The Paton Welding Journal, 2011, №12



2011 №12 (03)

2011 №12 (05)

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The Paton Welding Journal, 2011, #12, 16-19 pages  

CONTROL OF PROPERTIES OF THE WELD METAL BY REGULATING THE LEVEL OF OXIDATION OF THE WELD POOL IN GAS-SHIELDED WELDING

S.T. RIMSKY

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Activity of oxygen dissolved in the weld pool metal was determined directly in the process of welding of low-alloy steel in the oxidising shielding gas atmosphere by using the electrochemical method. Prediction of mechanical properties of the weld metal depending on the activity of oxygen in molten metal and welding heat input was substantiated.
 
 
Keywords: arc welding, consumable electrode, oxidising shielding gases, weld pool, electrochemical method, oxygen activity, heat input, weld metal, structure and mechanical properties
 
 
Received:                ??.??.??
Published:               28.12.11
 
 
References
1. Cochrane, R.C., Kirkwood, P.R. (1979) The effect of oxygen on weld metal microstructure. In: Proc. of Int. Conf. on Trends in Steels and Consumables for Welding (London, 14-16 Nov. 1978). Cambridge: TWI, 103-122.
2. Kulikov, I.S. (1975) Deoxidation of metals. Moscow: Metallurgiya.
3. Yavojsky, V.I., Vishkarev, A.F., Luzgin, V.P. et al. (1975) Express analysis of oxygen content of steel. Moscow: Metallurgiya.
4. Luzgin, V.P., Yavojsky, V.I. (1983) Gases in steel and quality of metal. Moscow: Metallurgiya.
5. Rimsky, S.T., Svetsinsky, V.G., Bondarenko, T.P. et al. Method of determination of activity of elements in melt. USSR author's cert. 1491161. Int. Cl. G 01 N 27/46. Prior. 22.12.1986. Publ. 1988.
6. Svetsinsky, V.G., Bondarenko, T.P., Rimsky, S.T. et al. (1988) Determination of activity of oxygen in molten metal in gas-shielded welding of steel. Avtomatich. Svarka, 2, 73.
7. Rimsky, S.T., Svetsinsky, V.G. (1977) Effect of composition of oxidizing argon mixture on solidification crack resistance of weld on steel VSt3sp. Ibid., 10, 48-52, 54.
8. Pidgaetsky, V.V. (1970) Pores, inclusions and cracks in welds. Kyiv: Tekhnika.
9. Svetsinsky, V.G., Rimsky, S.T., Petrov, Yu.N. (1974) Peculiarities of fine structure of gas-shielded welds. Avtomatich. Svarka, 8, 5-8.

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