laser welding robot arm

An overview of laser welding robots in industry：

Laser welding machines are a high-precision, high-efficiency joining technology used in modern industrial manufacturing. They utilize a focused, high-energy laser beam as a heat source to locally melt the materials, which then rapidly solidify to form a weld seam. It is widely used in fields such as automotive, aerospace, electronics, medical devices, hardware and home appliances, and energy, and has become a core process in precision manufacturing.

The working principle of a laser welding machine:

Laser welding machines are primarily based on photothermal effects: the laser beam is focused into a micron-sized spot, achieving energy densities of 10⁶-10⁹ W/cm², instantly heating the material to its melting point or even vaporization, forming a molten pool. The molten pool rapidly solidifies under a protective gas (such as argon), achieving a metallurgical bond. The main modes include:

Conduction welding: Lower power (<2kW), suitable for thin sheets, with a small heat-affected zone.

Deep penetration welding (keyhole effect): Higher power (>2kW), forming a "keyhole," with welding depths reaching 10mm+.

Pulsed/continuous wave: Pulsed lasers are suitable for precision spot welding, while continuous wave lasers are suitable for high-speed line welding.

Main types and power classifications：

High precision: Weld seam width 0.1-0.5mm, repeatability ±0.02mm, defect rate <0.5%.

High efficiency: Welding speed 10-50mm/s, 3-10 times faster than traditional welding, 40% increase in productivity.

Energy-saving and environmentally friendly: Electro-optical conversion efficiency 30%-40%, no smoke or fumes, no welding materials, 60% reduction in carbon emissions.

Wide range of material compatibility: Suitable for stainless steel, aluminum alloys, titanium alloys, copper, and dissimilar metal welding.

High degree of automation: Easily integrated with robots and vision systems, yield rate 99.5%+.

Tianyu Laser is a leading manufacturer of various laser equipment. Please feel free to contact us with any inquiries.