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Why laser welding? | TRUMPF

Reach your objective more quickly: Laser welding is your shortcut

Why waste valuable time and effort and stretch your nerves? Rely on joining with the laser tool and reduce your component costs sustainably. Smooth, visually high-quality visible seams up to meter-long, deep-welded, and extremely stable connections. You can produce all of this effortlessly using laser welding. The result is narrow seam geometries with minimal distortion.

High part quality

Produce high-tensile or tight seams with top visual quality.

High productivity

High process speeds when it comes to laser welding reduce your component costs to a minimum.

High flexibility

Benefit from more design freedom due to a large variety of new seam geometries.

High repeatability

Achieve reproducible results due to automation. This is because robots do not forget.

Our customers are convinced: Laser welding is the future

Welding is fascinating In a number of ways. Bring new shapes to light. One aspect is essential here: The seam must hold. That is the basis for everything to come. Of course, there are a range of additional aspects that you can optimize to enable flexible sheet metal processing. Efficient use of time and labor resources is part of this. And, of course, part quality – both visual and technical. Inevitably, when it comes to classic arc welding, you keep on having to do something particularly unpopular – reworking. The good news is that laser welding results in parts that do not require reworking the majority of the time.

Web special on laser welding, TRYSTAR quote

"For years, our focus was on avoiding welding connections. Now the tide has turned. A simpler design is made up of multiple single parts, but the welding connections are so perfect that we do not have to regrind."

Jim Koberg
Head of production at TRYSTAR
Web special on laser welding, CBV quote

We were worried that laser welding would only pay off from a high quantity. We now even weld individual pieces. I can even use an intern for this task while my specialist is preparing the next fixture.

Werner Neumann
CEO at CBV Blechbearbeitung GmbH
Web special on laser welding, Autz quote

"With laser tacking, deep penetration welding, and heat conduction welding, we have a processing spectrum that allows us to weld a very large variety of components. We will capitalize on this flexibility."

Florian Friedrich
CEO at Autz + Herrmann GmbH
Web special on laser welding, Schink quote

"To produce a flour duster, we require around 110 minutes when using a manual welding process. With the TRUMPF welding cell, we only need around 10 minutes."

Stephan Schink
CEO at Schink Blechbearbeitung und Metallbau GmbH & Co. KG
Web special on laser welding, Sinop quote

The demand for laser welding work increased so quickly that just one year later, we purchased a second laser welding cell.

Vaclav Kriz
Production director at Sinop SMP s.r.o.

The myths of laser welding – we dispel prejudices

In classic sheet metal processing, the MIG/MAG/TIG processes often dominate. Could this be why you are also hesitant to get started with laser welding? Let's look at the common concerns more closely:

"These thin weld seams do not have enough tensile strength"

Tests in the material testing institute prove: a weld seam created with a laser is as stable as the welded material. Observers are amazed and impressed: if the mating parts are welded with the laser, the material tears – but the seam holds. Conventionally welded sheets invariably tear in the area of the weld seam in tests on the tension test bench at a material testing institute.

"Laser welding won't pay off for me"
Web special on laser welding, example of heat conduction welding

The fact is that the longer the welding time and the larger the outlay for reworking, the faster laser welding pays off. Even in the case of a lot size of one. If there are requirements when it comes to the seam quality, lots of reworking has to be carried out. Laser welding impresses here with visible seams of top visual quality – often without any reworking, such as grinding. Since less heat penetrates into the component during laser welding, there is barely any distortion and therefore no subsequent straightening. The significantly higher welding speed also saves time and therefore money.

"With MIG/MAG and TIG, I can weld everything I need"
Web special on laser welding, various material thicknesses

The conventional welding processes create lots of seams, but do not have anywhere near the diversity of a laser. For example, the laser can weld materials of different thicknesses together and create lap seams/a concealed T-joint. With laser welding, all conceivable seam forms are possible; many of them are also accessible on one side. Heat conduction welding creates seams with excellent surface quality here. In the case of deep penetration welding, a high-tensile, narrow, and deep seam is created. Both processes – heat conduction welding and deep penetration welding – also enable a significantly higher process speed.

