ALW 300
Advanced 300 W Nd:YAG Laser Welding with Precision Positioning and Programmable Process Control
Summary: The ALW 300 is an enclosed Nd:YAG laser welding system from ALPHA LASER for precision welding, repair welding and series production. It pairs a 300 W laser with 9 kW peak pulse power and 90 J pulse energy with motorised XYZ positioning for workpieces up to 400 kg, a Leica Ergotubus observation system, a 12.1-inch touchscreen, WINLaserNC programming and integrated fume extraction.
- 300 W Average laser power
- 9 kW Peak pulse power
- 90 J Pulse energy
- 400 kg Max. workpiece weight
Product description
The ALPHA LASER ALW 300 is an advanced enclosed Nd:YAG laser welding system developed for precision welding, component repair and repeatable industrial series production. Equipped with a 300 W average laser power, 9 kW peak pulse power and 90 J pulse energy, it delivers controlled and consistent welding performance for demanding manufacturing applications.
Designed for flexibility, accuracy and operator comfort, the ALW 300 combines a spacious enclosed working chamber, motorised XYZ-axis positioning, joystick control and an ergonomic Leica Ergotubus observation system. Its programmable welding capabilities, adjustable pulse shaping and integrated fume extraction make it suitable for applications requiring precise heat input, repeatability and reliable weld quality.
The ALW 300 is designed to provide precision and convenience for industrial welding, component repair and specialised manufacturing applications. Its pulsed Nd:YAG laser operates at a wavelength of 1064 nm and supports adjustable pulse duration and welding spot diameter, allowing operators to adapt the welding process to different materials, component geometries and thicknesses.
A key feature of the ALW 300 is its motorised XYZ-axis positioning system, which allows accurate workpiece movement through an integrated joystick. The spacious working chamber and large mounting plate accommodate workpieces weighing up to 400 kg with central loading, making it suitable for both small precision components and larger industrial parts.
The system features a Leica Ergotubus microscope observation system, a 12.1-inch touchscreen display and adjustable laser pulse shaping. It also supports programmable welding processes through WINLaserNC software, enabling teaching, process programming and repeatable series production.
With its enclosed laser-safe housing, integrated fume extraction and optional automatic filler-wire feeding, the ALW 300 provides a versatile solution for precision welding and industrial manufacturing applications.
Optional Accessories
- Turn-and-tilt focusing objective for flexible welding positions
- Rotary-axis module for circular and rotational welding applications
- Micro-welding device for delicate and miniature components
- Automatic laser filler-wire feeding system (LAFet)
- Ergo wedge for improved operator positioning
- Camera system for demonstrating and monitoring welding operations
- Crossjet for additional protection of optical components
- External regulated or unregulated cooling system
- WINLaserNC software for programmable welding operations
Features
High-Performance 300 W Nd:YAG Laser Source
Equipped with a 300 W Nd:YAG laser source operating at 1064 nm, the system delivers up to 9 kW peak pulse power and 90 J pulse energy for demanding precision welding applications.
Precise Pulse Control
Adjustable pulse duration from 0.5 to 20 ms and pulse frequency up to 100 Hz allow operators to fine-tune welding parameters according to material properties and application requirements.
Advanced Pulse Shaping
Adjustable power curves within each laser pulse help control energy delivery, optimise heat input and achieve consistent welding results across different component geometries.
Motorised XYZ-Axis Positioning
The three-axis motorised movement system enables accurate workpiece positioning through an integrated joystick. The vertical Z-axis supports workpieces weighing up to 400 kg with central loading.
Spacious Working Chamber
The large enclosed working chamber accommodates components of different sizes and geometries. Wide-opening doors simplify loading and unloading, supporting efficient handling of industrial workpieces.
Ergonomic Leica Observation System
The Leica Ergotubus observation system provides comfortable visual access to the welding area, allowing operators to work with improved viewing ergonomics, including when wearing glasses.
WINLaserNC Programmable Control
Compatible with WINLaserNC software for programmable welding operations, teaching and repeatable series production. This helps simplify recurring welding tasks and improve process consistency.
Integrated Fume Extraction
The built-in extraction system helps remove welding fumes from the working chamber, maintaining a cleaner and more comfortable operating environment.
