Nonferrous metal smelters operate in environments where sulfuric combustion gases, slurry, and high-viscosity particle flow cause simultaneous corrosion and wear.

Yuil Tech performs precise buildup welding and surface restoration works for tube coils, roll tires, grinding bowls, and screws at major nonferrous metal smelters including Korea Zinc.

Main Applications

• Cooling coil tubes (inner and outer surface restoration)

• Pulverizer roll tires and grinding bowls

• Screw conveyors for dehydration and transfer

• Ceramic-lined pipes for sulfuric acid slurry lines

Technical Features

To prevent chemical corrosion, acid-resistant alloys such as Inconel and NiCrMo are selectively applied, with optional HVOF and overlay composite processes.

Through precise welding and TIG-based surface restoration, tube durability and lifespan can be improved by more than 3 to 4 times compared to conventional methods.