| 2008 №02 (02) | 2008 №02 (04) |
The Paton Welding Journal, 2008, #2, 14-18 pages
Mechanical properties of weld metal and cold cracking resistance of tee-joints on 13KHGMRB steel
V.D. Poznyakov
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Effect of deposited metal composition on mechanical properties of single-pass fillet welds in T-joints on high-strength alloyed steel 13KhGMRB and resistance of these joints to delayed fracture depending upon hydrogen concentration, welding heat input and shielding atmosphere composition have been evaluated. It is shown that the highest resistance of such joints to cold cracking is observed in CO2 welding using 1.6–2.0 mm low-alloy wire Sv-08G2S, with preheating to 60 °C and limited diffusible hydrogen content (up to 3.5 ml/100 g) of the welds.
Keywords: arc welding, shielding gases, high-strength steel, tee joints, mechanical properties, cold cracks, cooling rate, preheating, diffusible hydrogen
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