Explore our flagship industrial cladding equipment designed to bypass traditional welding bottlenecks, offering exceptional wear resistance and precision cladding.
WIG-Schweißen (Tungsten Inert Gas Welding, or TIG) has long been the gold standard for high-quality manual joint welding due to its neat bead appearance. However, when utilized for heavy-duty surfacing, hardfacing, and cladding projects, serious drawbacks (Nachteile) emerge that impact productivity, metallurgical properties, and scalability.
How modern plasma transferred arc (PTA) and robotic laser cladding technologies bypass the traditional disadvantages of manual WIG-welding.
| Performance Metrics | WIG-Schweißen (TIG) | PTA Cladding (Plasma) | Laser Cladding Systems |
|---|---|---|---|
| Deposition Rate | Low (0.5 - 1.5 kg/h) | High (3 - 10 kg/h) | Medium to High (2 - 8 kg/h) |
| Dilution Rate | High (15% - 30%) | Low (5% - 10%) | Ultra-Low (2% - 5%) |
| Heat Affected Zone (HAZ) | Large (thermal stress risk) | Medium (localized arc focus) | Very Small (minimal distortion) |
| Automation Level | Mostly Manual / Semi-Auto | Highly Automated / Robotic | Fully Digital / CNC-Integrated |
| Alloy Compatibility | Wire-fed / Cast rods only | Powders (Fe, Ni, Co, Carbide) | Spherical Metal Powders |
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 facilities operate under strict Quality Management protocols, catering to Global Industry 4.0 specifications.
We boast an independent R&D team that develops, produces, and sells plasma cladding machine equipment. The welding machines we manufacture have 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. We have mature technological means to provide complete sets of industrial equipment solutions.
Our global procurement clients benefit from our integrated logistics network, custom firmware support, and high component reliability which bypasses typical supply chain interruptions.
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.
Hardfacing plowshares, tillage teeth, and rotary cutters for extended field life.
Superalloy component repair, turbine blade restoration, and high-precision laser cladding.
Stellite cladding of ball valves, mud pump components, and drill stabilizers.
Restoration of continuous caster rolls, heavy stamping dies, and guide rollers.
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 machine, pick cladding machine, valve cladding machine, etc.
Traditional WIG-Schweißen limitations cannot match the flexibility of our customized multi-axis CNC manipulators. Whether it's laying down tungsten carbides on drill bits or repairing critical wear surfaces on aerospace components, Shanghai Duomu matches your industrial tolerances with high accuracy.
"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."
"In industries such as mining, cement, power generation, steelmaking, chemical processing, and biomass energy, screw conveyors are often regarded as auxiliary equipment. PTA cladding protects them from unplanned downtime."
"In Plasma Transferred Arc (PTA) hardfacing, achieving a high-quality overlay is not only about selecting the right alloy powder. One of the most critical factors is controlling the dilution rate."
The primary limitations are low deposition rates (slowing down process cycle times), high dilution rates which contaminate the properties of the wear layer, and significant heat input leading to warping and cracking in large workpieces. High reliance on manual labor also limits the reproducibility of the weld profile.
PTA (Plasma Transferred Arc) uses a highly concentrated plasma arc, which creates a narrower Heat Affected Zone (HAZ) and significantly lower dilution (5-10% compared to 15-30% in TIG). PTA also handles carbide and metal powder mixtures easily, resulting in much higher deposition rates (up to 10 kg/h).
By partnering with Shanghai Duomu, buyers benefit from China's robust industrial supply chain, competitive R&D costs, and advanced robotic integration. Duomu offers customized engineering systems that integrate lasers, control units, and powder feeders to meet international QA requirements at factory-direct pricing.
Yes. Shanghai Duomu specializing in custom-built rigs, including hydraulic rod cladding platforms, automated ball valve welders, and robotic systems for multi-axis blade cladding. These are designed to streamline production lines and optimize consistency.
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