DIRECT RESISTANCE HEATING APPARATUS AND DIRECT RESISTANCE HEATING METHOD

摘要

A direct resistance heating apparatus includes a first electrode and a second electrode, and a moving mechanism configured to move at least one of the first electrode and the second electrode. A direct resistance heating method includes steps of providing a workpiece having a heating target region, a resistance of which per unit length in one direction thereof varying along the one direction, placing a first electrode and a second electrode on the heating target region, and moving at least one of the first electrode and the second electrode such that a time during which the electric current is applied to each part of the heating target region is adjusted in accordance with a change of the resistance per unit length, thereby heating the workpiece such that the each part of the heating target region is heated to a temperature within a target temperature range.