Amada ML-2550A, Operation Manual

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1. YAG Laser
21
ML-2550A/2551A
Introduction Part
Inst
allat
ion and Preparation Part
Operating Part
Maintenance Part
Appendixes
Chapter 1
●
Overview of the YAG Laser Welder
1. YAG Laser
Laser means the equipment to generate powerful light by amplifying light
(electromagnetic wave) or means this light itself. Laser can be classified into various
types by light generating material. Among these types, the typical type as welding
laser in the industrial field is Nd: YAG laser, which is generally called YAG laser. The
name of Nd: YAG laser originates from the fact that this laser is generated by doping
Neodymium with the Yttrium Aluminum Garnet crystal.
The YAG laser wavelength is 1064 nm of near infrared rays that are invisible to man.
Most of laser equipment for laser welding belongs to class 4 laser that is the most
hazardous in the classification of laser products specified in JIS. When YAG laser
light greets the eye, it is focused by crystalline lens and reaches the retina, thereby
inviting a loss of eyesight. Do not look at the YAG laser light in any case. Because
both beams and scattered light are hazardous, do not touch or look at them.
To check where invisible laser is irradiated on the workpiece, red guide light is
generally mounted in the laser equipment. When the output unit is provided with a
CCD camera, cross lines are generally displayed on the monitor and the cross point
of these cross lines is an irradiation point. In this laser, a red point appears on the
workpiece when guide light is output.
Chapter 1 Overview of the
YAG Laser W
elder
Introduction Part