Calculation by Thermal Conduction Theory and Its Discussion for the Penetration Depth in Electron-Beam Weld Bead

Studies on electron-beam Welding (8)

Abstract

With utilization of penetration mechanism in electron-beam welding, an equaption which estimates the penetration depth in bead by calculation is induced from thermal conduction theory in this report.
Moreover, to examine the valiuity of the equation, each penetration depth which is estimated by the equation is compared and discussed with the actual depth in numerous beads under the same welding conditions.
As a result of this discussion, it becomes apparent that the induced equation for calculation of the penetration depth gives successfully the penetration depth in actual bead.
Therefore, if the welding condition and physical constants for the used material are known, the penetration depth in actual bead can be easily estimated by simple calculation using the above equation.