Knowledge of high-energy beam welding
2011-09-12 by seoer
This type of Welding Electrode methods include: electron beam welding and laser welding.
(1) Electron beam welding
Electron beam welding is a high-speed electron beam focused on the surface when the heat welding method. Electron beam welding, electron beam generated by the electron gun and accelerated. Electron beam welding are commonly used: high vacuum electron beam welding, low vacuum electron beam welding and non-vacuum electron beam welding. The first two methods are conducted in a vacuum chamber. Weld preparation time (mainly vacuum time) is longer, the size of the vacuum chamber by the workpiece size limit. Electron beam welding and arc welding compared to the main feature is a large weld penetration, melt a small width, the weld metal of high purity. It can be used in thin materials, precision welding, can be used on very thick (the thick 300mm) component soldering. All other welding methods can be used for fusion welding of metals and alloys can be used electron beam welding. Demand high-quality products is mainly used for welding. Can solve the dissimilar metal, easily oxidized metal and refractory metal welding. But not suitable for large volume products.
(2) laser welding
Laser welding is the use of high-power coherent monochromatic light from the sub-stream focused laser beam as heat source for Mig Welding Wires. This welding method is usually a continuous-power laser welding and pulse-power laser welding. Advantages of laser welding is not in a vacuum, the disadvantage is that penetration electron beam welding as strong. Laser welding can perform precise energy control, which can achieve precision micro-welding device. It can be applied to many metals, particularly difficult to solve some of the weld metal and dissimilar metal welding.