conditions of formation of carbon steel-low-alloy cast iron joint were determined. Conditions of explosion welding and heat treatment were set for producing full-strength joint and prevention of defects in the form of cracks and spallings along the entire line of contact between the steel and cast iron. The carried out evaluation calculations of parameters of ICG with account for super-speed flowing of surface being welded by it showed that change in rate of contact spot from 2400 up to 4000 m/s leads to increase in temperature and decrease of length of ICG region, as well as time of plasma effect. 6 Ref., 1 Table, 1 Figure.


Keywords: explosion welding, welding gap, impact-compressed gas, gas parameters, cleaning, contact spot


Received:                19.02.13
Published:                28.07.13


References
1. Alekseev, Yu.A. (1997) Structural peculiarities of weld and their influence on metal joining quality in explosion welding with narrow gaps: Syn. of Thesis for Cand. of Techn. Sci. Degree. Chernogolovka.
2. Lysak, V.I., Kuzmin, S.V. (2005) Explosion welding. Moscow: Mashinostroenie.
3. Petushkov, V.G. (2005) Application of explosion in welding technique. Kiev: Naukova Dumka.
4. Bondarenko, S.Yu., Rikhter, D.V., Pervukhina, O.L. et al. (2009) Determination of the parameters of shock-compressed gas in the welding gap ahead of the contact point in explosion cladding. The Paton Welding J., 11, 39-41.
5. Pervukhin, L.B., Pervukhina, O.L., Bondarenko, S.Yu. (2010) Cleaning and activation of welded surfaces during explosion welding. Ibid., 7, 41-43.
6. Konon, Yu.A., Pervukhin, L.B., Chudnovsky, A.D. (1987) Explosion welding. Moscow: Mashinostroenie.

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