Explore our top-tier catalog of precision-engineered plasma arc welding machines, specialized torches, and wear-resistant accessories, designed for seamless industrial system integration.
How high-current Plasma Transferred Arc cladding mitigates structural wear and optimizes dilution management.
The Plasma 160 Transferred Arc (PTA) system represents the peak of thermal overlay technology for extreme mechanical wear environments. Operating at up to 160 Amps, this technology delivers a highly concentrated plasma arc focused via a specialized, water-cooled copper nozzle. Unlike standard GTAW/TIG processes, PTA utilizes a secondary "pilot" arc to initiate a main transferred arc between the tungsten electrode and the workpiece, maximizing heat density while restricting overall thermal exposure.
One of the critical parameters in protective overlay application is the dilution rate—the percentage of base metal that mixes into the deposited hardfacing layer. The Plasma 160 PTA process maintains dilution rates under 5% (and frequently down to 2-3%), far outperforming traditional SMAW or MIG methods where dilution can exceed 15-25%. Minimal dilution ensures that the alloy powders (such as tungsten carbide matrixes or cobalt-based alloys) maintain their native wear-resistant chemistries from the very first layer.
By pairing precision powder-feed control with specialized gas dynamics (using ultra-pure argon as shielding, carrier, and plasma gases), the Plasma 160 PTA system achieves a high deposition efficiency. This limits metallurgical distortions, reduces the width of the Heat Affected Zone (HAZ), and guarantees that critical components in severe wear industries survive up to 10 times longer.
Our PTA cladding and laser surfacing systems are deployed across mission-critical, harsh-environment industries worldwide.
Shielding plowshares, seed boots, harvester teeth, and tillage discs against continuous abrasive soil wear. Extending seasonal lifetimes significantly.
Cladding and hardfacing critical components, high-wear control flaps, turbine blade seals, and military vehicle parts utilizing exotic superalloys.
Protecting stabilizer bands, mud pump rotors, drill collars, and downhole tools against high-velocity sand erosion and corrosive gas well conditions.
Re-engineering contact guides, rolling mill shafts, and extrusion screws that suffer severe thermal shock and metal-on-metal friction.
How Shanghai Duomu is shaping the next generation of industrial cladding and automated hardfacing solutions.
Developing closed-loop optical feedback sensors that monitor powder flow rates and arc stability in real time, adjust feed speeds dynamically to prevent uneven claddings, and reduce scrap rates to near zero.
Unifying the deposition speeds of 160A Transferred Arc systems with the low-distortion properties of laser cladding into a singular, hybrid machine head. Enabling customizable, layered metallurgical alloy zones.
Integrating machine-learning models into control units. Operators only input base metal composition and target wear metrics; the Plasma 160 automatically calibrates gas flow, voltage, current, and torch velocity.
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 research, quality control, and robust assembly systems has allowed us to deliver hundreds of advanced cladding stations to major industrial markets globally.
Based in Jiading District, Shanghai, we operate an independent, state-of-the-art R&D facility. Our engineering teams specialize in customizing torches, configuring automated multi-axis gantry robots, and developing specialized powder feed systems. This vertical integration allows us to respond to customer custom demands with speed, agility, and precision.
How our localized ecosystem in Shanghai translates directly to cost containment, customization speed, and delivery reliability.
Operating adjacent to specialized metallurgical zones in East China gives Duomu access to high-purity copper alloys and high-density tungsten stock. This minimizes feedstock costs for torches and consumables.
Located in Jiading, Shanghai, we leverage the world's most active cargo ports and international air terminals. We guarantee that emergency spares reach facilities in North America, Europe, or SEA rapidly.
We do not outsource critical component manufacture. Custom DNPT160 or DNPT500 torches are machined, water-tested, and quality-vetted entirely on-site. Ensuring structural consistency and lower failure rates.
I have an independent R&D team, which develops, produces and sells plasma cladding machine equipment. The welding machine has stable performance and can maintain efficient long-term operation. In addition, the laser cladding equipment sold by the company can effectively support large-scale remanufacturing projects.
Our engineering division maintains precise control over electrical and gas systems, programming PLC algorithms to support automated industrial processes. This expertise translates into highly reliable cladding machines that operate 24/7 without arc drift or powder blockage.
We provide customized equipment, automatic laser cladding equipment, automatic plasma cladding equipment, and intelligent robot cladding systems tailored to challenging engineering tasks.
Read our in-depth analyses on dilution rate effects, down-time economics, and structural rebuilding strategies.
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 ...
Read Article
Introduction Improving PTA hardfacing efficiency is not simply about increasing welding speed or depositing more alloy within a shorter time. In industrial production, the real efficiency of a Plasma Transferred Arc (PTA) hardfacing process dep...
Read Article
In Oil & Gas, the Real Cost Is Downtime—Not the Component When a choke valve fails due to sand erosion, a mud pump valve seat wears beyond tolerance, or a drill stabilizer reaches the end of its service life, the traditional respon...
Read Article
For industrial equipment operating in abrasive, erosive, corrosive, or high-temperature environments, wear is inevitable. The real challenge is not preventing wear altogether but choosing the most cost-effective maintenance strategy once wear occurs. Many maintenance tea...
Read Article
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 d...
Read ArticleGet professional insights straight from our metallurgy and custom PTA torch engineers.
While laser cladding offers a smaller Heat Affected Zone (HAZ) and minimal dilution, the Plasma 160 PTA system yields significantly higher deposition rates (often 2-5 kg/h depending on target parameters). PTA remains the standard for thick, heavy-duty wear overlays on large industrial surfaces where cycle times and deposition thickness are the primary metrics.
Yes. As a primary manufacturer, Shanghai Duomu specializes in customizing torch dimensions (such as our DNPT160 and DNPT500 series). We can customize internal cladding torches for bores with internal diameters down to 50mm, including integrated cooling water loops and dual-port powder delivery lines.
Tungsten calibrators are vital for ensuring exact electrode concentricity and extension. In automated PTA systems, even a 0.2mm deviation in electrode alignment can cause arc drift, uneven powder melting, or high nozzle dilution. Consistent calibrator use ensures stable welding arcs across long shifts.
All our plasma power sources, integrated robots, and gantry units conform to global industrial standards. Our production facilities maintain ISO 9001 certifications, and all export electrical cabinets are wired and configured to match localized industrial requirements (CE, UL, CSA, etc.) upon request.
For inquiries about our products or pricelist, please leave your details below, and we will be in touch within 24 hours.
Ready to upgrade your surface engineering technology?
SubscribeComplete your automated line with our robust CNC-gantry interfaces, high-grade tungsten calibrators, and automatic cladding robots.
