Bore Laser Cladding Equipment
HALDEN bore laser cladding equipment offers high integration, high precision, and high adaptability, making it suitable for efficient and high-quality laser processing of the inner surfaces of different types of parts. It is designed to overcome the limitations of traditional internal repair processes and support better coating quality with lower heat input.
With strong accessibility for restricted internal spaces and compatibility with ultra-high-speed laser cladding technology, the system can complete high-speed cladding processing of cylinders, columns, and other internal bore components requiring dimensional restoration and surface protection.
- High integration, high precision, and high adaptability
- Longest welding depth up to 2 m
- Minimum internal diameter: Φ120 mm
- Coating thickness: 0.30–0.65 mm
- Efficiency: 0.5 m²/h
- Cladding layer hardness after grinding: about 50–53 HRC
High-Quality Internal Surface Laser Processing
Bore laser cladding equipment is intended for the internal laser processing of cylinders, columns, sleeves, and other parts with inner surfaces that require dimensional repair, corrosion protection, or wear resistance enhancement. Its integrated design helps achieve high-quality coating results in areas that are difficult to access using conventional optical heads.
The equipment supports precise internal bore processing while maintaining good coating continuity, stable deposition, and lower thermal influence on the base material.
Practical Alternative to Traditional Repair Processes
Traditional inner wall repair processes for hydraulic cylinders often use arc welding or CMT cold welding with copper alloy and a small amount of stainless steel. While these methods can form thicker coatings, they also introduce more heat, more material waste, and greater deformation.
HALDEN bore laser cladding provides a thinner and more controlled coating solution that better matches modern part protection requirements.
Comparison of Advantages of Bore Cladding
Laser bore cladding reduces heat input, lowers dilution, and saves material compared with traditional internal repair methods.
Traditional Processes
Traditional processes such as TIG welding, plasma surfacing, or arc cladding can produce coatings with thicknesses around 2–3 mm. However, these layers are often too thick, waste too much raw material, create larger heat-affected zones, produce deeper melting, and result in higher dilution and more deformation.
These effects also increase machining allowance and may negatively affect tissue changes and overall repair quality.
Laser Bore Cladding
Laser material cladding allows thinner coatings in the 0.5–1 mm range, significantly reducing heat input compared with traditional repair methods. A single coating can meet protection requirements while minimizing distortion and improving metallurgical quality.
This helps reduce waste, improve process control, and better preserve the dimensional integrity of the part.
Bore Laser Cladding Advantages
Designed for lower heat input, better coating quality, and broad material adaptability.
Small Heat Input
Concentrated heat input and a small heat-affected zone help avoid major tissue changes in the base material.
Flat Weld Surface
The cladding layer has a flat weld surface with low machining addition, reducing follow-up finishing effort.
Low Dilution and Good Corrosion Resistance
Shallow melting depth and low dilution of the melting layer help maintain good anti-corrosion performance.
Wide Material Compatibility
Suitable for a variety of materials, helping users reduce process cost while maintaining application flexibility.
High Integration and Precision
The equipment features high integration and high precision, supporting stable internal laser processing quality.
Strong Accessibility
It can solve the internal laser processing challenges of long, thin diameter parts and complex components in restricted positions.
Bore Laser Cladding Head
Designed for deep internal welding access and stable bore processing capability.
| Maximum Welding Depth | Up to 2 m |
|---|---|
| Minimum Internal Diameter | Φ120 mm |
| Application Capability | Suitable for long and thin diameter parts and complex components in restricted internal positions |
| Process Compatibility | Can complete high-speed cladding processing of cylinders, columns, and similar products |
Welding Parameters Table
Main operating parameters for HALDEN bore laser cladding equipment.
| Power | 500–4000 W |
|---|---|
| Powder Size | 25–150 μm |
| Powder Feeding Capacity | 0.1–200 g/min |
| Rotation Speed | 0–150 RPM |
| Coating Thickness | 0.30–0.65 mm |
| Efficiency | 0.5 m²/h |
Bore Cladding Test Results
Validation results show stable layer quality, sound bonding, corrosion resistance, and good hardness performance.
Surface Quality and Penetration Testing
The inner wall of the cylinder sleeve was laser clad with a one-side cladding thickness of 0.3–0.6 mm. The surface of the clad layer was continuous and uniform, with no visible air hole defects.
Penetration testing of the inner hole cladding layer showed no crack defects.
Metallography and Corrosion Resistance
Metallurgical microscope observation confirmed metallurgical bonding between the clad layer and the base material, with good internal quality of the clad layer.
After grinding, the clad layer thickness was kept at about 0.15 mm, surface roughness reached Ra0.8, and after 100 hours of neutral salt spray testing according to GB/T10125-1997, no rust spot was observed on the clad layer surface.
Grinding and Surface Finish
The molten clad part was ground while maintaining a clad layer thickness of about 0.15 mm. After grinding, the surface roughness reached Ra0.8, showing suitability for finishing-sensitive internal surface applications.
Hardness Test
A portable hardness tester was used to measure the cladding layer hardness after grinding. Six points were taken evenly along the circumference of the experimental tube, and the hardness ranged from about 50 to 53 HRC.
FAQ
Common questions about HALDEN bore laser cladding equipment.
1. What is the minimum bore diameter this equipment can handle?
The smallest internal diameter is Φ120 mm.
2. What is the maximum internal welding depth?
The longest welding depth can reach up to 2 meters.
3. How thick is the cladding layer in typical bore cladding applications?
The coating thickness is typically in the 0.30–0.65 mm range, while one-side cylinder sleeve cladding in the test was 0.3–0.6 mm.
4. What hardness can the clad layer achieve after grinding?
After grinding, the hardness of the molten cladding layer ranged from about 50 to 53 HRC.
Request a Quote for Bore Laser Cladding Equipment
If you need bore laser cladding equipment for cylinder sleeves, hydraulic cylinders, inner hole repair, or deep internal surface restoration, send us your bore diameter, processing depth, coating thickness requirement, and material condition. HALDEN can recommend a suitable bore cladding solution for your project.
- WUXI HALDEN INTERNATIONAL CO., LTD
- Mobile: +8618652469606
- Email: haldenwuxi@163.com
- Products: Bore Laser Cladding Equipment / Internal Bore Cladding / Cylinder Sleeve Laser Repair
- Support: Internal Head Matching / Process Development / Deep Bore Cladding Solutions
