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Laser welding

Laser welding is an advanced welding technique that uses a laser beam to melt and join materials. The technology is known for its high precision, speed and ability to weld thin and hard-to-reach areas.

laser welding

Technology and process

The laser beam:

A high power laser generates a concentrated beam of coherent light that is focused on the area to be welded. The laser's energy melts the material at the weld area, creating a weld as it cools and solidifies.

Beam type:

The most common laser types for welding include fiber lasers, CO2 lasers and Nd. The choice of laser depends on the material and the welding application.

Welding methods:

Keyhole welding:

An intense laser beam creates a "keyhole" in the material surrounded by molten metal. This enables deeper penetration and stronger welds.

Conductive welding:

Used for thin materials where the laser beam heats up the surface and melts the material through heat conduction.

Shielding gas:

Such as argon or helium, often used to protect the welding area from oxidation and contamination.

Automation:

Laser welding is often automated using robots and CNC machines, providing high repeatability and accuracy.

Advantages of laser welding

Precision:

Laser welding offers high precision and control, which is important for applications that require accurate and complex welds.

Speed:

The welding process is fast and efficient, reducing cycle time and increasing productivity.

Minimal heat impact:

The concentrated laser beam minimizes heat-affected zones, reducing the risk of distortion and heat-related damage to the material.

Flexibility:

Can weld various materials, including steel, aluminum, titanium and plastic. Laser welding can also be used to join different materials.

Automation:

Suitable for automated production lines and robotic systems, increasing the consistency and quality of welds.

Accessibility:

Enables welding of hard-to-reach areas and complicated geometries.

Areas of use

Automotive industry:

Welding of car bodies, gearboxes and other components where precision and strength are critical.

Electronics:

Welding of small and sensitive components in electronic devices.

Medicine:

Manufacturing of medical equipment and implants where sterility and precision are important.

Aerospace:

Welding of light and strong structures in aircraft and spacecraft.

Jewelry:

Fine welding of jewelry pieces to create complex and detailed designs.

Important factors to consider

Material selection:

Different materials react differently to laser welding. It is important to choose the right laser and settings for the specific material.

Surface treatment:

The surface of the material must be clean and free of impurities to achieve high-quality welds.

Cost:

The initial cost of laser welding equipment can be high, but the long-term benefits in terms of speed, precision and reduced need for post-processing can justify the investment.

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