Typical aluminum alloys for sheet fabrication are 3003 and 5052.
Best way to clean flat black sheet metal.
Step 1 rinse with water.
For every part water combine 0 05 part mild dish or laundry detergent.
Regular maintenance will reduce the amount of dirt and chemical buildup that forms on your steel over time and will make cleaning easier in the future.
For any areas that don t wash away with pressurized water fill a bucket or other container with water.
Add baking soda then hydrogen peroxide.
That means removing all paint rust or corrosion with a scraping or sanding tool and removing dust dirt wax oil or grease with a cloth or paper towel wetted with a degreaser or detergent.
Here are a few steps to use to effectively clean galvanized metal.
Followed by another sprinkling of baking soda to top it off.
The solvent will leave a hazy film on the metal.
Repeat the procedures in steps 2 and 3 this time using rolite ap300.
To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime.
Opt for something soft to protect your roof s paint and parts.
After polishing use mineral spirits to remove as much black residue as possible.
Before you wash the galvanized metal simply rinse it off with a hose or some clean water.
Continue to apply etcher to wet the surface as you sand.
Step 2 hot water wash.
To prevent burn through and warping don t whip or weave the torch.
Sprinkle some baking soda on the baking pan or sheet.
Then follow that up with hydrogen peroxide see more this wonder cleaner can do.
Apply the soapy water to an abrasive sponge and scrub the aluminum vigorously.
Squeeze one or two drops of mild dishwashing detergent into a cup of water.
Techniques for welding sheet metal.
Repeat the procedures in step 2 using rolite metal polish fiberglass cleaner.
This will get rid of the large debris and most of the smaller rocks sand or other pieces of particulate that can scratch the metal.
Use a cloth or sponge to clean.
Thoroughly clean the metal surfaces to be bonded.
Mix water and mild detergent for stubborn areas.
The mill scale will slowly start to be removed.
At this point it is time to final clean to a brilliant shine.
Filler metals for either of these would be 4043 or 4943.
Anodized aluminum requires an abrasive.
A 5356 filler metal also works for 5052 materials specifically.
Use fine grit sandpaper to roughen the metal surfaces you will be gluing together.
Using your sanding block make long smooth motions along the metal.