Explore our flagship catalog featuring portable laser repairs, micro plasma systems, and structural hardfacing machinery.
Flexible field restoration system designed for on-site mold and component cladding repairs with minimum heat input.
Industrial tungsten calibrator ensuring ultra-stable pilot arc ignition for continuous micro-plasma applications.
Robust 160A PTA torch engineered for high-alloy powder feeding cladding processes on heavy industrial valves.
Integrated multifunctional DML-V03AD series with advanced PLC controls for precision thin-wall cladding overlays.
High-integration DML-V03BD architecture combining gas mixer, cooling unit, and micro plasma source into one smart platform.
Automated cantilever-type workstation for uniform rotary or linear plasma transferred arc (PTA) cladding procedures.
Ultra-efficient 3000W hand-held laser cladding unit for repair services requiring rapid metallurgy bonding.
Ultra-precise current control welder operating down to 0.1 Amps, ideal for bellows, thermocouple junctions, and electronics.
A comprehensive analysis of metallurgical processes, dilution rates, global production dynamics, and Chinese supply chain integration.
Micro Plasma Arc Welding (MPAW) represents the pinnacle of thermal arc concentration. Unlike conventional TIG (GTAW) welding, where the arc naturally diverges in a conical shape, the micro-plasma arc is mechanically and pneumatically constrained through a copper nozzle orifice. By forcing the shielding and plasma gas (typically Argon) through this narrow physical constraint, the energy density increases by orders of magnitude.
For applications requiring the welding of ultra-thin foils (ranging from 0.05mm to 1.5mm), traditional welding sources struggle to maintain arc stability below 5 Amps. Shanghai Duomu’s micro-plasma systems utilize specialized Tungsten Calibrators and digital inverter loops to stabilize a pilot arc, transitioning into a micro-welding arc controllable down to 0.1A. This prevents thermal burn-through, minimizes the heat-affected zone (HAZ), and ensures zero metallurgical degradation of the base alloy.
Globally, manufacturing is shifting from simple subtractive assembly to high-entropy surface cladding and remanufacturing. Modern turbines, oil drilling bits, screw conveyors, and industrial control valves are subjected to intense mechanical stress, high temperatures, and corrosive environments.
Industries in North America, Europe, and Asia no longer scrap expensive steel cores. Instead, they leverage Plasma Transferred Arc (PTA) cladding and laser cladding systems to deposit Stellite, Inconel, or Tungsten Carbides directly onto critical wear surfaces. This extends the service life of industrial machinery by 300% to 500%.
Figure 1: Shanghai Duomu's state-of-the-art PTA Cladding and automated positioning systems.
As a premier manufacturer and exporter of PTA cladding and laser cladding machinery for over a decade, Shanghai Duomu has built a fully vertically integrated supply chain in China. This structure allows us to overcome the common challenges faced by Western equipment buyers:
From designing custom 160A PTA torches to coding PLC-based multi-axis motion control, we reduce reliance on third-party automation vendors, translating to a 40% reduction in setup costs.
Proximity to major high-purity alloy powder and tungsten mineral producers guarantees cost stability, allowing us to supply durable torches and calibrators at competitive prices.
Our machines are engineered to CE standards, using major electrical components (Siemens PLC, Omron electronics) to ensure localized spare parts availability worldwide.
At present, Shanghai Duomu's products have penetrated into critical fields requiring extreme precision and wear resistance.
Deposition of high-impact tungsten carbide matrices on plowshares, harvester blades, and cultivation teeth. Increases abrasive wear life in sandy soils by up to 4x.
Thin-foil precision welding, sensor capsule sealing, and high-temp superalloy restoration for aerospace engines. Critical for parts requiring less than 0.5mm distortion tolerance.
Inconel 625 and Stellite 6 overlay cladding on drill collars, valves, and stabilizers to withstand sour gas corrosion, high hydrogen sulfide concentrations, and high pressures.
