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What Is Laser Welding and How Does It Work

The process of making welds by joining metals together using a laser beam is referred to as laser welding. The process requires a concentrated heat source, thin materials, and high-speed. There are two types of processes in laser welding viz. conduction limited and keyhole.

Laser welding is one of the most popular and advanced kinds of welding as it creates fine quality end products. Hence, it is used in every area of industrial manufacturing like aerospace, automobile, jewelry, and many others. Another reason why laser welding is gaining popularity is the increasing use of additive manufacturing. 3D printing needs high-end welding processes to create complex prototypes.

The technology of lasers was introduced by Albert Einstein, known as laser welding. After that 32 years later, the first experiment was successful that proved Einstein’s theories. Laser welding was first introduced in 1967, which was carried out by oxygen assisted gas and concentrated CO2 laser beam.

Types of Lasers Used in Welding

It involves pulse penetration with 1 to 100 Joules Of energy, 1 to 10 milliseconds time, and 1micrometer wavelengths.

The lasers are a mixture of different gases and are most preferred as they use low-current, high-voltage power. Helium, carbon dioxide, and nitrogen are the most used gases in laser welding.

 This laser is used for complex elements as well as hard metal that are difficult to weld. Along with diode lasers, it is necessary to use inter gases for shielding as the materials are very reactive.

Working of Laser Beam 

Types of Laser Welding 

This type is also known as keyhole welding because the laser is used to create and hole on the surface of the material. The hole is further sealed by another molten weld. The metals used in penetration welding are Platinum, Low alloy and stainless steel, Aluminum, Nickel, Carbon steel, etc.

This process requires relatively low energy and used to make welds as well as weld nuggets. Conduction welding is carried out in two-mode viz. Direct heating and energy transmission.

Application of Laser Welding 


The most reliable source for laser welders is Mikro Innotech India Pvt Ltd who has been offering laser welding solutions since 2008. The company has its footing into Indian as well as international markets. Their laser welds are of the highest quality components with the state of the art, Noone Software package.

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