Principles and general features of laser welding machine

1. Principle of laser welding machine
Laser is short for radiation stimulated emission light amplification. Due to its unique high brightness, high direction, high monochrome, and high coherence, it has been widely used in industrial processing since its birth, become the common processing means of future manufacturing systems. Laser welding is a laser beam with high radiation intensity. After a laser beam is focused by an optical system, the power density of the laser focus is 104 ~ 107 W/cm2The processing workpiece is placed near the laser focus for heating and melting. Whether or not the melting phenomenon can be generated depends on the intensity of the production. Time, power density, and peak power of the Laser Applied to the surface of the material. By controlling the preceding parameters, laser can be used for various welding processes.

2. General features of Laser Welding
Laser welding is a kind of hot processing technology that uses laser beam as heat source. It has many advantages compared with electron beam plasma beam and general mechanical processing:
The laser focus of a laser beam is small, and the power density is high. It can weld some alloy materials with high melting points and high strength.
Laser Welding has no contact processing, tool loss, tool replacement, and other problems. Adjustable laser beam energy, adjustable movement speed, multiple welding processes.
High degree of automation of laser welding, can be controlled by computer, fast welding speed, high efficiency, can easily carry out any complicated shape of welding.
Laser Welding has a small thermal impact zone and small material deformation, so no subsequent processing is required.
The laser can weld the workpiece in the vacuum container and the workpiece in the complicated structure through the glass.
The laser beam is easy to direct and focus to realize the transformation of all directions.
Compared with electron beam processing, laser welding does not require strict vacuum equipment systems for easy operation.
High laser welding production efficiency, stable and reliable processing quality, good economic and social benefits.