Calculation of the penetration zone geometric parameters at surfacing with a strip electrode

Modeling the Influence of Mechanical Control Impacts on the Distribution of the Temperature Field in the Base Metal during Surfacing with a Strip Electrode

“…The calculated data obtained by programming the above dependences ( 1) and ( 2) were used to construct isotherms of the temperature distribution with and without mechanical action on the electrode. The calculation was carried out according to the method of work [15] using the equivalent values of the power of the heat source depending on the parameters of the control actions. The calculation results (electric arc surfacing of low-carbon steel with a austenitic strip electrode with a cross section of 60×0.5 mm) are shown in Fig.…”

“…This is due to the fact that the function of change in the thermal power in the base metal is characterized by a large number of controllable parameters, which does not allow the use of known techniques for sources of variable power for calculating the distribution of heat in the weld and near-weld zone [13,14]. For the case of using a strip electrode, the situation is aggravated by the introduction of an additional parameter for the distribution of the heat source over the width of the strip [15]. To date, there are only a few publications devoted to the influence of controlled mechanical transfer during surfacing with a strip electrode on the change in the temperature distribution and, accordingly, the properties of the weld metal and HAZ [16,17].…”

Research of the Microstructure of the Deposited Layer during Electric Arc Surfacing with Control Impacts

“…The works devoted to the modeling and control of the formation of the penetration zone using wire [13] and strip electrodes [14,15] have shown that it is possible to reduce the bath temperature and, accordingly, the mobility of the liquid metal by imposing forced mechanical actions on the electrode. This provides controlled melting of the electrode and controlled by dropping drops of liquid metal into the weld pool.…”

“…The use of mechanical actions on the electrode leads to a change in the instantaneous power of the heating source in accordance with a change in the oscillation frequency of the electrode end and affects the efficiency of electrode melting. In [13][14][15] it was established that an increase in the melting coefficient of the electrode metal during electric arc surfacing with the use of mechanical control actions on the electrode is explained by a decrease in the overheating temperature of electrode metal droplets and a decrease in the size and mass of droplets transferred from the end of the electrode to the weld pool.…”

Investigation of the Heat-Affected Zone Properties During Cladding of Power Equipment with Austenitic Materials Using Control Mechanical Impacts on the Strip Electrode

“…In this case, it is preferable to use strip electrodes, the use of which provides a significantly lower penetration depth of the base metal [18] and higher productivity in comparison with wire electrodes. However, the high heat input required for stable melting of the tape can contribute to the formation of unfavorable structural elements in the heat-affected zone, leading to a decrease in performance.…”