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LASER WELDING AND REPAIR : Moldmax laser welding

Your mould is worn out and flashing ? A core or insert of your tool has cracked? Do you want to join 2 broken pieces of a part into one without damaging the rest of a part ? A cooling system of a tool is leaking?


Extremely Powerful, Reliable and Adaptable

The LW-Moldmax-II combines flexibility and stability in servicing and repairing small precision components for the aerospace industry as well as large die-casting molds that are, for example, required for the manufacturing of automobile bumpers. The mobile laser system can easily be moved and fixed in a stable position.  The movement of the axes permits a very long traverse range, which is accomplished via the joystick. The welding position can be determined at a precision of 0.1 mm.

The Lasermach LW-Moldmax-II is an ideal solution for big or recessed work pieces. As a result of the swiveling arm and the mobile resonator, the welding of large components is virtually independent of geometry and position! In the process, 3D geometries are easily mastered. The stable and rigid construction gives you the opportunity to extend or raise the standardized swivel arm to achieve an even greater traverse range.

UNIQUE PATENTED HEAD: 360° x 360° welding

LW-Moldmax-II Universal Jig Welding Workstation offers a significant, competitive advantage for today’s operators looking to unleash the power of hot light, benefit from a comfortable, ergonomic design and ensure optimal platform flexibility for the widest range of on-site mold repair applications. Our head is the most flexible on the market, we reach all angel possible and we are the only one who always welds with a perpendicular laser beam.

Mold Repair: Laser Welding Delivers Lower Costs and Better Quality

While TIG (tungsten inert gas) welding may be the go-to for mold welding in many shops, high-power pulsed laser welding or fiber laser welding is a higher-quality process that can deliver repaired molds that perform like new.

Repairing a worn mold is always going to be cheaper than replacing it. The catch is how well that refurbished mold is going to perform in the future. Will it produce parts of equal quality to the original? How long will it last until it needs repair again or has to be scrapped?

For molds going to the welding repair shop, the quality of the welds and the welding process has everything to do with answering those questions. The most common practice to rebuild worn cavity and core surfaces is with TIG (tungsten inert gas) welding.  However, mold users and plastics processors will find that the alternative, pulsed laser welding or fiber laser welding, delivers a much superior result with less damage to the base material, so the mold will produce better quality parts and last significantly longer after the repair.

The primary argument for laser welding over conventional TIG or micro TIG welding is that the laser delivers a higher quality end result because it does less collateral damage to adjacent areas of the weld (such as the heat-affected zone). With a conventional welding process, the material in that zone becomes softer and more likely to wear. Microcracks and/or porosity in the weld itself will result in poor surface quality and shortened life of the tool.

Besides of this primary advantage, other benefits of today’s laser welding technology include:

  1. Ability for molds to be repaired multiple times
  2. Quicker repair of molds with much faster machining or bench time
  3. Portable and flexible to reach almost any feature, even in large molds
  4. Less expensive from a total-cost perspective and lasts longer


The rising demand for laser welding solutions for very small series or individual parts motivated us to develop a new laser welding system for individual needs.  In addition to our own practical experience, we also implemented suggestions from our customers.  The practically-oriented operation of the laser welding system offers sufficient user comfort for efficient laser welding.

The requirements placed on a workstation for laser welding can vary a great deal, depending on the job. They depend on the size and geometry of the workpiece to be processed and on the frequency of laser use. With the LW MOLDMAX II, all variations are possible: manual, joystick-guided or programmed transverse feed motion are all options, as are having the workpiece or the welding optics carry out the required movements them-selves.

Laser mould repair by laser welding

MOLDMAX 2 - laserwelding for moulds

Lasermach provides an an intelligent solution to process on parts regardless of the geometry. All 3-axes are integrated into the welding head. The laser beam is delivered to the welding head by fiber optic cable. The pivoting welding head allows easy positioning and...

Laser type   Nd: YAG Pulsed - Soon available fiber laser    
Wavelength nm 1064    
Pulse width ms ≤25    
Laser spot size (focal diameter) mm 0,1 ~ 3,0    
Pulse frequency Hz ≤100    
Laser output focus length mm 150    
Protective gas Argon,Xenon,..    
Worktable size mm 500 × 350    
Worktable bearing load kg 200    
X-axis mm 300 – in head    
Y-axis mm 200 – in head    
Z-axis mm 300 - in table    
Travel control Manual / Joystick    
Rotation degree ° 360° (adjustable) x 2    
Magnification   30X    
Chiller   Water cooling system 1 HP    
Welding wire dimension mm 0,1 ~ 1,0    
Reach of arm Radius 2000MM    
Max height under laser head   1500mm (standard)