Propeller welding repair involves fixing damaged ship propellers using specialized welding techniques to restore their shape and functionality.

Ship propeller repair includes addressing cracks, erosion, or bending through processes like grinding, welding, and balancing.

These repairs ensure optimal performance, fuel efficiency, and longevity of marine propulsion systems.

Size: Typically ranges from 0.5 meters to 6 meters in diameter, depending on vessel type.

Grade: Marine-grade alloys such as NiAl bronze, CuNi, or stainless steel (e.g., ASTM B148, ASTM B584).

Viscosity: Not applicable (solid material).

Buoyancy: Neutral or negative (denser than water).

Material: High-strength corrosion-resistant alloys (e.g., NiAl bronze, manganese bronze, stainless steel).

Welding Methods: TIG, MIG, or shielded metal arc welding (SMAW) with matching filler alloys.

Hardness: 180-220 HB (Brinell) for bronze alloys; higher for stainless steel.

Surface Finish: Polished to reduce cavitation and friction.

Repair Thickness: Minimum 3-5 mm buildup for worn areas.

Corrosion Resistance: High, due to marine-grade alloys and protective coatings.