Industrial Maintenance Aluminum Alloy Wire

Specification

Applications and Solutions

• Equipment Repair: Welding broken brackets, cracked housings, and worn components on heavy machinery and production lines.

• Casting Repair: Repairing defects, cracks, or wear on aluminum cast components (often using ER4043 due to its fluidity).

• General Fabrication: Building customized jigs, fixtures, railings, and modifications in workshop environments.

• Pipe and Duct Repair: Fixing leaks or installing patch plates on aluminum fluid transport systems.

FAQ

• Q: If I don't know the base metal, which filler should I choose?A: For general MRO on unknown alloys, ER5356 is often the safest "default" choice because it offers better hot cracking resistance and decent strength when joining most wrought alloys (5XXX, 6XXX) to each other. If it is clearly a casting, use ER4043.

• Q: Can ER4043 be used for structural repair?A: Yes, but only for 6XXX alloys and when the reduced strength in the weld zone is accounted for. For high-stress repair on 5XXX alloys, ER5356 should be used to achieve higher strength.

• Q: What is the most critical preparation step for MRO welding?A: Thorough mechanical cleaning (wire brushing or grinding) immediately before welding is essential to remove the thick, aged oxide layer and any grease or oil, which are the main causes of porosity and poor fusion in MRO work.