Plasma Transferred Arc (PTA) coating has emerged as a cornerstone of modern surface engineering. As industries globally face increasing pressure to enhance component longevity and reduce operational downtime, the demand for high-performance hardfacing solutions has reached an all-time high. PTA technology offers a unique metallurgical bond with low dilution rates, making it superior to traditional thermal spraying or arc welding for severe wear applications.
From the oil sands of Canada to the deep mines of Australia, PTA coating is the preferred method for protecting critical assets against abrasion, corrosion, and high-temperature oxidation. As a leading China PTA coating supplier, Shanghai Duomu leverages over a decade of R&D to bridge the gap between high-end performance and cost-effective industrial scalability.
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China's industrial ecosystem allows for rapid prototyping and mass production. Our factory integrates the entire supply chain—from high-precision plasma torches to automated CNC cladding platforms—ensuring shorter lead times for global procurement.
Unlike standard equipment resellers, Shanghai Duomu maintains an independent R&D team. We don't just sell machines; we develop "process-integrated" solutions tailored to specific metallurgical requirements like Tungsten Carbide (WC) distribution and Nickel-based alloy optimization.
By optimizing the manufacturing process and utilizing economies of scale, we provide PTA coating equipment that meets European and American quality standards at a significantly more accessible price point, maximizing your ROI.
At present, the company's products have penetrated into many fields such as aerospace military industry, nuclear power, petrochemical industry, coal mines, metallurgy and forging, agriculture, water conservancy and electric power, etc.
Enhancing the wear resistance of plowshares and harvesters operating in abrasive soils.
Precision cladding for turbine blades and high-stress landing gear components.
Hardfacing drill stabilizers and valve seats for high-pressure subsea environments.
Protecting continuous casting rollers and forge dies from thermal fatigue and wear.
As a professional manufacturer and exporter, Shanghai Duomu emphasizes the "Dilution Rate Control". In PTA hardfacing, the goal is to deposit a high-hardness alloy layer while minimizing the melting of the base metal. Our advanced DML-series machines achieve a dilution rate as low as 5%, ensuring that the surface properties of the coating are not compromised by the substrate chemistry.
The integration of PTA and Laser Cladding into a single workstation is becoming the standard for high-efficiency remanufacturing. PTA handles large-volume buildup, while laser cladding provides precision finishing.
AI-driven sensors now monitor weld pool dynamics in real-time, adjusting parameters (current, speed, feed rate) to prevent defects before they occur.
Global enterprises are moving from "Replace" to "Repair". Remanufacturing worn shafts, valves, and rollers using PTA coating reduces carbon footprints by up to 80% compared to manufacturing new parts.
Learn from our field experiences and technical whitepapers.
The Critical Impact of Dilution Rate on PTA Hardfacing Performance
In PTA hardfacing, achieving a high-quality overlay is not only about selecting the right alloy powder...
Improving PTA Efficiency: Beyond Welding Speed
Industrial production efficiency depends on the reliability of the system and the duty cycle of the torches...
Oil & Gas: Reducing the Real Cost of Downtime
When a choke valve fails, the cost isn't the part; it's the lost production time. See how PTA saves millions...
PTA uses a plasma arc as the heat source, offering higher deposition rates and better bond strength for thick coatings (2-6mm). Laser cladding uses a concentrated light beam, resulting in a smaller heat-affected zone and superior precision for thin coatings (0.5-2mm).
Yes. We specialize in integrated systems, including CNC-controlled positioning, robotic integration, and customized torches for specific geometries like inner bore cladding or ball valve surfacing.
Every machine undergoes a 48-hour continuous operation test and metallurgical inspection of test samples before shipping. We provide full technical documentation and remote video support for commissioning.
Most iron-based, cobalt-based (Stellite), and nickel-based alloys are suitable. We also support reinforced coatings with Tungsten Carbide particles for extreme wear resistance.
Contact Shanghai Duomu today for a consultation on your PTA and Laser Cladding needs. Our engineers will get back to you within 24 hours.
