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What is the difference between laser welding machine and plasma welding machine

Apr 18,2023 | TOPTEK

Laser technology has matured, and laser welding machines have become one of the mainstream welding equipment. Laser welding uses high-energy laser pulses to locally heat the workpiece, and the heat is gradually transferred to the inside of the workpiece to melt the workpiece and form a specific molten pool to achieve the purpose of welding.

Laser welding machine is a new type of welding method. Its main feature is welding precision parts. The welding speed of thin plate materials is fast, and the workpiece is basically not deformed after welding. Gradually penetrate into various industries and gradually replace most of the traditional plasma welding machine market. So what is the difference between a laser welding machine and a plasma welding machine?
Laser welding machines are similar to plasma welding in that:
Both belong to general beam arc welding, which converts electrical energy into heat energy, can weld materials with high melting points, and can weld on both sides.
The difference between laser welding and plasma welding is:
The laser of the laser welding machine is a monochromatic, specific, and well-correlated photon flow, and the power of the laser can reach 106-129w/cm2. Moreover, the plasma welding machine belongs to the shrinking arc, and the plasma arc is generally 106w/cm2. The temperature of laser welding machine is much higher than that of plasma welding machine. Laser welding equipment is complex and diverse, and the cost is relatively high, while the structure of the plasma welding machine is simple, and the cost is relatively low.

Laser welding machines are mainly used in industries with high precision requirements such as automobile bodies, locomotive tracks, medical machinery, and electronic products. In addition, plasma welding machines are mainly used in fields that do not require high precision, such as copper alloys, titanium alloys, carbon steel, stainless steel, and aluminum, which are commonly used in industrialized mass production.

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