Automatic Wire Feeding Compatibility
The system supports optional automatic laser filler-wire feeding through the LAFet system. It can accommodate wire diameters from 0.2 to 0.8 mm, with finer 0.1 mm wires possible using the optional fine-welding function.
Laser-Safe Enclosed Design
The fully enclosed laser-safe housing provides a protected working environment for industrial production areas and meets the manufacturer's stated Performance Level d safety requirements.
Specifications
| Parameter | ALW 300 |
|---|---|
| Laser Type | Nd:YAG |
| Wavelength | 1064 nm |
| Average Power | 300 W |
| Peak Pulse Power | 9 kW |
| Pulse Energy | 90 J |
| Pulse Duration | 0.5–20 ms |
| Pulse Frequency | Single pulse–100 Hz |
| Operating Mode | Pulsed |
| Welding Spot Diameter | 0.2–2.0 mm |
| Focusing Objective | 150 mm |
| Pulse Shaping | Adjustable power curve within a laser pulse |
| Display & Control | 12.1-inch touchscreen |
| Software Compatibility | WINLaserNC |
| Observation System | Leica Ergotubus with eyepieces for glasses wearers |
| Working Chamber (W × D × H) | 1080 × 850 × 450 mm |
| Mounting Plate (W × D) | 600 × 475 mm |
| Maximum Workpiece Weight | 400 kg, central load |
| Workpiece Movement | Motorised through joystick |
| Movement Range (X × Y × Z) | 478 × 340 × 332 mm |
| External Dimensions (W × D × H) | 1190 × 1400 × 1740 mm |
| External Dimensions with Display Folded | 1190 × 1400 × 1500 mm |
| Weight | Approx. 870 kg |
| Electrical Connection | 3 × 400 V / 50–60 Hz / 3 × 16 A |
| External Cooling | Optional |
| Fume Extraction | Integrated |
Maintenance & care
- Clean the Leica observation optics and protective glass regularly using approved cleaning materials.
- Keep the working chamber and mounting plate free from dust, metal particles and welding residue.
- Inspect laser focusing optics and protective components periodically.
- Check the integrated fume extraction system and maintain filters according to manufacturer recommendations.
- Ensure smooth movement of the motorised X, Y and Z axes.
- Inspect joystick controls and touchscreen functionality regularly.
- Check optional rotary-axis mechanisms and automatic wire-feeding equipment.
- Verify electrical and external cooling connections according to manufacturer guidelines.
- Maintain proper ventilation and operating conditions around the machine.
- Schedule periodic preventive maintenance through qualified service technicians.
May we help?
- What type of laser does the ALW 300 use?
- The ALW 300 uses a 300 W Nd:YAG laser with a wavelength of 1064 nm, operating in pulsed mode. It delivers 9 kW peak pulse power and 90 J pulse energy, with pulse durations of 0.5–20 ms, pulse frequencies from single pulse to 100 Hz, a 0.2–2.0 mm welding spot and a 150 mm focusing objective.
- How does the ALW 300 compare with the ALW 200?
- The ALW 300 has 300 W average laser power, compared with 200 W on the ALW 200. Both offer 9 kW peak pulse power, 90 J pulse energy and pulse frequencies up to 100 Hz, and share the same 1080 × 850 × 450 mm working chamber, 478 × 340 × 332 mm movement range and 400 kg workpiece capacity.
- What size of components can the ALW 300 handle?
- The enclosed working chamber measures 1080 × 850 × 450 mm, with a 600 × 475 mm mounting plate for workpieces up to 400 kg (central load). Motorised X, Y and Z axes, controlled by joystick, offer a movement range of 478 × 340 × 332 mm, and wide-opening doors simplify loading larger parts.
- Can the ALW 300 be programmed for series production?
- Yes. The ALW 300 supports programmable welding through WINLaserNC software, which enables teaching, process programming and repeatable series production. Laser parameters are set on its 12.1-inch touchscreen, and optional LAFet automatic filler-wire feeding is available.
- What are the power requirements of the ALW 300?
- The ALW 300 requires a 3 × 400 V / 50–60 Hz / 3 × 16 A supply and weighs approx. 870 kg. Fume extraction is integrated, and external cooling is available as an option.