Custom Plasma Spray Welding Manufacturer & Manufacturers

Industrial Surface Engineering and Automated PTA & Laser Cladding Systems for Wear, Corrosion, and Heat Resistance Globally

Featured Custom Machinery

Precision Hardfacing & Surfacing Solutions

Explore our premium grade customized automatic cladding systems and components engineered for industrial excellence.

Custom DH6-LC501-B06 Automatic cladding system of screw brick machine

Custom DH6-LC501-B06 Automatic Cladding System of Screw Brick Machine

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Custom integrated multifunctional plasma powder welding machine (dml-v03ad)

Custom Integrated Multifunctional Plasma Powder Welding Machine (DML-V03AD)

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Custom Cutting picks automatic laser cladding equipment DJC-LC305

Custom Cutting Picks Automatic Laser Cladding Equipment DJC-LC305

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China DH1440-B06 Automatic plasma surfacing robot

China DH1440-B06 Automatic Plasma Surfacing Robot

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China Laser cladding equipment for hydraulic rod

China Laser Cladding Equipment for Hydraulic Rod

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High-Quality Independently Research And Develop Plasma Surfacing Torch 300

High-Quality Independently Research And Develop Plasma Surfacing Torch 300

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China Strong practicality and heat-resistant tungsten electrode

China Strong Practicality and Heat-Resistant Tungsten Electrode

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China Laser hardening robot

China Laser Hardening Robot

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Technical Depth

Understanding Custom Plasma Spray Welding and PTA Cladding Technology

In modern high-stress industrial environments, component wear, abrasion, and corrosion represent some of the most significant sources of unplanned machinery downtime and replacement costs. As a premier Custom Plasma Spray Welding Manufacturer, we leverage Plasma Transferred Arc (PTA) cladding and advanced laser surfacing systems to engineer protective coatings that dramatically extend the operational lifecycle of critical machinery parts.

The Physics of Plasma Transferred Arc (PTA) Hardfacing

Unlike conventional welding methods that merely melt a filler wire onto the substrate, PTA (Plasma Transferred Arc) cladding utilizes a constricted, high-density plasma arc as a heat source. This process melts both the surface of the base metal and the injected alloy powder (such as stellite, nickel-base alloys, or tungsten carbide composites). The results include:

  • Low Dilution Rate: The dilution rate is kept between 3% and 8%, ensuring that the deposited alloy layer maintains its high-performance characteristics without contamination from the substrate.
  • Metallurgical Fusion: Unlike mechanical spray processes, PTA creates a true metallurgical bond, preventing delamination or flaking even under extreme shear loads.
  • Narrow Heat-Affected Zone (HAZ): High energy density keeps the thermal footprint minimal, preventing structural distortion of the parent material.

By customizing these systems for industries like valve manufacturing, petroleum machinery, and mining picks, we ensure that operators achieve maximum surface density and wear protection tailored to their exact chemical and mechanical needs.

Shanghai Duomu Advanced PTA and Laser Cladding Factory View
10+
Years of R&D Excellence
150+
Industrial Units Shipped
<5%
Average Cladding Dilution
100%
Quality Assurance Testing
Shanghai Duomu Technical R&D Department - Automated Systems
About Shanghai Duomu

A Decade of Pioneering PTA & Laser Cladding Technology

Shanghai Duomu has been a leading manufacturer and exporter of PTA cladding machines and laser cladding systems for more than ten years. Backed by a strong technical background and our independent R&D team, we develop, produce, and sell highly stable plasma cladding systems. Our engineering principles emphasize thermal optimization, digital PLC parameter control, and robust mechanical structures designed for round-the-clock industrial usage.

The R&D and Technical Department Edge

Our dedicated technical department is equipped to engineer custom systems for large-scale remanufacturing projects. The welding machines we manufacture feature stable, highly repeatable performance capable of maintaining efficient long-term operations. We offer complete industrial system solutions, from multi-axis robotic integration to custom-configured powder feeders and multi-bore torches, ensuring our global clients receive specialized turn-key installations.

Custom Capabilities

Tailored Hardfacing Architecture

We configure system components to meet specific industrial environments, ensuring optimal metallurgic performance.

