What is required for heat-treated aluminum parts after completing welded repairs?

After completing welded repairs on heat-treated aluminum parts, it is essential to have them re-heat treated. The welding process can alter the material structure and properties of the aluminum, potentially diminishing its strength and durability. Re-heat treating restores the original mechanical properties by allowing the metal to achieve the necessary hardness and strength levels again.

This process is critical because welded joints can be susceptible to problems like cracking or reduced load-bearing capacity if not properly treated. Re-heat treating ensures that the integrity of the aluminum part is maintained, making it suitable for its intended application.

While painting, coating with oil, or leaving the part in its current state might be considered maintenance or protective measures, they do not address the fundamental changes that occur in the material properties due to the welding. Thus, re-heat treating is the necessary step to ensure the part returns to its specified condition.