What primer can I weld through?

Reviews of Some Top Weld-Through Primers

• Dupli-Color DPP108 Prime Pros. This is a durable primer that is fairly quick drying and completely seals the metal surface to provide superior corrosion resistance.
• 3M 05917 Weld-Thru Coating II Pros.
• U-Pol Products 0768 Zinc/Copper Weld#2 Weld Through Primer Pros.

Can I paint over weld through primer?

Before welding, weld-thru primer is sprayed or brushed onto the bare metal around the welding area. Let the primer cure thoroughly before welding to ensure the zinc bonds properly to the metal. After welding, remove any remaining weld-through primer before painting to ensure paint will adhere to painted surfaces.

What does weld through primer mean?

Weld-through primers are generally a zinc-based product that is applied to the mating surfaces prior to welding. “When spot welding panels, spot sealer must be applied to the mating surfaces to prevent rust formation.” This means to apply a weld-able seam sealer when using squeeze-type resistance spot welding (STRSW).

Can you spot weld through weld through primer?

Weld-through primer was still allowed for squeeze-type resistance spot welding, Tobie said. There’s enough current in such joining that the joint holds “no matter what,” he said. You still have to properly prep the metal surfaces being welded, of course, he said.

What is Weld through primer?

A weld through primer is a specially designed primer applied on welded surfaces. These primers are generally applied prior to the welding process.

Does Weld thru primer work?

The weld through primer prevents rust and corrosion from occurring because while the welding process occurs, the applied weld through primer turns into a liquid and runs into the weld pool to fortify the welded materials from encountering any rust or corrosion problems down the road.

What is the best spray primer for metal?

Simply put, epoxy is the best primer for bare metal, making it excellent for newly fabricated metal parts or ones that have been fully stripped. 2. Mixed Surfaces – Some primers and coatings need the entire surface to be uniform and all the same material.