The Annular Beam DED Head for Internal Cylindrical Cladding is a high-speed directed energy deposition head with a reflective optical design, engineered for internal bore laser cladding on cylindrical components with internal diameters of 180 mm and above. Its annular powder-feeding system delivers powder evenly toward the processing zone, while an optional off-axis wire-feeding module supports wire-based deposition for applications requiring different feedstock forms.
The rotationally symmetric beam profile provides uniform energy distribution, and powder utilization reaches at least 90%, helping reduce alloy waste while maintaining stable and repeatable deposition. Designed for internal diameter (ID) laser cladding on large-bore and complex-shaped components, the head produces smooth, low-distortion cladding layers with consistent coverage.
Compatible with stainless steels and hot-work tool steels, it is suitable for surface reinforcement, wear protection, dimensional restoration, localized repair, and remanufacturing. For OEMs, repair centers, and system integrators seeking an annular beam laser cladding head for internal bores of 180 mm and above, it provides a flexible powder-fed or wire-fed DED solution for internal surface repair and remanufacturing under demanding service conditions.
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| Beam Quality | Process Monitoring | Material Compatibility | |||
Optimized optical design provides stable beam delivery and uniform energy distribution. The beam profile and spot size are matched to the head design and target application. | Optional monitoring functions can include lens temperature monitoring, molten pool observation, process temperature sensing, and real-time process feedback to improve operating stability and process consistency. | Compatible with a wide range of metallic materials, including iron-based, nickel-based, cobalt-based, copper-based, and titanium alloys, depending on the head setup, laser parameters, and feeding method. | |||
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| Modular Design | Thermal Management & Protection | Industrial Integration | |||
The optical system, cooling structure, monitoring components, and material delivery modules are designed for convenient assembly, maintenance, and replacement. Modular construction also makes customized configurations easier for different industrial applications. | Efficient water cooling helps maintain stable operating temperatures during continuous processing. Protective design features can include dust resistance, spatter protection, sealing structures, and optional thermal monitoring for reliable operation. | Designed for CNC machines, robots, positioners, and automated laser systems. Optical interfaces, working distance, beam setup, and material feeding can be tailored for the application. |
Model | Performance Parameters |
Power Options | 6 kW/12 kW |
Fiber Interface | LOE |
Spot Size | ~ Φ6.5 |
Outer Dimension(mm) | 340×150×75 |
Machinable Inner Hole Diameter(mm) | Φ180 |
Operating Wavelength(nm) | 1080 |
Cooling Type | Water cooling |
Water Quality Requirements | Pure water |
Internal pipe cladding
Valve bodies
Pump housings
Pressure vessels
Corrosion-resistant inner walls
Uniform 360° deposition
Q1: What is the minimum internal diameter required for using this annular beam DED head?
A1: This internal cladding head is specifically designed for internal surfaces with a minimum diameter of 180 mm (≈7 inches). The annular beam
design provides uniform energy distribution around the circumference, making it ideal for refurbishing hydraulic cylinder barrels, pipe
interiors, and mining bore components. For diameters smaller than 180 mm, please contact our team to discuss alternative solutions.
Q2: Will internal cladding cause distortion or heat damage to my cylindrical component?
A2: No. The annular beam design delivers uniform energy distribution with optimized heat input control, producing low-distortion and smooth
cladding layers even on thin-walled cylinders. Combined with high-efficiency water cooling and real-time temperature monitoring, this head
minimizes thermal stress — critical for maintaining dimensional tolerances on high-value components like hydraulic pistons, mill rolls, and
drive shafts.
