12 April 2023
Fiber laser


Before the conventional welding method using an electric arc, two pieces of metal were generally welded together by using a hand torch to heat metal to the molten point and joining the pieces together. In the 1940s, Russell Meredith, a welder at Northrop Aircraft Corporation in Southern California, invented the arc welding technique: Tungsten Inert Gas (TIG) welding.His technique was developed because the procedures at the time were inadequate for welds on aluminum and magnesium alloys. This success gave the American industry the ability to build ships, airplanes, and other products at a faster pace.

In today’s economy, with the welding technology’s breakthroughs, many welding methods are available. TIG and MIG welding both use an electric arc and a shielding gas. The main difference between MIG and TIG is the welding electrodes used to create the arc: MIG uses a solid wire that is machine-fed to the weld area, while TIG uses an electrode and filler rod. Today, 80% of welding needs are met using arc welding and other conventional methods. However, these techniques can produce defective parts because of undercuts, incomplete weld penetrations, dense porosity, or cracks.

Laser welding was first demonstrated in the ‘70s on thermoplastics. It was then adopted and is now used for welding different types of materials. Recent advancements in optical fiber technology have made it possible to create compact fiber laser systems, so laser welding machines have become smaller and smaller.



Using noncontact welding techniques, handheld laser welding machines became the next generation of laser welding equipment. An introduction to different laser welding techniques was discussed in a previous post. A material’s surface is directly exposed to a high-energy laser beam, so there is no need to control pressure during operation. Welds are formed when the laser interacts with the material, with good control of melting, cooling, and solidification of the welded joint.

Handheld laser welding offers many benefits compared to more conventional methods:

There are several advantages of using a handheld laser welding machine, including ease of use, smooth weld appearance, fast welding speed, and no consumables required. Many industries require welding processes on complex and irregular parts, such as cabinets, kitchen appliances, stairs, elevators, shelves, stainless steel doors and windows, guardrails, distribution boxes, and more.

Large workpieces can be welded using the handheld laser welding machine. The welding process minimizes the Heat Affected Zone (HAZ), preventing deformations, blackening, and bead formations on the workpiece. Using this technology, a deep, strong weld is achieved with complete melting, leaving no depression between the raised portion of the molten material and the matrix.



There are a number of reasons to opt for handheld laser welding machines over traditional methods. To begin with, the handheld welding head can be selected easily, eliminating workspace restrictions. In addition, the welding head is equipped with an optical fiber so it can rotate in all directions, making it convenient and easy to use. With all the flexibility from this technology, accurate welds can be achieved with a simpler process.


Outdoor welding can also be performed in a more flexible manner than is possible with traditional welding methods. Handheld laser welding is also ideal for spot welding complex welds and different devices with the ability to weld at any angle and part of the workpiece. Any welding task can be made easy and simple with a handheld laser welding machine.

Laser welding can use a fiber laser capable of generating very high output power. Optical fiber technology has advanced to meet the power-level requirements for this application while downsizing the complete system.

Do you have a project in mind that requires specialty optical fibers? Contact us to find out which optical fiber is used for handheld laser welding.