Influence of Gas Shielding Method in Welding with Consumable Electrode on Heat Distribution in a Welded Product

Abstract:

The author analyses the changes of heat distribution in welded joints of 30HGSA steel depending on different types of gas shielding. It is determined that thermal cycles in the weld metal and in the heat-affected zone differ depending on the type of gas shielding. In the range of 760...790°С the temperatures level and a hotter metal of the weld becomes less hot in comparison with the metal of the heat-affected zone with any type of gas shielding. The rate of temperature saturation in the welded parts is a little higher with double-jet gas shielding, levelling of the temperatures between the weld metal and the heat-affected metal occurs 1...1.4 seconds earlier than with conventional single-jet gas shielding.

• Periodical: Solid State Phenomena (Volume 265)
• Pages: 463-469
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.265.463
• Online since: September 2017
• Authors: Dmitry А. Chinakhov*, E.G. Grigorieva, E.I. Mayorova
• Keywords: Shielding Gas, Simulation, Thermal Fields, Welding

References

[1] V.V. Frolov, The welding processes theory, Higher school, Moscow, (1988).

[2] K.V. Bagryansky, Z.A. Dobrotina, K.K. Khrenov, The welding processes theory, Vischa shkola, Kiev, (1976).

[3] N.N. Rykalin, Thermal processes calculations when welding, Mashgiz, Moscow, (1951).

[4] B.M. Berezovsky, Mathematical models of arc welding, Principles of thermal processes in the welded units, The South Urals State University, Chelyabinsk, (2006).

[5] M.H. Shorshorov, Metallurgy of steel and titanium alloys welding, Science, Moscow, (1965).

[6] L.S. Livshits, A.N. Khakimov, Welding metallurgy and thermal treatment of the weld joints, Engineering, Moscow, (1989).

[7] Y.M. Lakhtin, Metallurgy and thermal treatment of metals, Metallurgy, Moscow, (1983).

[8] Welding and welded materials, Welding characteristics of materials, Metallurgy, Moscow, (1991).

[9] A.G. Potapyevsky, Welding with a consumable electrode under gas shielding, Engineering, Moscow, (1974).

[10] V.A. Lenivkin, N.G. Dyurgerov, Kh.N. Sagirov, Technological properties of the weld arc under gas shielding, Engineering, Moscow, (1989).

[11] V.P. Stolbov, Weld pool., Tolyatti TSU, (2007).

[12] D.A. Chinakhov, Gas Dynamic Control of Properties of Welded Joints from High Strength Alloyed Steels, China Welding, 23(3) (2014) 27-31.

[13] Yu.M. Lakhtin, V.P. Leontyeva, Materials science: course book for higher technical school, Engineering, Moscow, (1990).

[14] D.A. Chinakhov, A.V. Zuev, A.G. Filimonenko, Gas-dynamic Impact of a Shielding Gas Jet on the Drop Transfer When Welding with a Consumable Electrode, Advanced Materials Research, 1040 (2014) 850-853.

DOI: 10.4028/www.scientific.net/amr.1040.850

[15] D.A. Chinakhov, E.D. Chinakhova, Y.M. Gotovschik, S.V. Grichin, Influence of welding with two-jet gas shielding on the shaping of a welding joint, IOP Conf. Series: Materials Science and Engineering, 125 (2016) 012013.

DOI: 10.1088/1757-899x/125/1/012013

[16] D.A. Chinakhov, Study of thermal cycle and cooling rate of steel 30HGSA single-pass weld joints, Applied Mechanics and Materials, 52-54 (2011) 442-447.

DOI: 10.4028/www.scientific.net/amm.52-54.442

[17] M. Kh. Shorshorov, V.V. Belov, Phase transformations and changes in steel properties under welding, Atlas, Nauka, (1977).