Engineered for high dilution-control cladding, severe erosion protection, and high-precision component remanufacturing.
Modern industrial procurement is undergoing a paradigm shift. Global operations teams across North America, Europe, and Asia-Pacific are actively phase-outing legacy, high-emission, toxic surface treatment methods—specifically hexavalent chrome electroplating—in favor of advanced sustainable laser technology and Plasma Transferred Arc (PTA) cladding.
The demand is driven by urgent corporate ESG initiatives and strict regulatory barriers such as REACH and EPA. Heavy machinery manufacturers, mining corporations, and energy firms require high-deposition cladding systems that minimize environmental impact, optimize resource efficiency, and maximize core component life cycles. Laser cladding and PTA technologies satisfy these mandates by providing highly precise metallurgical bonds with minimal substrate dilution.
Deploying specialized additive manufacturing across the world's most critical heavy sectors.
Superalloy cladding of gas turbine blades, engine components, and landing gear subsystems. Eliminates micro-cracks and maintains base structural integrity via rapid-cooling laser pulses.
Cladding valves, high-pressure pipes, and drilling equipment exposed to extreme hydrogen sulfide (H2S) and high-temp chloride environments. Employs PTA & Laser Cladding to weld corrosion-resistant alloys (CRA).
Extending the fatigue life of wear-intensive screw conveyors, pulverizer rolls, and continuous caster rollers. Highly integrated automation handles heavy deposits with zero structural deformation.
Shanghai Duomu features an independent R&D team focusing on the optimization of high-density heat source cladding processes. Our proprietary technologies solve the core dilemma of hardfacing: achieving high deposition efficiency while keeping the dilution rate under 5%.
Whether implementing multi-axis robotic laser cladding platforms or high-current plasma powder welding units, our control systems deliver uniform energy distribution. This results in ultra-fine grain structures inside the cladding layer, enhancing toughness and corrosion resistance compared to traditional arc welding.
| Technology Profile | Bond Quality | Heat Affected Zone (HAZ) | Dilution Rate | Optimal Layer Thickness | Primary Industrial Use Case |
|---|---|---|---|---|---|
| Laser Cladding | Metallurgical (High strength) | Minimal (< 0.5 mm) | 1% - 3% | 0.5 mm - 2.5 mm | Turbine blades, high-precision shafts, hydraulic rods |
| PTA Hardfacing | Metallurgical (Extreme strength) | Moderate (1 - 2 mm) | 3% - 8% | 2 mm - 6 mm | Extruder screws, mining teeth, large valve seats |
| Thermal Spraying | Mechanical (Friction / adhesion) | None | 0% | 0.1 mm - 0.5 mm | Temporary wear coatings, low-impact barriers |
Explore where our advanced surface technologies are deployed daily around the globe.
Shanghai Duomu has been a leading manufacturer and exporter of PTA cladding machines and Laser cladding machines for more than ten years with a strong technical background. Our dedication to design and thermal spray technology has earned us a global reputation for durability and operational efficiency.
We can provide customized equipment, automatic laser cladding equipment, automatic plasma cladding equipment, intelligent robot cladding equipment, etc. according to customers' requirements, including special equipment in the industry, such as hydraulic rod cladding machines, pick cladding machines, valve cladding machines, and more.
In-depth technical papers and customer experiences illustrating structural lifecycle extensions.
"The PTA Welding Valve Application Guide is not just a process choice for valve manufacturers facing high wear, high corrosion, and high-temperature erosion working conditions, but also a key path to improving product competitiveness. As industries such as petrochemical, power generation, and subsea mining progress, PTA remains irreplaceable."
"In industries such as mining, cement, power generation, steelmaking, chemical processing, and biomass energy, screw conveyors are often regarded as auxiliary equipment. However, maintenance data shows that they are among the most frequent causes of unplanned production downtime. Laser cladding resolved this completely."
"In Plasma Transferred Arc (PTA) hardfacing, achieving a high-quality overlay is not only about selecting the right alloy powder or optimizing welding parameters. One of the most critical factors that directly affects overlay performance is the dilution rate. Whether you need minimal dilution or a custom gradient transition, Duomu machines provide the control."
"In industries such as Oil & Gas, Mining, Power Generation, Cement, and Heavy Equipment Manufacturing, hardfacing is no longer just a repair process. It has become a critical technology directly related to equipment lifespan, downtime costs, maintenance frequency, and carbon emissions reduction. Working with Shanghai Duomu’s custom systems allowed us to overhaul our remanufacturing segment, decreasing production downtime by 35% across our processing sites."
"Industrial valves are constantly exposed to severe operating conditions including: High pressure, Extreme temperatures, Corrosive media, Abrasive wear, and Sand erosion. Using the Duomu automated PTA cladding system, we have built valve seats that withstand 5000+ cycle stresses in corrosive seawater."
A B2B perspective on structural sustainability, energy transition, and automated cladding technology.
The traditional "extract-make-dispose" model is no longer viable. In its place, the circular economy focuses on extending the operational lifespan of industrial machinery. Here, laser cladding stands out as a critical tool. Rather than scrapping worn turbine blades, extrusion shafts, or hydraulic cylinders, manufacturers can restore them to original dimensions—often with superior wear and corrosion resistance compared to the base material.
Compared to manufacturing a new steel shaft, laser remanufacturing saves up to 85% of the raw material weight and reduces carbon emissions by 60-70%. It represents a massive cost-benefit advantage for heavy industries under carbon trading schemes and clean-tech mandates.
Our R&D roadmap focuses on:
Shanghai Duomu understands the operational constraints of global enterprise procurement. We adhere to rigorous compliance standards, ensuring all exported equipment meets the technical and safety regulations of destination markets.
CE Certification: Fully certified systems for European economic zones.
ISO 9001:2015: Total quality management systems applied from sourcing raw electronic components to final assembly testing.
Global Support Network: Partnered service centers in North America, Northern Europe, and Southeast Asia ensure timely on-site commissioning, operator training, and localized consumable supply chains.
Providing technical answers to help guide your sourcing and engineering decisions.
Reliable automated technology for internal cladding, tool repairs, and complex surface modifications.
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