Influence of Pulse Arc Surfacing Modes on Geometric Dimensions of Welded Beads and Structure of Deposited Metal of Fe–C–Cr–Ti–Mn–Si Alloying System

I. O. Ryabtsev$^{1}$, A. A. Babinets$^{1}$, I. P. Lentyuhov$^{1}$, I. L. Bohaychuk$^{1}$, A. V. Yevdokimov$^{2}$

$^{1}$E. O. Paton Electric Welding Institute, NAS of Ukraine, 11 Kazymyr Malevych Str., UA-03150 Kyiv, Ukraine
$^{2}$Dniprovsky State Technical University, 2 Dniprobudivska Str., UA-51918 Kamianske, Ukraine

Received: 28.01.2021; final version - 17.09.2021. Download: PDF

In this work, comparative experimental studies of the influence of the parameters of pulsed arc surfacing on the geometric dimensions of the deposited beads and the structure of the deposited metal of the Fe–C–Cr–Ti–Mn–Si alloying system are carried out. As a standard, we used samples deposited in the same modes, but without the use of pulse technologies. The studies are carried out using a Fronius TPS 400i semiautomatic device with its own power supply and U-653 universal surfacing equipment with a VDU-506 power source. It has been experimentally established that the use of pulsed surfacing modes leads to a change in the microstructural state of the deposited metal and to an increase in its hardness by an average of 4–5 units on the HRC scale, in comparison with surfacing without pulses. The value of the dynamic/impulse parameter in the pulsed surfacing mode, which is responsible for the droplet detachment energy, is determined. A more uniform structure of the deposited metal is obtained when surfacing in the optimal modes, which is characterized by a fine grain size and the smallest width of the heat-affected zone. It has been established that pulsed surfacing with the use of a Fronius TPS 400i semiautomatic device makes it possible to significantly change the amplitude, period and tilt angle of the current wave front as compared to surfacing without pulses on standard equipment. This has a significant effect on the properties of the weld metal. The data obtained in this work can be used when choosing the modes of surfacing of parts operating under conditions of intense abrasive wear.

Key words: arc surfacing, impulse surfacing, surfacing modes, penetration depth, weld metal, structure of surfacing metal, heat-affected zone.



PACS: 06.60.Vz, 52.77.Fv,, 68.37.-d, 81.05.Bx, 81.40.-z

Citation: I. O. Ryabtsev, A. A. Babinets, I. P. Lentyuhov, I. L. Bohaychuk, and A. V. Yevdokimov, Influence of Pulse Arc Surfacing Modes on Geometric Dimensions of Welded Beads and Structure of Deposited Metal of Fe–C–Cr–Ti–Mn–Si Alloying System, Metallofiz. Noveishie Tekhnol., 43, No. 12: 1667—1681 (2021) (in Ukrainian)

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