The Paton Welding Journal, 2001, №07

2001 №07 (04)

2001 №07 (06)

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The Paton Welding Journal, 2001, #7, 20-23 pages

Effect of hydrogen in low-alloyed weld metal on pore formation in submerged arc welding

I.A. Goncharov, A.P. Paltsevich, V.S. Tokarev

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The content of diffusive and residual hydrogen in the deposited and weld metal was determined using the method of a gas chromatography in welding with fused manganese-silicate fluxes of AN-348A, AN-60 and AN-60SM grades. It was established that the critical content of hydrogen in weld during SAW at which the pores are formed, does not depend on the flux grade and amounts to 12-14 cm³ H₂/100 g of weld metal that is equal to the hydrogen solubility in δ-iron at melting temperature and 10⁵ Pa pressure.
Keywords: fused flux, deposited metal, weld metal, pores, diffusive hydrogen, residual hydrogen

References

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Suggested Citation

I.A. Goncharov, A.P. Paltsevich, V.S. Tokarev (2001) Effect of hydrogen in low-alloyed weld metal on pore formation in submerged arc welding. The Paton Welding J., 07, 20-23.

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