How to protect metal after abrasive blasting

66 Toyota Sports 800 protect metal abrasive Blasting American Dry Stripping
1966 Toyota Sport 800 after blasting

Abrasive blasting is a safe and efficient method for removing old surface finishes like painting, powder coating or chroming, passivation processes such as anodizing, or plain rust or corrosion from all types of metal surfaces in preparation for a finishing application.

Abrasive blasting works on virtually any type of metal (or fiberglass) object: from patio furniture to car parts, to create a surface profile range from smooth to rough.

The desired surface profile is achieved because of combinations of grit size, type and abrasive qualities of the media. Before abrasive blasting, metal parts must be cleaned to remove contaminants like dirt and grease that could end up in the blast media, embedded into metal surfaces, or could interfere with the final painting or finishing process.

Here at American Dry Stripping, Newly blasted vintage patio furniture, stored in our climate controlled "clean room"

Newly blasted vintage patio furniture, stored in our climate controlled “clean room”

At American Dry Stripping, we maintain an air-conditioned, humidity controlled, “clean room. Parts can be safely stored for a short period of time. This optimizes surface readiness for surface coating or the next-step processes.

From Blasting to Coating

We recommend you have a plan in place to protect metal surfaces before abrasive blasting occurs. This is especially critical during the summer months when the humidity is much more pervasive.

The most efficient way to protect metal after abrasive blasting is to move the parts to coatings as soon as possible. We offer in-house services in powder coating and ceramic coating to ensure fast turnaround.

We contact you as soon as the project is completed, emphasizing that the metal parts be picked up and coated within a few days of notification.

How to Protect Abrasive Blasting Metal Parts

Protect metals after abrasive blasting with powder coating or ceramic coating
Protect metals after abrasive blasting with powder coating or ceramic coating

The clean, rust free metal that remains needs to be treated as soon as possible after abrasive blasting. This prevents re-rusting (which will occur rapidly if any moisture is present). Prevention is always better than a cure, and once we remove the rust, we always recommend taking the necessary measure to avoid a recurrence. By using a protective coating on your metal parts, you can ensure that they are protected from oil or grease.

For short-term surface protection — and to help paint adhesion — newly media blasted parts should be washed with metal prep. This is a diluted phosphoric acid solution available from auto parts stores as a painting preparation product under a variety of names.

You can apply the acid solution with an old paintbrush or rag. Just douse it on liberally, and let it run into seams and crevices. When the acid dries, the metal surfaces with have a dull gray color. If you need to store the parts temporarily before painting, place them in a dry a location as possible.

If longer storage is planned, the parts should be primed with a non lacquer-based primer. A lacquer-based primer allows moisture to penetrate the the metal’s surface, causing re-rusting.

American Dry Stripping and Xtreme Coatings is recognized as New England’s leader in abrasive dry media blasting for paint, rust, corrosion stripping and surface preparation for all types of hard surface materials. We built our reputation one customer at a time: treating each project as if it were our own. We are dedicated to professionalism, integrity and values, delivering the highest quality services on time, every time.

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8 thoughts on “How to protect metal after abrasive blasting

  1. It’s helpful to know that the rust free metal should be treated as soon as possible after blasting. As you say, this will prevent rerusting, which would make sense so that you don’t undo all the work that you just did. Overall, though, when you’re able to perform the right practices when it comes to blasting, then you’ll be more efficient and successful in your work. And, all the insight and tips that I can get only makes it that much easier! Thanks for sharing.

  2. Honestly, I don’t really know much about the process of sandblasting cars. Nevertheless, I like the fact that this process makes it easier for workers to remove rust on the surfaces of vehicles. It not only saves a lot of time but it also makes work more efficient. I will be reading more about the process of paint stripping and sandblasting automobiles for additional learning. Thanks.

    1. Thanks Bobby. We’ve been doing this a long time, and we love cars. It’s got to be done right of course, but blasting is a great way to protect your investment long term.

  3. I agree that prevention is always better than a cure. Making sure that the rust you just blasted off doesn’t come back should be a top priority. That way you don’t have to keep blasting it.

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