Automated Robotic Integration

6-axis articulating arm units coupled with custom planar positioning tables. Ideal for intricate geometries such as turbine blades, valves, and mining drill bits.

Advanced Powder Feeders

Precision gas-carrier powder feeders with dual-chamber designs to ensure a steady, anti-clogging flow of tungsten carbide or stellite alloys during long surfacing runs.

Independently Developed Torches

Our internal research led to torches optimized for deep internal bores, flat surfacing, and double-gantry systems. They run cooler, minimizing wear-part replacement.

Global Applications

Diverse Industrial Integration

Our PTA cladding and laser hardening systems are optimized for critical wear parts across major global industries.

Agricultural Machinery wear protection

Agricultural Machinery

Soil-engaging tools, tillers, and blades requiring ultra-hard tungsten carbide layers to withstand abrasive soil conditions.

Aerospace and Military PTA applications

Aerospace & Military

High-precision components requiring tight tolerance, minimal distortion, and high-temperature oxidation protection.

Petroleum Machinery drill bits and valves

Petroleum Machinery

Drilling stabilizers, mud motor rotors, and high-pressure gates and seats subject to slurry erosion and corrosive oils.

Metallurgy and Casting wear lining

Metallurgy & Casting

Continuous casting rolls and hot-shear blades subjected to cyclic thermal stress and heavy metal-on-metal friction.

Supply Chain Efficiency

China Factory Supply Chain & Purchasing Advantages

Sourcing your surface engineering equipment from our manufacturing facility in Shanghai offers unmatched financial, technical, and operational advantages. By integrating raw material sourcing, automated machining, and software customization under a single roof, we pass substantial cost efficiencies down to our global clients.

Why Leading Enterprises Partner with Us:

  • Direct Material Sourcing: Direct partnerships with top-tier alloy powder and tungsten manufacturers guarantee consistent consumable quality at factory-direct pricing.
  • Complete Control Over Assembly: We manufacture core elements (the plasma power supply, the PLC controllers, and the specialized torches) in-house. This guarantees long-term parts availability and seamless mechanical integration.
  • Logistical Hub Position: Located in Shanghai, we leverage world-class shipping hubs, ensuring quick transport, customs compliance, and streamlined international shipping routes.

Compliance, Standards, and Localized Integration Support

We recognize that global procurement demands rigorous alignment with local regulations. Our plasma spray welding and cladding equipment complies with crucial international directives:

  • CE Certification: Fully compliant with European health, safety, and environmental protection standards.
  • ASME IX & ISO 15614-7 alignment: Our systems are engineered to facilitate the qualification of welding procedures matching ASME Sec IX and ISO standards for overlay and cladding.
  • Localized Software and Safety Controls: Control systems can be pre-configured with multi-language interfaces (English, Spanish, German, etc.) and integrated with standard safety circuits like dual-channel E-stops, light curtains, and robotic interlocks.
Industrial Product Catalog

Specialized Industry Machinery Showcase

High-resolution look at our custom-configured laser and plasma cladding hardware solutions built to spec.

plasma powder surfacing machine DML-V03CD

Plasma Powder Surfacing Machine DML-V03CD

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integrated multifunctional plasma powder welding machine

Integrated Multifunctional Plasma Powder Welding Machine

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multifunctional plasma powder welding machine

Multifunctional Plasma Powder Welding Machine

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Laser cladding machine for blades

Laser Cladding Machine for Turbine Blades

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Ball Valve Automated Welding Equipment DQF-LC602

Ball Valve Automated Welding Equipment DQF-LC602

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Laser hardening robot

Automated Laser Hardening Robot System

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DYY-LC501 Hydraulic rod automatic plasma cladding system

DYY-LC501 Hydraulic Rod Automatic Plasma Cladding

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Industrial Feedback

Application Insights & Client Case Studies

See how our PTA welding and cladding technology functions in the field to optimize performance and slash downtime.

"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 and water power demand tighter safety margins, using Duomu's PTA systems has allowed us to hit 0% failure rates on our ball valve overlays."

