| 摘要 |
PURPOSE:To automatize finishing work by cutting with beveling a ridge line by the thermal energy of plasma and by heating with the melting of the residual edge by the plasma soft arc reducing the energy density continuously. CONSTITUTION:A slant cutting is performed under the plasma conditions for cutting in the first stage. In this case, the center of a spindle 2 is connected to the manipulator, etc. having the function to direct for the point of intersection P0 and profile the ridge line and controlled with the dimension of the nozzle gap being made about constant. In the second stage, the residual edge part A of the slant cutting time is continuously melted under the plasma conditions reducing the energy density for melting by the one pass melting method to melt the contour shape including the torch aiming position P01 at the melting time or the plural passes melting method to melt the contour shape including P02, P03. The prescribed R beveling is worked by utilizing the surface tension of the molten metal and the melt solidification phenomenon of the metal related to the torch feeding speed and plasma conditions.
|
