Infrared Camera Analysis of Laser Hardening

Table 1

Emissivities of engraved areas in the range of infrared camera 7.5–13 μm.

f (kHz)/v (mm/s)	2	5	7	15	30	80
500	0.80	0.71	0.70	0.79	0.90	0.16
300	0.75	0.71	0.75	0.73	0.86	0.21
100	0.69	0.80	0.84	0.83	0.75	0.40
50	0.77	0.82	0.85	0.88	0.80	0.60
20	0.85	0.89	0.92	0.95	0.90	0.79