Browsing by Author "Kirienko, Yu. D."

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    Influence of Substructure Strengthening of Law-Carbon Steel on the Arcing Process
    (WRTYS, Kyiv, 2017) Vakulenko, Ihor A.; Plitchenko, Sergey; Nadezhdin, Yurii L.; Kirienko, Yu. D.
    EN: For the arcs of forward and reverse polarities there found extreme dependences value of electric current on cold drawing with a maximum at 60% strain. In order to explain the nature of the dependencies of value of electric current on cold drawing the equation for estimating electric current was used with the replacement of surface tension coefficient for the surface tension coefficient of the ferrite of low-carbon steel. Taking into account the fact that as cold drawing increases from 17 to 80% the size of cells is reduced by 30%, the value surface tension coefficient of the ferrite was increased approximately by 1.5 times. After substituting surface tension coefficient of the ferrite in the ratio it has been found sufficiently good agreement of value of electric current with the experimental values of the welding current for reductions of up to 60%. Increase of cold drawing over 60% has led to an increase in differences up to 14 – 22% between value of electric current and the obtained experimental data.