Greenstone Portable Laser Additive and Subtractive Repair System

Presentation of the equipment's characteristics

The Greenstone GPortaLAM® Portable Laser Additive and Subtractive Repair System is designed for intelligent on-site metal repair, laser cladding restoration, and hybrid additive manufacturing applications in demanding industrial environments. Combining portable laser cladding technology with precision grinding and adaptive motion control, the system provides efficient repair solutions for large, high-value, and difficult-to-disassemble components directly at the customer site.

The equipment integrates modular portable architecture, intelligent visual positioning, adaptive path planning, laser additive repair, and subtractive finishing processes into one compact platform. It is widely used in industries such as power generation, oil & gas, mining, metallurgy, marine engineering, heavy machinery, mold repair, and industrial manufacturing for repairing worn, corroded, cracked, or fatigued metal components. With high flexibility, rapid deployment capability, and intelligent process control, the Greenstone GPortaLAM® system significantly reduces downtime, maintenance costs, and transportation requirements while improving repair efficiency and equipment reliability.

GPortaLAM® Series

Portable Laser Additive and Subtractive Repair System

Equipment Background

In industries such as energy, mining, petrochemical, metallurgy, marine engineering, and heavy manufacturing, critical components often suffer from wear, corrosion, fatigue, impact damage, and dimensional loss under long-term high-load operation. Traditional repair methods usually require component disassembly, transportation, welding, machining, and long production shutdowns, resulting in high maintenance costs and low repair efficiency.

The Greenstone GPortaLAM® portable laser repair system is developed specifically for intelligent on-site metal restoration and hybrid additive manufacturing applications. By combining laser cladding deposition, adaptive grinding, intelligent visual positioning, and portable robotic operation, the system enables rapid on-site repair of high-value industrial components with improved flexibility, precision, and automation. The dense metallurgical bonding produced by laser cladding technology provides excellent wear resistance, low dilution rate, and long-term service reliability for repaired parts.

Equipment Advantages

Modular portable structure allows fast assembly, transportation, and deployment in different industrial environments;
Intelligent visual positioning system supports automatic defect recognition, adaptive path generation, and precise repair positioning;
Hybrid additive and subtractive processing combines laser cladding restoration with precision grinding for higher repair quality and dimensional accuracy;
Adaptive cladding process control supports stable laser deposition in complex geometries and difficult repair areas;
High-precision laser repair system can achieve fine deposition accuracy and consistent metallurgical bonding quality;
Multiple teaching and programming modes support flexible operation for different repair scenarios and operator skill levels;
Intelligent repair path library improves processing efficiency for common industrial repair applications;
Force-controlled grinding system ensures stable surface finishing and accurate material removal after laser deposition;
Compact portable design is suitable for confined spaces, field repair operations, and large non-removable industrial components;
Ideal for turbine shafts, valve seats, hydraulic components, molds, rollers, drilling tools, heavy equipment parts, and other high-value metal components requiring rapid on-site restoration.

Model	G PortiLAM® 12R-300，PortiLAM® 10F-300，G PortiLAM® 12Rv-300
Laser	3000W / Fiber 200 μm / 20m
Laser Power	3000W
Motion Mechanism	Robot
Motion Type	Hand-Push
Repeat Positioning Accuracy	±0.04/0.03m
Vehicle Load	200KG
Usable Radius	1418mm/1434mm
Robot Payload	10/12kg
Nozzle Structure	Coaxial Ring
Powder Feeder	5L Single Powder Cylinder
Powder Feeding Rate	1~400g/min
Powder Feeding Error	±1%
Water Chiller	CWFL-3000AN
Laser Cladding Head	D52 Compact Version
Overall Machine Size	1140×685×1385mm
Spot Size	0.6mm~4mm

Equipment function display

Lightweight and portable

The equipment adopts a modular design. Each module has independent functions and can be disassembled and assembled according to different usage scenarios. The module is lightweight and can be easily deployed by 1-2 people at the work site. The robot is fixed by magnetic suction and can be installed upright, sideways, or upside down.

Drag-and-drop teaching experiment

The collaborative robot was introduced into the laser cladding industry for the first time. The drag-and-drop teaching function is combined with the cladding target: 20*20mm square. After cladding: the error is within 1mm. This method can quickly frame the cladding area and save teaching time.

Visual adaptive repair

3.1 Blade repair

Use the self-developed visual adaptive cladding system and process path library to carry out blade extension and local defect repair. The blade is accurately positioned, there is almost no light leakage at the edge, and the cladding effect is good.

3.2 Engine mold core insert

Use the self-developed visual adaptive cladding system and process path library to extend the size of the mold core insert. Accurate positioning, good molding effect, cladding height of 25mm without collapse.

3.3 Defect contour recognition

Select the detection target (triangle, rectangle, square, polygon, circle, ellipse), the system extracts features based on the current screen image and automatically generates the cladding path.

Additive and subtractive integrated function

Flip the tool head to switch between laser additive and force-controlled subtractive. Realize the integration of “drilling pre-processing – cladding processing – polishing post-processing” to simplify process switching time. Constant contact force control, good system stability.

Application Cases

Wind power equipment

Demand: Regular inspection and repair of mechanical shafts (bearings)

Pain points: The traditional repair method removes the rotor shaft from the cabin, which is expensive to use a high-altitude crane, and the entire processing cycle of hoisting + repair + reinstallation is long; the online repair method is used, and it is inconvenient to hoist large maintenance equipment due to the high working position.

Matching degree: high. The portable repair equipment has a compact structure, is easy to hoist, is convenient and quick to arrange, and has strong adaptability to online repair.

Hydropower Station

Demand: Repair of wear and deformation of hydropower unit seat ring; repair of cavitation in turbine runner chamber.

Pain point: The large-scale repair equipment on site for hydropower seat ring remains unchanged; the current repair method is mostly welding repair, which has a short life and leads to repeated surfacing.

Matching degree: high. The portable repair equipment has a compact structure, is easy to move, and the magnetic structure is easy to install and fix.

Rolling mill arch repair

Requirement: Repair the failed working surface of the arch

Pain points: The rolling mill frame is large in size and weight, with many auxiliary pipelines, etc., which makes disassembly, installation, and transportation complicated. In addition, there is a time limit for overhaul; the on-site working space is small, and large equipment cannot be moved.

Matching degree: high. The portable repair equipment has a compact structure, is easy to move, and the magnetic suction structure is easy to install and fix.

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