Post of 20 Feb 2015
Post of 06 Nov 2014
New press kit ''HybWeldCut''

Download it now!

Post of 07 Oct 2014
Les démonstrations commencent!

La technologie HYBWELDCUT sera présentée lors d'une première session de démonstrations organisée du 14 au 24 octobre et du 12 au 27 novembre chez Malex S.A.

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Post of 02 Mar 2015
Welding the way you want

For joining coils, a machine made by Belgian company Malex switches flexibly between resistance welding and laser welding depending on the type of steel, and also uses the laser source for cutting.

Post of 21 Jun 2014
Un outil unique au monde et 100% made in Charleroi

Aujourd'hui, grâce à l'aide de la région wallonne, Malex dispose d'un démonstrateur technologique de soudeuse-découpeuse.

Post of 20 Jun 2014
Malex développe une machine à souder révolutionnaire...

Une technologie plus rapide, plus fiable, polyvalente, réductrice de stress pour les opérateurs.

Post of 23 Jun 2014
La soudeuse révolutionnaire de Malex

Malex innove à plusieurs égards. D'abord, elle recourt au laser à solide, plus compact, plus flexible, plus fiable et moin énergivore....

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Process: Resistance seam
Type of steel:Cold-rolled
Thicknesses:0,2 mm - 3 mm
Widths: 510 mm - 2000 mm
Applications: Continuous
Types of steel: Special steels, silicon steels, stainless steels and other varieties
Joint configurationconfigration

Advantages of this technique

High reliability in rapid continuous treatment processes on sheet metal up to 3 mm thick

Single-pass (Pres-Lap) and double-pass (Prep-Lap) welding

Double-cut shear cutting

Cycle time:

  • One strip 1900 mm wide and 2.1 mm thick:
    • 25 seconds (Pres-Lap)
    • 38 seconds (Prep Lap)


Very strong weld

Weld reinforcement less than 10% of the thickness of the strip

Possible options: on-line reprofiling and pre-loading system

Pres-Lap / Description:

These seam welding machines, developed from the Narrow-Lap model, are designed for fast  steel industry production lines handling thickness ranges of 0.2 mm to 3 mm.


The welded joints can undergo the same treatment as the sheet metal and can be retained during winding. The small reinforcement of the weld does not mark the adjacent turns. The single-pass welding, crushing power and high welding speed give this equipment an exceptionally short cycle time for the thickness range handled. Consequently, the size of the accumulators of the entry section and the number of dancer rolls are reduced, which leads to a considerable reduction in costs and equipment.

The Pres-Lap machine is equipped with a hydraulically actuated double squaring shear.   Planishing wheels are mounted directly behind the welding wheels. The welding operation is thus immediately followed by flattening of the weld while it is still hot. The welded joints give the best possible combination of mechanical strength and appearance: the mechanical strength of the joint is greater than the strength of the strips in the annealed state and its reinforcement will be at most 10% of the thickness of the strip (with a minimum of 0.07 mm).


For example, the time required to carry out a complete butt welding cycle is 25 seconds for a strip 1900 mm wide and 2.1 mm thick, excluding clamping.


With the MALEX S.A. pre-loading system, the total line stoppage time will be limited to 34 seconds.


Prep-Lap / Description:

The Prep Lap welding machine is the ancestor of the Pres Lap machine. It has the same equipment as the Pres Lap and presents the particularity of preparing the joint by a first pass with the planishing  wheels. The welding wheels and planishing  wheels will then carry out the welding and the final planishing to reduce the reinforcement to a minimum. The cycle time is longer than that of the Pres-lap machine because of the two passes. Prep-Lap machines are currently used on the majority of production lines for cold-rolled steels up to thicknesses of 3 mm.


For example, the welding cycle time will be 38 seconds for a width of 1900 mm and a thickness of 2.1 mm.


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