(Solved):     It is desired to build a crude oil storage tank as shown in the figure. The tank ...

 

 

It is desired to build a crude oil storage tank as shown in the figure. The tank is formed by rolled, rolled and welded steel plates. a. If it is known from experience that the heat input area where the base and filler material melt in electric arc welding processes is \( 19.63 \mathrm{~mm} 2 \), calculate the power required. It is known that the heat transfer factor is \( 0.7 \), the melting factor is \( 0.5 \), and the melting temperature of 4135 steel is \( 1760^{\circ} \mathrm{K} \). Additionally, it is known that the cross-sectional area of the joint to be welded of each plate is \( 250 \mathrm{~mm} 2 \). Also determine the travered at which the welding operation can be performed. TABLE 29.1 Comparison of several fusion welding processes on the basis of their power densities. \begin{tabular}{lcc} & \multicolumn{2}{c}{ Approximate Power Density } \\ \cline { 2 - 3 } Welding Process & W/mm & Btu/sec-in \\ \hline Oxyfuel welding & 10 & 6 \\ Arc welding & 50 & 30 \\ Resistanc welding & 1000 & 600 \\ Laser beam welding & 9000 & 5000 \\ Electron beam welding & 10,000 & 6000 \\ \hline \end{tabular}