Zinc-plated Steel Plate Repair
Before spot welding the zinc-plated steel plate, remove the paint from both sides of the flange to be welded. Apply sealer to the flange after welding.
NOTE: Seal the sanded surfaces thoroughly to prevent rust.
The electric continuity properties for zinc-plated steel plates differ from ordinary steel plates. When spot welding, increase the current by 10 to 20 %, or increase the resistance welding time. Also increase the number of weld spots by 10 to 20 %.
NOTE: The MIG welding procedures for zinc-plated steel plates are similar to ordinary steel plates.
Before applying putty or body filler to the zinc-plated steel plates, sand the zinc plating thoroughly to promote adhesion and prevent blistering.
NOTE: Use only epoxy-based putties and fillers on zinc-plated steel plates, and follow the manufacturer's specifications.
When doing paint work, protect the ground wire and the ground wire mounting hole threads with a bolt or a plug.