The laser radiation is light amplification by stimulated emission of short, due to its unique high-brightness, high directivity, high color, high coherence, since its birth, its applications in industrial processing in a wide range, and become manufacturing system common processing means. Laser Welding Electrodes process is the use of high radiation intensity laser beam, the laser beam through the optical system is focused, the focus of the laser power density of 104 ~ 107W/cm2, workpiece placed in the vicinity of the laser heating and melting point, melting phenomenon can produce and the resulting strength of the laser depends on the role of surface time, power density and peak power. Control the above parameters can be used for a variety of laser welding.
2, the general characteristics of the laser welding
Laser welding is the use of a laser beam as heat source thermal processing technology, such as with electron beam and ion beam compared to the general machining has many advantages:
(1) laser focus the laser beam spot is small, high power density, can weld some of the high melting point, high-strength alloys.
(2) is a non-contact laser welding process, no tools and tool exchange loss and other issues. Adjustable laser beam energy, speed adjustable, can be a variety of welding.
(3) high degree of automation of laser welding can be controlled by computer, welding speed, high efficiency, easy to carry out any complex shape of the weld.
(4) Laser welding heat affected zone, material deformation, without subsequent treatment processes.
(5) through the Copper Welding Electrode the workpiece in a vacuum container and place in a complex internal structure of the workpiece.
(6) easy to guide the laser beam, focused to achieve the direction of the transformation.
(7) laser welding and electron beam processing compared to not require strict vacuum equipment systems, easy to operate.
(8) Laser welding high production efficiency, processing quality and reliable, economic and social good.