Electrodes for welding high-alloy steels TSL-25/1

THE MAIN PURPOSE OF. The electrodes are designed to perform single-layer surfacing corrosion-resistant coating and the first layer of two-layer surfacing corrosion-resistant coating on the surface of elements of power equipment from steels of perlite class for performing root passes of welds of parts from high-alloy CR-Ni steels operating at temperatures above 600°C. the weld at the bottom, top, and overhead positions with direct current of reverse polarity. NTD GOST 9466-75, OST 108.948.01-86 TECHNOLOGICAL FEATURES. The rod is made of wire marks SV-07CR25NI13 according to GOST 2246-70, TU 3-1050-77. The diameter of the produced electrodes 3,0; 4,0 and 5,0 mm. CHARACTERISTICS OF MELTING OF THE ELECTRODES. Performance (for diameter 4.0 mm) 9.5 g/(A x h):1.4 kg/h. electrode Consumption per 1 kg of weld metal-1.7 kg. THE SPECIAL PROPERTIES. The weld metal in initial state (without heat treatment) is resistant to intergranular corrosion when tested according to the method of AM or AMU (GOST 6032-89). The content of ferrite phase in the deposited metal of 5-8%. TECHNOLOGICAL FEATURES OF WELDING.Welding (surfacing) to produce rolls of a width not exceeding three times the diameter of the electrode. In the process of welding (hardfacing) craters, you must fill re-ignitions of the arc. THE SYMBOL ELECTRODANCE-25/1-Ø-VD GOST 9466-75, OST 108.948.01-86 E-0064-G20 ISO – E 23.12 B20 AWS (USA) – E 309-15