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Laser Welding

Laser welding is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. The process is frequently used in high volume applications using automation, as in the automotive industry. It is based on keyhole or penetration mode welding.

Laser Welding

Lasers provide contact-free, high-speed metal welding solutions for advanced manufacturing. Laser welding operates in two fundamentally different modes: conduction limited welding and keyhole welding. The mode in which the laser beam will interact with the material it is welding will depend on the power density across the beam hitting the workpiece.

With GW fiber lasers, laser welding has become a highly reliable, easily automated process that provides the highest part quality, typically at the lowest processing costs, and virtually maintenance free.

  • the laser beam can be transmitted through air rather than requiring a vacuum
  • the process is easily automated with robotic machinery
  • x-rays are not generated
  • High-precision accuracy for joining even small parts
  • Low heat input for minimal distortion
  • Non-contact welding – no degradation in welding quality
  • No current passes through the part
  • Weld dissimilar metals (e.g. Cu to Al)
  • Minimal maintenance – high tool availability

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Why are more manufacturers switching to welding with fiber lasers from traditional welding techniques?

Staying competitive today requires cost reductions, efficiency gains and repeatable part quality that cannot be met by traditional techniques that rely on increasingly scarce, highly-skilled craftsmen. Enabled by unprecedented no-maintenance, high-reliability and low-cost GW fiber lasers, laser welding systems have become the preferred welding solution for the manufacturing industry.

Gas Metal Arc Welding (GMAW) vs Fiber Laser Welding

GMAW or MIG is a traditional technique using a consumable electrode that works well for larger, badly fitting parts.

Fiber laser welding does not use consumable electrodes, requires less edge preparation, is easily automated and is up to 5x faster. Fiber lasers also provide more precision, and lower heat input. 

Gas Tungsten Arc Welding (GTAW) vs Fiber Laser Welding

GTAW or TIG uses a non-consumable electrode and provides better process control than GMAW but any filler has to be added separately.

Fiber lasers are up to 10x faster with higher precision, lower heat input, and are more easily automated.

Plasma Arc Welding (PAW) vs Fiber Laser Welding

PAW is faster than GTAW, but much slower than laser welding. Having a large melt pool, PAW is good for badly aligned parts, but creates too much heat for many applications.

Fiber lasers offer higher precision, are faster, and have lower heat input in a non-contact process. Laser Wobble Welding is as effective on misaligned parts and does not require daily maintenance of the process head.

Resistance Spot Welding (RSW) vs Fiber Laser Welding

RSW is typically used for joining two pieces of material that are stacked on top of each other.

Fiber lasers only need single-side access, are much faster, and produce higher-strength welds. Fiber lasers do not require electrodes and eliminate the costs and time for electrode replacement.

Electron Beam Welding (EB) vs Fiber Laser Welding

EB welding provides excellent weld quality and a low heat affected zone. Because the process is in a vacuum chamber, contaminant levels are very low.

Fiber laser welding speed is similar to electron beam, but because lasers do not require part transfer through a vacuum chamber, laser cycle time is dramatically shorter.

Advantages of GW Fiber Laser Welding Technology

Flexible-Ring-Mode

FRM output laser beam , arbitrary combination of highenergy beam and Ring Mode,beam size adjustable,aslo tobe satisfied such as lower spatter welding , flexible cuttingand more application requirements.

Anti Back Reflection

ABR technology can be cutting a long time and massive differenthigh reflective metal materials such as aluminum, brass, copper,silver, gold, mirror steel etc.More than 6000 GW lasers are servicing for end users woldwide,fully verifying the reliability andadvancement of GW ABR technology.

High Brightness Flat top

Based one 976nm pump tech.HBF beam mode provideoptimized beam output ,enchance the cutting speed andcutting quality, specially for thick ness metal sheet,improvethe cutting or welding application efficiency.

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