SISMA SWT

Precision Welding for Mould Repair and Tooling

The SISMA SWT is a professional laser welding system engineered for the repair, maintenance and modification of moulds, dies and precision tooling. Available with both Nd:YAG and fibre laser sources, it delivers accurate, repeatable welds while providing excellent access to complex workpieces through its ergonomic design and generous working area.
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Precision Welding for Mould Repair and Tooling

Engineered for Industrial Mould Repair

Designed specifically for industrial mould repair, the SISMA SWT combines precision laser welding technology with a robust, ergonomic workstation capable of handling workpieces up to 400 × 400 × 320 mm and 120 kg. Its 180° opening door allows operators to position large moulds quickly, while the precision motorised axes enable accurate welding in narrow grooves, internal corners and difficult-to-access areas. The SWT is available in Class 1 enclosed and Class 4 open configurations and can be specified with either a traditional flash-lamp Nd:YAG laser or a modern fibre laser source. Advanced software allows welding recipes to be saved, recalled and monitored, ensuring consistent results while supporting remote diagnostics and efficient production workflows. Depending on the filler wire selected, repaired areas can achieve high hardness levels, often eliminating the need for additional heat treatment.
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Mould Repair

Purpose-built for repairing moulds, dies and precision tooling.

Deep Access

Reach narrow grooves, edges and complex weld locations with ease.

Repeatable Welding

Advanced software ensures consistent welding quality across every repair.

Key Features

The SISMA SWT delivers the precision, accessibility and reliability required for demanding mould maintenance and engineering applications.
  • Repairs moulds up to 400 × 400 × 320 mm weighing up to 120 kg.
  • Available with Nd:YAG or fibre laser technology in Class 1 or Class 4 configurations.
  • Precision motorised axes, recipe management and remote diagnostics improve welding quality and productivity.

Precision laser welding of industrial moulds

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Technical data 100 150 150F 300F 450F
Source type YAG (flash lamp) YAG (flash lamp) Fiber Laser Fiber Laser Fiber Laser
Wavelength 1064 nm 1064 nm 1070 nm 1070 nm 1070 nm
Average laser power 100 W 150 W 150 W 300 W 450 W
Max peak power 9 kW 10,5 kW 1,5 kW 3 kW 4,5 kW
Max pulse energy 70 J 75 J 15 J 30 J 45 J
Pulse duration 0,3 – 25 ms 0,3 – 25 ms 0,3 ms – 10 ms/CW 0,3 ms – 10 ms/CW 0,3 ms – 10 ms/CW
Laser spot diameter 0,3 mm – 2 mm 0,3 mm – 2 mm 0,1 mm – 2 mm 0,1 mm – 2 mm 0,1 mm – 2 mm
X-Y axes stroke 300 x 200 mm 300 x 200 mm 300 x 200 mm 300 x 200 mm 300 x 200 mm
Z axis stroke 320 mm 320 mm 320 mm 320 mm 320 mm
Axes speed 0,1 – 25 mm/s 0,1 – 25 mm/s 0,1 – 25 mm/s 0,1 – 25 mm/s 0,1 – 25 mm/s
Max load weight 120 kg 120 kg 120 kg 120 kg 120 kg
Max piece size 400 x 400 x h 320 mm 400 x 400 x h 320 mm 400 x 400 x h 320 mm 400 x 400 x h 320 mm 400 x 400 x h 320 mm
Dimensions 850 x 1200 x h1500 mm 850 x 1200 x h1500 mm 850 x 1200 x h1500 mm 850 x 1200 x h1500 mm 850 x 1200 x h1500 mm
Weight 530 kg (cl. 4)560 kg (cl. 4) 530 kg (cl. 4)560 kg (cl. 4) 530 kg (cl. 4)560 kg (cl. 4) 530 kg (cl. 4)560 kg (cl. 4) 530 kg (cl. 4)560 kg (cl. 4)
Power supply 380V 3ph 3,5 kW 380V 3ph 4,5 kW 230V 1ph 1,6 kW 230V 1ph 2,2 kW 230V 1ph 2,8 kW
  • Motorised Spindle – Enables precise laser welding of cylindrical components with smooth, controlled rotation.
  • Rotating Lens – Allows easy adjustment of the laser head for improved access to complex welding areas.
  • Magnetic Hemispherical Stand – Provides stable, flexible positioning of workpieces during welding operations.
  • Adjustable Arm Joint – Allows the laser arm to be inclined for improved ergonomics and access to difficult-to-reach weld locations.
  • Foot Pedal Control – Hands-free operation for triggering the laser pulse and controlling the shielding gas supply.
  • Ergomodule Microscope Adjustment – Enables quick and comfortable height adjustment of the microscope for improved operator ergonomics and visibility.

The SISMA SWT is designed for precision laser welding, mould repair and tooling maintenance across manufacturing industries where accuracy and repeatability are essential. It is ideal for repairing injection moulds, die-casting tools, stamping dies, precision engineering components and production tooling without removing excessive material or affecting surrounding areas.

Its precision laser beam enables high-quality welds in deep cavities, narrow grooves, internal corners and complex geometries that are difficult to access using conventional welding methods. The SWT is widely used in toolmaking, automotive, aerospace, plastics manufacturing, metal forming and precision engineering, helping manufacturers extend tooling life, reduce downtime and minimise replacement costs.

You ask, we answer

The SISMA SWT is designed for the repair and maintenance of industrial moulds, dies and tooling. It enables precise laser welding on worn or damaged components, helping manufacturers extend tooling life and reduce production downtime.
The SWT is available with either a flash-lamp Nd:YAG laser or a fibre laser source. Fibre laser models offer higher energy efficiency, lower maintenance requirements and excellent performance for continuous industrial operation, while Nd:YAG systems remain well suited for many traditional mould repair applications.
Yes. The SWT is available in both Class 1 enclosed and Class 4 open configurations, allowing manufacturers to select the most appropriate system for their workshop and production requirements.

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