Large-scale rebuilding of roll neck surfaces, continuous casting mold plates, and heavy-duty stamping dies using high-deposition PTA cladding stations.
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 factory in Shanghai is equipped with modern calibration facilities and automated CNC testing units, ensuring that every machine leaving the assembly line performs with maximum consistency.
Our export footprint spans the Americas, Europe, Russia, Southeast Asia, and the Middle East. We specialize in providing not just off-the-shelf welding machines, but fully integrated turn-key robotic workstations designed to slot directly into your existing assembly lines.
Our dedicated technical department designs, produces, and sells high-stability plasma cladding equipment. Our welding machines maintain efficient long-term operations under harsh industrial conditions.
In addition, our high-power laser cladding equipment supports large-scale remanufacturing projects. We possess the process knowledge required to deliver comprehensive, turnkey industrial systems tailored to your technical specifications.
Whether you need a custom-built gantry, a multi-axis articulating robotic arm setup, or automated rotary tables, our engineers design and calibrate fixtures to ensure uniform cladding overlays on complex geometrical profiles.
Explore our specialized machines built for specific industrial geometries: hydraulic rods, valve seats, and rotor blades.
Designed for rapid, low-distortion powder deposit overlays on carbon steels and low-alloy backing plates.
All-in-one cabinet featuring built-in water chilling, PLC touch screen controls, and automated powder delivery.
Highly adaptable modular source configuration supporting both PTA hardfacing and precision micro GTAW processes.
Multi-axis laser restoration system optimized for high-temperature turbine blades and pump impellers.
Precision rotary welding lathe with automated PTA tracking, engineered for chemical ball valve seats.
Articulated robotic arm configured with high-intensity laser optics for surface phase transformation hardening.
Heavy-duty gantry lathe system designed to apply uniform anti-corrosion overlays along long hydraulic cylinders.
Insights from our engineering teams and international clients on overcoming extreme wear conditions using PTA overlays.
"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, gas, and power generation push pressures higher, the low dilution of Duomu's PTA machines ensures our valves retain chemical integrity."
"In mining and cement processing, screw conveyors are subject to severe abrasion. Maintenance data shows they are among the most frequent causes of unplanned downtime. By hardfacing our conveyor flights with Duomu's automated gantry PTA powder machine using tungsten carbide, we extended conveyor lifespans from 6 months to 2.5 years."
"In PTA hardfacing, achieving a high-quality overlay is not only about selecting the right alloy powder. One of the most critical factors is the dilution rate. Shanghai Duomu's closed-loop current control and synchronized powder feeder allow us to achieve dilution rates below 5%, conserving expensive cobalt alloys."
"For heavy offshore equipment, hardfacing is a critical technology related to equipment lifespan and downtime costs. Deploying Duomu's automated cantilever systems reduced our manual welding workload by 70%, with overlay profiles requiring minimal post-weld grinding."
"In oil and gas exploration, industrial valves are constantly exposed to high pressures, extreme temperatures, corrosive media, and abrasive wear. Implementing Duomu's automated rotary PTA cladding tables has helped us achieve API 6A cladding specifications consistently. Our rejects dropped to near-zero."
Technical guidance covering dilution optimization, materials compatibility, and commissioning support.
Explore our industrial-grade automated solutions, custom-configured torches, and robotic cladding systems.
High-efficiency linear platform designed for thin-walled cylinder production and longitudinal weld joints.
Multi-axis automated fiber laser system engineered for high-performance metallurgy layer deposition.
Large-format gantry laser system developed for repairing mining equipment and flat dies.
Micro-heat electro-discharge deposition machine designed for precision tool and die repair.
100A liquid-cooled PTA torch designed for continuous manual or semi-automated overlay cladding.
Robotic cell for automated laser heat treatment and selective surface hardening of complex parts.
Automated cladding system designed to apply corrosion-resistant overlays along hydraulic cylinders.
Compact CNC gantry workstation designed for high-density laser cladding of small components.
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