Laser Welding

Montanstahl is worldwide market leader in welding solid and hollow steel and stainless steel profiles with laser technology. The profile components fused together are predominantly laser- or plasma-cut flat strips, but can also be other solid profiles like rounds, squares or finished hollow profiles like tubes. The welds are made with powerful lasers without the use of filler material, producing very small weld seams. Virtually all commercially available mild, carbon and stainless steels can be welded. Monolithic welds up to a depth of 25 mm are possible.

Sharp edged profiles

Laser fused sections generally feature small internal and external radii and can be classified as sharp corner profiles (SCP). We produce standard structural profiles like angles, channels, tees or heavy-duty beams (HEA, HEB, IPE, W, S) as well as squares and rectangles hollow sections, are produced on a regular basis.

Flexibility on quantity and sizes

This manufacturing technology is very flexible when it comes to quantities. Projects with small volumes, or even 1 bar prototypes, can be served as well as large projects with more than 100 tons per batch. The maximum bar length is 16.000 mm with a profile width of 1.000 mm and a height of 2000 mm. Small shapes, starting from 20 x 20 mm, can be produced as well. The components are mainly welded at an angle of 90° but, if required, even tighter or larger angularity can be matched manufactured.

Laser welded profile surface

Laser fused profiles generally features a much better surface finish than hot-rolled or extruded products, as the raw material components are cut out from high quality hot rolled plate. After welding, the sections are straightened, sand blasted and in case of stainless steel pickled or passivated, to eliminate all impurities caused by the welding process. On hollow, angle and channel sections the external welds are removed prior to sand blasting, so that welds are no longer visible and these profiles have smooth and flat surfaces.

Quality control

The profiles undergo a stringent quality protocol, involving continuous checks with dedicated measuring equipment throughout the whole manufacturing process. The products and the process have been approved by several external authorities like TÜV (German Technical Inspectorate) and do comply with EN ISO 13919-1, EN ISO 15614-11, EN ISO 15609-4 and ASTM A276, A479 and A484. In 2012 Laser fused profiles by Montanstahl achieved the official product standard ASTM 1069.

Profile Data

Material thickness

2 mm – 80 mm

Size range

max. 2000 mm x 1000 mm

Weight

from 0.5 kg/m to 200 kg/m

General tolerances

±0.5 mm

Quick facts:

Solid and hollow profiles
High design flexibility
Small to large volume production
Mid and large size profiles
Good surface finish
Prototyping possible

Materials:

Unalloyed or low alloy structural steel
Fine-grained structural steel
Austenitic stainless steel
Ferritic stainless steel
Duplex stainless steel
Nickel base alloys