ALM 250
A mobile Nd:YAG laser welding system with 250 W average power, 90 J pulse energy, 9 kW peak pulse power and an electrohydraulic laser arm for on-site mould and tool repair.
- 250 W Average laser power
- 9 kW Peak pulse power
- 90 J Pulse energy
- 1064 nm Laser wavelength
Product description
The ALPHA LASER ALM 250 is a mobile Nd:YAG laser welding system designed for industrial welding, mould repair and on-site maintenance applications. Equipped with a 250 W average laser power, 9 kW peak pulse power and 90 J pulse energy, it supports pulsed laser welding across different workpiece geometries.
Its mobile configuration allows the laser system to be brought directly to the workpiece, reducing the need to dismantle large moulds or components. The electrohydraulically controlled laser arm can be positioned and secured at the required working location. With joystick operation, programmable user coordinate control and flexible laser head positioning, the ALM 250 supports welding operations across different industrial applications.
Technical Accessories
- ALFT-HDMI Camera System – Allows the welding process to be displayed on an external monitor. The camera is mounted below the microscope attachment and includes a power supply, HDMI cable and laser connection cable.
- Ergo Wedge (5°–25°) – Allows the microscope binocular to be tilted for improved operator ergonomics.
- Flexible Halogen Bulb – Provides additional lighting for the working area.
- Magnetic Holding Sphere – Enables quick positioning and secure holding of the workpiece in different working positions.
- Perpendicular Objective with LED Ring Light – Provides even, flicker-free illumination of the workpiece. Available with 150 mm or 300 mm focusing objectives.
- Rotary Axis Module – Designed for welding cylindrical components. Supports horizontal-to-vertical rotational positioning and includes a 125 mm chuck with a 24 mm inside diameter.
- Touch Operating Unit for 4-Axis Control – Allows adjustment of four movement axes in semi-automatic mode and triggering of laser pulses. The laser pulse and shielding gas are triggered simultaneously.
- Turn and Tilt Objective – Allows the laser beam to be directed up to 40° from the vertical across a full 360° rotational range. Helps access difficult-to-reach welding areas without repositioning the workpiece.
Industrial Applications
The ALM 250 is suitable for applications where mobility, accessibility and flexible laser welding are required.
- Mould and tool repair
- On-site welding and repair services
- Large component repair
- Industrial maintenance and repair
- Welding at multiple production locations
- Repair operations at customer facilities
- Welding of cylindrical components with the optional rotary axis
- Welding in difficult-to-access component areas
The system is particularly suitable for service providers requiring flexible on-site welding solutions and large manufacturing facilities with multiple points of operation.
Features
250 W Nd:YAG Laser Source
Equipped with a 250 W Nd:YAG laser operating at a wavelength of 1064 nm, designed for industrial pulsed laser welding applications.
High Peak Pulse Power
Provides 9 kW peak pulse power and 90 J pulse energy for controlled laser welding operations.
Mobile Laser Welding System
The mobile configuration allows the machine to be moved within manufacturing facilities or to customer locations for on-site welding and repair operations.
Electrohydraulic Laser Arm
The laser arm can be positioned and secured using electrohydraulic brakes, allowing operators to access different working positions.
Multiple Operating Modes
Supports manual welding through joystick control, semi-automatic operation and an external operating unit with pulse function.
Programmable Coordinate Control
The user coordinate control can be programmed within a 50 × 50 mm range for controlled welding operations.
Adjustable Laser Head
The laser head can be rotated left and right. Optional turn-and-tilt objectives and different focusing lenses help access difficult-to-reach areas of the workpiece.
Precision Joystick Control
The joystick allows operators to position and guide the processing head during welding operations.
Flexible Workpiece Accessibility
The adjustable laser arm and processing head allow access to different workpiece positions without requiring extensive movement of the component.
Laser Safety System
The ALM system meets Performance Level d safety requirements and is described by ALPHA LASER as the first system with TÜV certification for this safety level.
Laser Specifications
| Specification | ALM 250 |
|---|---|
| Laser Type | Nd:YAG |
| Wavelength | 1064 nm |
| Average Power | 250 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 and Operating System
| Specification | ALM 250 |
|---|---|
| Display | Display with membrane keyboard |
| Laser Parameter Adjustment | Multifunctional footswitch |
| Motor Control Configuration | Touchscreen |
| External Operating Unit | Optional |
| Operating Modes | Manual and semi-automatic |
Microscope Specifications
| Specification | ALM 250 |
|---|---|
| Microscope Attachment | Leica |
| Eyepiece Magnification | 10× |
| Optional Magnification | 16× |
| Eyepiece Compatibility | Suitable for users wearing glasses |
Work Area Specifications
| Specification | ALM 250 |
|---|---|
| Movement Speed (X, Y, Z) | 0–25 mm/s |
| Movement Range (X, Y, Z) | 120 × 110 × 800 mm |
| Lowest Working Point | 530 mm |
| Highest Working Point | 1590 mm |
| Arm Deflection | 1300 mm |
| User Coordinate Control | 50 × 50 mm |
Machine Dimensions
| Specification | ALM 250 |
|---|---|
| Width | 730 mm |
| Depth | 1410 mm |
| Height | 1585 mm |
| Machine Weight | 320 kg |
Electrical Specifications
| Specification | ALM 250 |
|---|---|
| Electrical Connection | 3 × 400 V |
| Frequency | 50–60 Hz |
| Current | 3 × 16 A |
| External Cooling System | Connection prepared |
Maintenance & care
Follow the manufacturer's recommended maintenance schedule for the laser source, optical components, microscope, laser head and movement mechanisms. Keep optical surfaces clean using approved cleaning procedures, regularly inspect the laser arm and electrohydraulic brakes, and ensure electrical connections and safety systems are maintained according to the manufacturer's instructions.
May we help?
- What type of laser does the ALPHA LASER ALM 250 use?
- The ALM 250 uses a pulsed Nd:YAG laser source with a wavelength of 1064 nm and an average laser power of 250 W.
- What is the peak pulse power and pulse energy of the ALM 250?
- The ALM 250 provides 9 kW peak pulse power and 90 J pulse energy, with a pulse duration of 0.5–20 ms and a pulse frequency from single pulse to 100 Hz.
- Why use a mobile laser welding system like the ALM 250?
- The mobile configuration lets the laser system be brought directly to the workpiece, so large moulds and components can be welded or repaired on-site without being dismantled.
- What is the working range of the ALM 250?
- The ALM 250 has a movement range of 120 × 110 × 800 mm (X, Y, Z), a working height from 530 mm to 1590 mm and an arm deflection of 1300 mm.