| 摘要 |
This method resides in the use of laser beam(1) focused to a small spot to bring the ferrous workpiece to ignition temperature in combination with a high intensity oxygen jet(30) to cause the initiation of the thermochemical reaction. The laser beam may impinge the workpiece at a point about 1cm behind the spot where the oxygen impinges the workpiece surface to a point about 10cm ahead of the spot. Accordingly, the laser beam may penetrate the high intensity oxygen jet and still cause the thermochemical reaction to start instantaneously.
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