Technology and Application of Double Tungsten Electrode Hot Wire TIG Cladding with NiCrMo‑3 on Inner Wall of 6m Steel Pipe
As a core conveying and load-bearing component in high-end fields such as petrochemical engineering, nuclear power, marine engineering, and pressure vessels, the inner wall of 6m-long steel pipes is subject to long-term exposure to high temperature, high pressure, strong corrosive media (e.g., acid, alkali, seawater, oil and gas), erosion and wear.
Double tungsten electrode hot wire TIG cladding technology combines the high-efficiency energy supply of double tungsten electrode composite arc and the high deposition rate advantage of hot wire preheating. Together with the excellent corrosion and wear resistance of NiCrMo‑3 nickel-based alloy, it is specially developed for long-distance, large-area cladding on the inner wall of 6m steel pipes.
It breaks through industry pain points of traditional cladding processes such as low efficiency, uneven cladding and high dilution rate, realizing precise, high-efficiency and high-quality cladding on the inner wall of 6m steel pipes. It provides reliable technical support for performance upgrading and service life extension of long pipe inner walls, and is widely used in the manufacturing and repairing of various high-end industrial long pipes.
Core Technical Positioning and Advantages
Double tungsten electrode hot wire TIG cladding with NiCrMo‑3 on the inner wall of 6m steel pipe focuses on deeply integrating the high-efficiency precision cladding advantages of double tungsten hot wire TIG with the corrosion and wear resistance of NiCrMo‑3 nickel-based alloy.
Aiming at the core requirements of “long-distance cladding, uniformity control, and low dilution rate” for 6m long pipe inner walls, it solves difficulties such as path deviation, uneven weld layers and low efficiency during inner wall cladding, achieving the core goals of “high-efficiency cladding, precise formation, and qualified performance”.
Compared with traditional single tungsten TIG cladding, MAG cladding and other processes, this technology has irreplaceable core advantages in 6m steel pipe inner wall cladding applications. Supported by the properties of NiCrMo‑3 alloy, it meets the severe working conditions of long pipe inner walls.
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Dual-arc synergy, breaking through the efficiency bottleneck of long pipe cladding
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Precise and controllable, ensuring uniform cladding on long pipe inner walls
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Low dilution rate, delivering excellent performance of NiCrMo‑3 weld layers
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Small heat-affected zone, avoiding deformation of long pipes
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Automatic operation, suitable for mass and standardized production
