The MLW Series is a 4-in-1 handheld fiber laser welder performing laser welding, cutting, weld-seam cleaning and derusting in a single unit. Half the size of the previous generation with four-way casters and a handle for easy movement; it welds at many angles and joins dissimilar metals, 50%+ faster than conventional welding, and is operable after just a few hours of training.

Four advantages

Portable: compact + four-way casters, less floor space
Fast: 50%+ faster than conventional welding
Simple: join the line after ~8 hours of training
Versatile: multi-angle, dissimilar metals, 4-in-1

Laser vs. conventional

vs. TIG: needs skilled labour, high heat, poor for thin sheet, slower
vs. MIG: heavy pre-treatment, defects from oil/rust, distortion & limited angles
Laser: minimal HAZ, fast, tiny distortion, clean appearance — usually no rework

Applications

Automotive & motorcycle, steel structures
Precision parts, metal fabrication
Sheet-metal transformation (kitchenware, enclosures)

Specifications

Spec	MLW-1500W	MLW-2000W	MLW-3000W
Laser power	1500 W	2000 W	3000 W
Weld thickness · carbon steel	4 mm	6 mm	8 mm
Weld thickness · galvanized	4 mm	6 mm	8 mm
Weld thickness · stainless	3 mm	5 mm	7 mm
Weld thickness · aluminium	3 mm	4 mm	5 mm
Power supply	1φ 220V 50/60Hz	1φ 220V 50/60Hz	3φ 380V 50/60Hz
Wire diameter	0.8 / 1.0 / 1.2 / 1.6 mm	←	←
Assist gas	Argon or nitrogen	←	←
Max gas pressure	15 bar	15 bar	15 bar
Cooling	Water 10 L	Water 10 L	Water 15 L
Dimensions (L×W×H)	950×530×670 mm	950×530×670 mm	1300×690×950 mm
Body weight	≤141 kg	≤141 kg	≤260 kg
Wire feeder weight	16 kg (single) / 30 kg (dual)	←	←
Torch weight	0.8 kg	0.8 kg	0.8 kg
Environment	Temp 10–40℃ · humidity <70%	←	←

Recommended weld parameters (excerpt)

Material	Thick.	Scan speed	Scan width	Power	Wire	Type
Mild steel	1 mm	300	3	350 W	ER1.0	Butt/fillet
Mild steel	3 mm	300	3	1100 W	ER1.2	Butt/fillet
Mild steel	6 mm	220	3	2200 W	ER1.6	Butt/fillet
Stainless	2 mm	300	2	700 W	ER304 1.0	Butt/fillet
Stainless	4 mm	300	3	1500 W	ER304 1.2	Butt/fillet
Stainless	6 mm	220	3	2200 W	ER304 2.0	Butt/fillet

*Full parameter table by material/thickness available separately; scan speed in mm/s, scan width in mm.

Hardware & innovation

Raycus laser source: stable, continuous welding performance
Fast setup: quick-assembly/disassembly body & welding head
Ultra-light 0.8 kg torch: 15 m laser cable; remove the chuck to use as a laser cleaner
Water cooling: high efficiency, strong adaptability in extreme weather
Wire feeder: 0.8–1.6mm wire, 25–200 cm/min, dual-drive dual-feed, manual/auto, touchscreen
Three nozzles: wire-feed / standard / cutting

Welding techniques

Autogenous laser welding: high-power beam melts metal that reflows and solidifies; needs tight fit or minimal gap
Filler laser welding: same-material wire fed in to fill gaps for higher strength; ideal for gapped joints

Five factors for weld quality

Laser power (deep penetration only above the energy-density threshold)
Welding speed (too fast = shallow, too slow = burn-through)
Focus distance (positive/negative focus affects width & depth)
Weld width (spot too small/large both harmful)
Wire-feed speed (must match welding speed)

Intuitive control system

The touch interface shows current welding parameters and real-time alarms. A red indicator lights when the laser is active; the safety lock is grey normally and turns green when the head contacts the workpiece. Default welding mode is continuous, switchable to spot welding.

Scan speed: 2–6000 mm/s
Scan width: 0–5 mm (affected by scan speed)
Peak power: 0–rated power
Duty cycle: 0–100 (default 100)
Frequency: 5–5000 Hz (default 2000)

MLW