1. Different technical principles
1. Laser welding: Laser radiation heats the surface to be processed, and the surface heat diffuses to the interior through thermal conduction. By controlling the width, energy, and peak power of the laser pulse and repetition frequency and other laser parameters to melt the workpiece and form a specific molten pool. ?
2. Argon arc welding: Based on the principle of ordinary arc welding, argon gas is used to protect metal welding materials, and high current is used to melt the welding materials into a liquid state on the base material to be welded. Molten pool is a welding technology that achieves a metallurgical bond between the metal to be welded and the welding material. Since argon gas is continuously supplied during high-temperature molten welding, the welding material cannot come into contact with oxygen in the air, thus preventing the oxidation of the welding material.
2. Different application fields
1. Laser welding: Laser welding technology is widely used in foreign car manufacturing; laser welding is used in the electronics industry, especially the microelectronics industry has been widely used.
2. Argon arc welding: Argon arc welding is suitable for welding non-ferrous metals and alloy steels that are easily oxidized (mainly used for welding Al, Mg, Ti and their alloys and stainless steel); suitable for single-sided welding of double-sided steel. Surface forming, such as bottom welding and pipe welding; tungsten arc welding is also suitable for thin plate welding.
3. Different process characteristics
1. Laser welding: No need to use electrodes, and there is no concern about electrode contamination or damage. The laser beam is easy to focus, align and guide by optical instruments. It can be placed at an appropriate distance from the workpiece and can be redirected between machines or obstacles around the workpiece. Other welding methods cannot be used due to the above-mentioned space restrictions. .
2. Argon arc welding: The arc combustion of argon arc welding is stable, the heat is concentrated, the arc column temperature is high, the welding production efficiency is high, the heat affected zone is narrow, and the welded parts are prone to stress, deformation, and cracks Small; argon arc welding is open arc welding, which is easy to operate and observe.
Baidu Encyclopedia-Laser Welding
Baidu Encyclopedia-Argon Arc Welding