Laser-welded special profiles

Laser-welded profiles are welded to one special profile from two or more material strips without any additives. The construction steel strip material can be cut to any required length from coils with width ranging from 3 mm to 20 mm. Above this material width and for stainless steels from 14mm on, plate-sheets are usually used as primary material, since they are regularly available in 6 to 12 m lengths. During laser welding, the contact surfaces of the steel strips are directly welded to one another. This is why the 8 – 10 mm penetration depth of the laser on each side barely leaves any visible weld seam.

Laser welded profiles are geometrically flexible and manufacturable in small and large quantities.

Compared to conventional welded profiles, laser-welded profiles offer much tighter tolerances and lower stresses. The profiles can be optimised for mass inside the profile geometry by welding of different steel strip widths. They are sharp-edged independently of the employed material width. Outside weld seams are machined and almost invisible during close inspection.


Examples of specific solutions

1| Laser welding allows for the creation of hybrid profiles composed of construction steel and high-grade steel components. The high quality material is only used in positions where it is technically required.

 

 

 

 

2| Laser welding allows for the creation of hybrid profiles composed of construction steel and high-grade steel components. The high quality material is only used in positions where it is technically required.

 

 

 

 

3| Hollow profiles with several chambers can be produced. These can also be welded according to the pressurised equipment guideline, so as to simultaneously serve as feed and return for heating circuits with additional expandable and lockable function canal for cable guides. Laser welded profiles are welded with general admittance.

 

 

 

 

4| Newly developed guides allow for the creation of cleanly guided weld seams in inaccessible areas as well as the creation of profiles with tight tolerances thanks to minimal heat input.

 

 

 

 

5| Even the creation of load-bearing trapezoidal profiles from construction or high-grade steels is possible, allowing for extended degrees of freedom for example in the design of load-bearing structures for glass facades. The weld seams are also invisible for this manufacturing process.

 

 

 


Laser References

1| For this new development we use a combination of rolled and laser-cut components. Montanstahl's rolling technology allows for manufacturing of undercut functional grooves. These grooves may be used for example to hold link blocks for the fixation of isolating glass panels on glass facades. Further parallel grooves for rubber gaskets are possible.

 

 

 

 

 

 

 

2| The profile is a combination of rolled and laser-cut components. Here we combine the greater load-bearing capacity of steel with the complex form-giving possibilities of aluminium profiles so as to optimally use the advantages of both materials optimally. The steel profile is thereby composed of laser cut sheets with a hot-rolled component. The aluminium is clipped onto the steel profile and is disconnected from the steel by a thin gliding profile.

 

 

 

 

 

 

 


Examples of laser-welded special geometries

Type B -min. B -max. H -min. H -max. Length -max. S -min. S -max. T -min. T -max. Weld width Ra D
L-profile 30 400 30 1000 15.000 3 30 3 30 ≤ 2 0.5
U-profile 30 400 30 1000 15.000 3 30 3 30 ≤ 2 0.5
Tube profile 30 400 50 1000 15.000 3 30 3 30 ≤ 2 0.5
H-profile 30 400 30 1000 15.000 3 30 3 30 ≤ 2 0.5
TR-profile 30 400 50 1000 15.000 3 30 3 30 ≤ 2 0.5 25/40
T-profile 30 400 30 1000 15.000 3 30 3 30 ≤ 2 0.5

all measurment units in approx mm


Materials and surfaces

Manufacturer qualification according to DIN 18800-7

together with evaluation according to DIN EN ISO 13919-1

Profile types relevant product types*
L-profile DIN EN 10056-1 & 2
U-profile DIN EN 10279
Tube profile DIN EN 10219
H-profile DIN 1025
TR-profile Factory standard
T-profile DIN EN 10055

*tighter tolerances possible after agreement


Regularly processed qualities:

Construction Steel

> S235 J2

> S275 J2

> S355 J2

Stainless Steel

> 1.4301 / 1.4307

> 1.4401 / 1.4404

> 1.4571

> 1.4539

> 1.4828

> 1.4841

Duplex

> 1.4162

> 1.4362

> 1.4462

> 1.4410


Realised Steel hybrid variations:

> Austenite with austenite

> Ferrite with ferrite

> Austenite with ferrite


Regularly created surfaces:

> blasted

> pickled

> ground

> polished



Information material

Montanstahl Image Brochure

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