Laser welding is one of an important aspect of laser material processing technology, and is often referred to as laser welding, laser welding machine, according to their way of working can be divided into laser mold welder burning (often
Manual welding machine)
, automatic laser welding machine, laser spot welding machine, optical fiber transmission laser welding machine, welding of light is the use of high-energy laser pulses to local heating in small area of material, the energy of laser radiation by heat conduction to the internal diffusion of material, the material after melting form specific molten pool in order to achieve the purpose of the welding.
One, the main feature of the laser welding machine is mainly used for welding thin wall material and low speed in the 1970 s, the welding process is thermal conduction, i. e. the laser radiation heating surface, the surface heat to the internal diffusion through heat conduction, by controlling the width of laser pulse, energy, peak power and repeating frequency, parameters such as melting of components, to form specific molten pool.
Because of its unique advantages, has been successfully applied in precision welding of micro and small parts.
The emergence of high power CO2 and YAG laser power, has opened up a new field of laser welding.
Obtained based on the theory of small hole effect of deep fusion welding, in industrial sectors such as machinery, automobile, steel obtained day by day the widespread application.
Laser welding compared with other welding technology, laser welding of the main advantages are: 1, the high speed, big depth and small deformation.
2, can be at room temperature or under special conditions for welding, welding equipment.
For example, laser through the electromagnetic field, beam deflection;
Laser in a vacuum, air and gas environment can weld, and the beam by glass or transparent materials for welding.
3, can be welding refractory materials such as titanium, quartz, etc. , and can be applied to the opposite sex material welding, the effect is good.
4, after focusing the laser, high power density, in high power device, when welding the 5-1, deep wide ratio can reach the most * up to now.
5, the micro welding can be performed.
After focusing the laser beam can be obtained very small spot, and can accurate location, can be applied to large quantities of automation in the compound of micro and small size workpieces.
6, can be welding inaccessible parts, the non-contact remote welding, has a great deal of flexibility.
Especially in recent years, the optical fiber transmission technology is adopted in YAG laser processing technology, laser welding technology to obtain a more widespread promotion and application.
7, easy to realize laser light beam according to time and space, can perform multiple beam machining and transfer at the same time, provides a more precise welding conditions.
Laser welding welding processing