Laser Welding


Ever since lasers found their way into industry, LMI AB and Preco have been developing laser welding systems for companies in a range of businesses.

Laser welding is Characterized by exceptionally smooth and fine welded seams. Lasers are excellent for welding thin materials, performing hermetically sealed welds, or welding close to heat-sensitive components - laser welding heats a much smaller area than with Conventional welding methods. Even hard to reach areas can be laser welded as long as there is a line of sight between the nozzle and material.

Laser welding can be done on any surface That Conventional welding works on and then some. By using laser welding, materials That are Usually Not Compatible can still be welded. For example, Stainless Steel with High Carbon Concentrations can be welded with titanium.

We have a Wide range of high-power lasers from 500W - 12kW and specialised equipment with pulsed Nd: YAG lasers for welding thin materials and production of hermetically sealed joints.


Automobiles, motorcycles, bicycles, ATVs, medical manufacturing, razor blades etc. Applications demanding very fine and high precision welds.


Steel, Stainless Steel, Aluminum, Titanium, Platinum, Plastic.

Hybrid Laser Welding

Hybrid laser welding is a combination of the more Conventional MIG / MAG technique and laser processing.
The intense energy delivered by the laser in combination with an Effective melting of the MIG / MAG welding wire results in high-speed welding That can bridge large gaps between surfaces. 

The process Provides significant advantages Compared to MIG / MAG Merely by the fact That it is given a much lower distortion and can be reunited with Gina sweep Components That Reduce cycle time and avoid rework.  Common hybrid welded materials include aluminum alloys and carbon steel.

Remote Welding - Galvo based welding

Remote welding or galvo based welding differs from traditional laser welding by the fact that the workpiece does not have to move, instead the beam is guided by the two moving galvo mirrors inside the scanner. Small movements of the mirrors leads to large movements of the focused beam, resulting in beam velocities of 500 ips (13 m / s). Remote welding is typically used for thin or sheet materials that require a series of stitches or points to be strong enough. 

The galvos rapid and precise positioning of the beam between the welds significantly reduces the total cycle time. Process area (or field of view) varies but can be as large as 1 x 1m. With applications ranging from spot welding of electronic devices to joint welding of sheet steel for cars.

Advantages of laser welding

  • Minimal heat input, provides a small heat-affected zone (HAZ)
  • Fine-grained treatment with exceptional welding quality
  • High energy density and high welding speed
  • No filler material required for most applications
  • Welding in hard-to-reach areas

Our partners provide experienced application engineers to help to create a process for welding Normally Incompatible materials.

LMI AB is capable of performing metallurgical evaluations and our staff is experienced in destructive and non-destructive techniques (eg. ultrasound, x-ray, helium leak detection) for Assessing weld quality.

We're experienced in hybrid and induction assisted laser welding as well as cold wire fed welding. Sometimes, this is a necessity if the weld chemistry requires changes to meet the design requirements.

Below you can see various ready-made laser welding system from Preco. Contact us to find out if laser welding matches your needs for materials processing.

Standard laser systems 

LMI CLW 1000

LMI_CWM_1000.pngThe birth of the LMI CLW 1000 machine concept resulted from our customers' need for a compact and user-friendly heavy-duty ABS ring welder with short cycle times.

Its minimalistic control panel and custom-made GUI makes this welder an extremely operator-friendly turnkey welding package.

When equipped with an IPG fiber laser up to 2 kW, the air-cooled laser source can be installed inside the Class 1 protective cabinet. The result is a very compact independent turnkey system that can be fitted with any fixture or tooling to fit the need of many customers.

LMI CLW 1000



Mini-FlexProThe laser system Mini-FlexPro® is an innovative and cost-effective solution for laser processing of flexible circuits, membrane switches, digitally printed products and medical products.



Contact Tim Smith

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