Development of an Algorithm to Estimate Kerf Shapes
Kin-ichi Matsuyama, Kimiyuki Nishiguchi
In the cutting, required heat input density for melting balances with the heat flux from heat source on the cutting front surface. If the required heat input density and the heat flux values were given, the cutting front shape and kerf shape can be estimated by calculation, because the both values were decided by the numerical simulations described in the Report 1 and 2 of this series.
So, the authors tried to make a new algorithm to estimate the cutting front shape and kerf one by using the previous described information for the required heat input density to melt the cutting front and the heat flux value from the arc to the cutting front surface.
First, heat source model was examined. Then, the heat source could be supposed to be exponentially decreasing type. Secondary, it was fixed that the kerf shape can be calculated by the heat balance at the maximum kerf width point of the solidification line on the cutting front. Finally, it was clarified that not only kerf shapes but also gouging depth in cutting can be estimated by the new simulation algorithm.