| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser processing method which can efficiently remove slag generated on a work surface in the vicinity of a piercing hole when radiating a laser beam to a stainless steel workpiece to form the piercing hole therein, and to provide a laser processing apparatus.SOLUTION: A laser processing apparatus 1 includes: a laser nozzle 10; an assist gas feeding unit 30; a servo control unit 40; and a control unit 50. The control unit 50 is configured to execute: a first step of forming a piercing hole H in a workpiece W; a second step of enlarging the piercing hole H; a third step of enlarging the hole H formed in the second step; and a fourth step of moving the laser nozzle 10 on an outer peripheral side from the hole H formed in the third step and injecting a removing gas from the laser nozzle 10 to remove slag, in this order. |
