Hang the aluminium object up via hooks so that you can easily access it all the way round. Step 2: For areas of the powder coat that you do not wish to remove, cover them with some paper bags. Make sure that you tape the bags down, along all the ledges, with masking tape to fully protect the area. Step 3: Spray the sections of the aluminium that you want to remove the powder coat from with an industrial strength gasket remover.
Leave the object to sit for 15 to 20 minutes; you should notice the coating start to bubble and peel. The part does not require additional cleaning. After several hours only ash should remain. It can take as little as 10 minutes for this process. Abrasive blasting If powder coating removal is an anger outlet for you, abrasive blasting may be your thing.
How do you choose the right powder coating removal method? Post-strip coating needed : If you are planning to apply a new coating and need a surface profile, abrasive blasting leaves a rough surface for further coating without extra steps.
Fast removal : If you want the job done quickly, a burn-off system is the fastest option. Low cost : The cheapest stripping option is abrasive blasting, though keep in mind that larger jobs require longer time and therefore more work hours.
Delicate part : If your part is delicate or will not withstand high heat, chemical stripping is the best option. Low environmental impact : Thermal stripping systems such as a bake-off system are usually fairly environmentally friendly. If environmental or health considerations are important, avoid chemical stripping. Aluminium : Chemical stripping works for aluminium as it does not damage the underlying part.
Steel : Abrasive blasting works well for steel substrates, as does thermal stripping under controlled conditions. Chemical stripping is also applicable. Where to find powder coating removal contractors in Canada The process of applying a powder coat begins with the proper preparation of the substrate, including a cleaning step. Luckily, we have lists of powder coating companies in a range of cities across Canada: Edmonton Montreal Ottawa Toronto Vancouver Winnipeg If you are removing powder coating in order to recoat an item or part, our powder coating prices overview will guide you as to your best options.
Remove powder coating yourself with stripper The industrial powder coating removal processes outlined above will probably not help the do-it-yourself remover — it is unlikely you have a sandblast room out the back! When removing powder coating at home you should follow these steps: Make sure your work space is well-ventilated , with a solid floor a garage is a good option. Wear safety clothing, including gloves, goggles and a mask or air-purifying respirator. Have a surface prepared to place the item on during the stripping process, such as a drop cloth or cardboard.
Spot test the item with the stripper. Leave the stripper for the time recommended in the instructions, then test the powder coat with a scraper. If the paint is still stuck fast, try another spot test and allow more time for it to work. If this works, move ahead, otherwise you may require a different product.
Apply the stripper. Coat the part being stripped and leave it for the same amount of time that you previously determined was needed for it to work. Scrape the paint. Once the time has elapsed, use a bladed paint scraper to remove the paint and the solvent. Dispose of the removed paint carefully.
Go over the part with an abrasive pad or steel wool to ensure that all the paint and solvent is removed. Wash down the part. Rinse the part with water and wash it down with detergent. Leave a Reply Want to join the discussion? Feel free to contribute! Leave a Reply Cancel reply Your email address will not be published. First, sandblasting can be harder to remove powder coating quickly if you have a lot of recessed surfaces on your parts.
Second, for occasional removal of powder coating sandblasting may not make sense because of the equipment you need unless you want to consider outsourcing the work. Third, to truly benefit from media savings and reduced disposal fees relative to chemical stripping, you typically need a sandblast room to be able to easily reuse your media which means your room will need to be big enough to hold your largest parts. Finally, sandblasting can take a bit more time than batch burn off ovens.
Sandblasting offers the best option for prep and powder coat removal in a single step. It can also be one of the most effective options for job shops and batch work when you need to remove an existing powder coating.
Chemical stripping involves using chemicals like an aircraft stripping agent to remove a powder coating. The benefits of chemical stripping include that it can be quick as you can wash the part down with a stripping agent or wipe it down. Additionally it is effective at removing powder coating from recessed and fine areas easily. Finally, it can be easy to do for occasional part needs as you can purchase a small quantity of stripper relatively inexpensively. The limitations of chemical stripping for powder coating include the hazards of the chemicals that you use, the potential difficulties to dispose of the chemicals, and that you will typically need to use another set of chemicals to etch the surface to prepare for a new coat of powder coating to be applied.
Chemical stripping is typically best for infrequent stripping of powder coated parts or for excessive recessed areas. Batch burn off ovens use high heat to burn powder coating off a part.
However the limitations to batch burn off ovens for removing powder coating include needing a large enough oven to hold any given product, which can require a large initial investment and can require large gas volumes to run which may not be available everywhere. Additionally, ith a burn off oven you still need to prep the surface to be able to re powder coat it. Batch burn off ovens are one of the fastest and most effective ways to remove powder coating and if you will regularly need to remove powder coating quickly can be a great option, they are also best for high production as they can be placed in a line with a powder coating wash system.
If you will be sandblasting to remove powder coating, you will want to use an aggressive blast media like aluminum oxide or steel grit. These medias will help reduce how long it takes to remove the powder coating. You want to be sure you have a large air compressor as compressed air is critical to production in sandblasting. Below are a few additional helpful resources you can review for additional information on sandblasting effectively.
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