PTA Valve Application avatar

Valve Manufacturing Group

Petrochemical Components Division

"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. Integrating the DH6-LC501-B06 automatic cladding system saved us over $120,000 in annual maintenance."

Screw Conveyor Wear avatar

Cement & Bulk Logistics Corp

Operations Manager

"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. Controlling dilution determines whether the alloy preserves its wear resistance properties on the surface."

PTA Hardfacing Dilution avatar

Advanced Metallurgy Lab

Senior Materials Scientist

"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 process throughput under aggressive environmental duress."

Heavy Equipment repair avatar

Global Heavy Industries Ltd

Surface Integrity Specialist

"In industries such as oil & gas, petrochemical, power generation, mining, and marine engineering, industrial valves are constantly exposed to severe operating conditions including high pressure, extreme temperatures, corrosive media, abrasive wear, and sand erosion. The customized PTA overlays from Shanghai Duomu resist these elements flawlessly."

Industrial valve conditions avatar

Oceanic & Marine Valves Inc

Lead Quality Engineer

Expert Knowledge

Frequently Asked Technical Questions

Get professional insights on PTA technology, dilution rates, customization, and deployment configurations.

What is the core benefit of PTA surfacing compared to standard thermal spray processes?
Unlike traditional thermal spraying which relies primarily on mechanical bonding (adhesion), PTA (Plasma Transferred Arc) welding creates a true metallurgical bond with the parent metal. This prevents delamination, spalling, and cracking under intense mechanical shear, impact, or high thermal cycling, making it ideal for severe duty applications.
How does Shanghai Duomu maintain dilution control in automated cladding?
Dilution control is managed via our precision PLC-monitored welding parameters. By controlling the pilot arc current, the powder feed rate, travel speed, and gas shielding pressure, we limit the penetration into the base metal. This ensures the hardfacing layer retains its alloying composition (like Stellite or Tungsten Carbide) with dilution rates of less than 5% in a single pass.
Can your systems handle tungsten carbide (WC) powder blends?
Yes, our specialized PTA and laser cladding systems, coupled with our proprietary gas-carrier powder feeders, are designed to deposit nickel-based or cobalt-based matrices containing spherical or cast tungsten carbide particles. Our precise temperature control ensures the carbide particles remain intact without excessive dissolution into the matrix.
What options do you offer for internal bore cladding?
We manufacture custom internal bore torches, such as the China Plasma Bore Welding Torch DNPT30018-HQ, which are engineered for deep, narrow-diameter internal cylinder surfaces. These units feature integrated water cooling and specialized powder delivery mechanisms for stable performance in tight physical environments.
How is global technical support managed post-purchase?
We provide complete global integration services. This includes comprehensive remote diagnostic support via internet-connected PLC modules, on-site commissioning by our field engineers, and complete video manuals. Spare parts are dispatched promptly from our Shanghai factory hub to prevent downtime.
Industrial Components & Torches

System Core Parts and Advanced Hardfacing Equipment

Examine our secondary product line featuring heavy-duty gantry systems, bore torches, and precision powder feeders.

China Plasma Bore Welding Torch DNPT30018-HQ

China Plasma Bore Welding Torch DNPT30018-HQ

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High-Quality DLM-LC501 Double column gantry welding system

High-Quality DLM-LC501 Double Column Gantry Welding System

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High-Quality HRWS Precision Repair Welding Machine

High-Quality HRWS Precision Repair Welding Machine

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Custom Ball Valve Automated Welding Equipment DQF-LC602

Custom Ball Valve Automated Welding Equipment DQF-LC602

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High-Quality Powder feeder for PTAW & Laser Cladding

High-Quality Powder Feeder for PTAW & Laser Cladding

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Custom Laser cladding machine for blades

Custom Laser Cladding Machine for Turbine Blades

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High-Quality DNC2000 Planar plasma surfacing system

High-Quality DNC2000 Planar Plasma Surfacing System

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China plasma powder surfacing machine DML-V03CD

China Plasma Powder Surfacing Machine DML-V03CD

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Ready to Optimize Your Components' Lifespan?

For inquiries about our products, customized parameters, or complete industrial hardfacing solutions, please contact us. Our engineering team will respond within 24 hours.

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