The Paton Welding Journal, 2011, №02



2011 №02 (05)

2011 №02 (07)

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The Paton Welding Journal, 2011, #2, 27-30 pages  

EFFECT OF LOW-FREQUENCY RESONANCE OSCILLATIONS ON STRUCTURE AND CRACK RESISTANCE OF DEPOSITED HIGH-CHROMIUM CAST IRON

Yu.N. TYURIN, Yu.M. KUSKOV, L.I. MARKASHOVA, Ya.P. CHERNYAK, E.N. BERDNIKOVA, V.I. POPKO, O.S. KASHNARYOVA and T.A. ALEKSEENKO

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
Abstract
An experiment was carried out on cladding with high-chromium cast iron. The probability of impact on formation of structure of the deposited metal by low-frequency oscillations, the frequency of which coincided with that of natural oscillations of a workpiece (under resonance conditions), was established, the deposited metal having higher hardness and being characterised by a uniform distribution of chromium between dendrites and eutectic, and by smaller sizes of dendrites near the fusion line. A higher crack resistance of the deposited metal was noted.
Keywords: arc cladding, low-frequency oscillations, resonance condition, structure of deposited metal, cold crackss
 
 
Received:                ??.??.??
Published:               28.02.11
 
 
References
1. Makarov, E.L. (1981) Cold cracks in welding of alloyed steels. Moscow: Mashinostroenie.
2. Pogodin-Alekseev, G.I., Gavrilov, V.I. (1966) Influence of elastic oscillations on solidification of metals and alloys. Izvestiya
AN SSSR. Metally, 1, 80-101.
3. Boldyrev, A.M. (1976) On the mechanism of formation of structure of the weld metal with introduction of low-frequency oscillations into the weld pool. Svarochn. Proizvodstvo, 2, 53-54.
4. Ryzhov, R.N. (2007) Influence of pulse electromagnetic actions on formation and solidification of welds. The Paton Welding J., 2, 49-50.
5. Russo, V.L. (1958) Study of the effect of elastic oscillations of different frequencies on solidification of the weld pool. In: Welding. Leningrad: Sudpromgiz.
6. Korytov, V.A., Gosteva, I.I., Butakov, B.I. (1995) Vibropulse treatment of steel in a pouring ladle - the effective method for increasing crack resistance of cast metal. Stal, 5, 38-42.
7. Matyukhin, Yu.E. Method for relieving residual stresses in welded joints on vessels and apparatuses, as well as on their elements. Pat. appl. 2003136226/02 RF. Int. Cl. C 21 D 1/30. Publ. 20.05.2005.
8. Buryshev, B.I. Method for welding of metal parts. Pat. appl. 2002125911/02 RF. Int. Cl. B 23 K 9/16. Publ. 27.02.2005.
9. Buryshev, B.I. Method for welding of metal parts. Pat. appl. 2002125910/02 RF. Int. Cl. B 23 K 9/16. Publ. 27.02.2005.
10. Aristov, S.V., Russo, V.L. (1982) Solidification of weld metal at low-frequency oscillations of the melt. Svarochn. Proizvodstvo, 11, 42-44.

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