"The outlay for constructing fixtures is too high for me"

Expensive fixtures are only required in very complex, exceptional cases. The clamping system can often also be produced with sheet metal constructions and standard parts. Variants can then be constructed quickly later from the already available fixtures. TRUMPF provides start-up support with fixture construction with the seminar on fixture design. In two days, the experts enable the participants to construct fixtures from sheet metal so that they can process laser welding parts even more efficiently. Welding without a fixture is also possible. To do so, you have to pre-fix the component; you simply have to fix it in the machine for welding.

"For laser welding, I have to produce much too precisely"
Web special on laser welding, example of FusionLine

It is easy to get started with laser welding. The TruLaser Weld 5000 with FusionLine allows you to compensate for inaccuracies in components during the welding process and even to close gaps of up to one millimetre in width. The results from FusionLine when it comes to weld seam quality and process speed are significantly better here than those of conventionally welded components, even if they are not quite as good as in the case of a pure laser seam. This means that users can laser weld cost efficiently, even if their component range is not optimised to laser welding.

Save on annoying reworking and repairs

Laser welding with TRUMPF stands for top-quality seams, often without any reworking, such as grinding or polishing, at all. Distortion is also minimal, meaning that straightening work is eliminated. In addition, you also save on consumables, such as grinding wheels. Combined with the laser, which welds quickly and highly productively, you can achieve enormous time benefits. It can generally be said that the longer the welding time and the more reworking you have to do, the quicker laser welding pays off.

Laser welding pays off for you

Numbers don't lie. We would therefore like to present you with a financial comparison of TIG manual welding and laser welding. The workpiece is a hood made of mild steel which has to meet high visual requirements. The result is that, with automated laser welding, you can reduce time required by up to 90% and reduce costs per part by 65% in the case of joining. Catapult your sheet metal processing into a new league. If you utilize up to 50% of your system in a shift with these types of components, it pays off in around two years.

Graphic, laser welding

This calculation is based on average values typical for Germany and a quantity of 500 hoods that are produced in 10 units of 50 pieces each. In the case of TIG manual welding, the welding time per part is approx. 45 minutes; when using automated laser welding, it is only approx. 2 minutes. Reworking is also eliminated when laser welding this hood. In the case of a conventional welding process, this adds another 10 minutes to each part. This gain in time per part more than compensates for time spent programming the order, the costs for the fixture and the setup time per lot, which are comparatively higher in the case of laser welding.

The battle: A time comparison of MAG welding vs. laser welding

Two mild steel sheets of 60 cm in length and 1 mm in thickness are welded. The differences in distortion that the sheets exhibit after processing can be seen quickly. Based on the low heat input into the component, which is characteristic for laser welding, subsequent straightening is not required. The higher process speed alone reduces time required by around 93%. The elimination of the straightening process therefore increases productivity.

The proof: Simply beautiful and stable seams

Become more flexible: Three manufacturing methods

Heat conduction welding, deep penetration welding, or FusionLine: Depending on the component, you can choose the right welding process with flexibility – without having to retool. This applies to all common materials, such as mild steel, stainless steel, or aluminum.

Design freedom due to new seam geometries

Many industries benefit from laser welding

Various fields of application

Whether it's in mechanical engineering, kitchen building, and furniture building, in installation, design, medical, and lamp technology, the food industry, container and apparatus construction, or the electronics sector – weld seams are present in lots of different places. Deep, stable, and tight seams are a must in water tanks, among other things. On the other hand, in the case of a counter segment, beautiful visible seams with a smooth, rounded surface are what counts. The requirements can be very various. Yet, the same thing applies everywhere: The quality of the seam is what counts.

Get started right away – with our turnkey system

TruLaser Weld 5000
TruLaser Weld 5000

The right machine for laser welding in a modern sheet metal processing system Robots, lasers, processing optics, safety cabin, and positioning units: The turnkey system can be individually adjusted to your needs for automated welding with the laser.

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