Cold chemical strippers are often too dangerous to use and difficult to dispose while bake-off systems are normally environmentally friendly. Wipe off the gasket remover and loosened powder coating with a disposable rag. Burn-off stripping systems expose the products to be stripped to much higher temperatures, between 1,000-1,200F. My prescription hasn’t changed much – the problem is that the UV filter coating is starting to wear off, giving the entire lens surface a rough, partially-opaque finish. If you think that the paper is drying, consider reapplying the detergent again. These ovens usually employ water-misting systems to control the rate of burning and prevent damage to the equipment or parts/hangers being stripped. Burn-off stripping systems expose the products to be stripped to much higher temperatures, between 1,000-1,200F. Hang the aluminium object up via hooks so that you can easily access it all the way round. The heat is transferred to the medium and the gas/air pressure “fluidizes” the medium, just like a fluidized powder hopper. The key to this method of stripping is that the hangers or parts must be resistant to the temperatures employed in the process. Chemical strippers come in hot and cold chemical stripping variations and methods. Make sure that you tape the bags down, along all the ledges, with masking tape to fully protect the area. B17 will remove most powder coatings in less than 20 minutes. Normally these systems are used in batch type operations, but they can be automated for inline processing of hangers. to remove paint and strip powder coating from aluminum, zinc, magnesium, brass and steel substrates. This process is used as an inline stripping method and uses a water spray to clean chemicals and residue from the parts/hangers. Leave the object to sit for 15 to 20 minutes; you should notice the coating start to bubble and peel. Question: What methods are available for removing cured powder coatings, and what are the pros and cons of these methods? Step 4: Use a dry rag to wipe over the aluminium and remove the peeling powder coat. The powder coating also protects the bollard from damage from the elements, as well as the effects of diluted road de-icing salts. This is not normally a problem when this method is used to clean racks and hangers but can be detrimental to the surface of a repaired part. You can remove powder coating with a chemical stripper, media blasting, or a burn-off oven. A very common way to paint aluminium is with powder coating; it is sprayed onto the metal when it is very hot, where the powder melts and creates a secure bond that will last for many years. There are several ways to remove powder coat. You should also throw away the rags used to clean down the aluminium, as the remover is actually quite poisonous. It works the first time by penetrating oil on contact. Free bin supply + pick up for Industrial customers. When you want to stripe parts, boil it with water 70% to 110 °C put the parts in the Mild steel tank and cover it in 20 minutes all the coated power will peel off, By this system we have peeled several thousand Rq feet. Normally these systems are used as inline processes, either directly on the process conveyor or on spur lines operating at up to 6 fpm.  2021, The Voice of the Finishing Industry since 1936, Learn What’s Coming for Finishing Technology, Trends in Automotive Manufacturing Knowledge Center, Plating with Zinc-Nickel: Benefits and Challenges, December Issue: Agricultural, Industrial Markets, Wireless Carrier Fleet Provides Modular Overhead Conveyance. This is a great example of “time is money,” since most of the faster stripping methods are usually the most expensive to purchase and operate. Goof Off on car paint is popular as a residue remover that helps car owner in keeping their cars clean and shiny. Liquid touchup paint can be substituted for the powder coating if the repaired area is relatively small. Don't throw it in your trash or dump in on the ground if possible. Most often referred to as “molten salt” cleaning, this methodology is used to strip both products and hangers in a relatively short cycle time. Make sure to wash with wax and grease remover before you try to repaint. Does anyone have a product or trick to remove adhesive from powdercoat without damaging it? Thanks in advance. Hangers or products are lowered into the fluidized tank where the hot medium (approximately 800F) breaks down the coating, and the scrubbing action of the medium removes any ash. After 10-15 minutes, the powder coating will bubble and peel. The most aggressive blast media will remove the coating the fastest but can leave the roughest profile on the metal’s surface. Leave the object to sit for 15 to 20 minutes; you should notice the coating start to bubble and peel. All of these things can interfere with the powder coating process causing imperfections … The only exception is when a part requires spot repair. Remove 9000-Liquid Dissolver Quickly Dissolves Powder Coating in an Immersion Application. Powder coating products often contain no hazardous waste and have low VOC (Volatile Organic Compounds) or HAPs (Hazardous Air Pollutants) content, in order to meet today’s environmental demands. In a bake off system the temperatures achieived will typically be 640 - 750 degree farenheit and parts will take 3 - 6 hours to become clean. Cold chemical strippers are usually solvent-based products and can be very dangerous to work with because of health concerns. Apply a dab of polish about the size of the stain and rub it in a circular motion to remove the stain. Thanks for the help. Finally, chemical strippers can strip parts at 30-60 min. Infrared cure is gaining increased attention from coaters as a result of shorter cure cycles and the possibility of smaller floor space requirements when compared to convection oven curing. It has a high concentration of methylene chloride which is what removes powder coat. That's it! We will contact you soon. Enjoy! If you process lightly made parts or hangers through an aggressive cleaning system, then you may be scrapping more hangers or parts than you would like. Every powder coater has to face this problem eventually, either for cleaning racks and hangers or stripping parts that were rejected. Begin by coating your car windows with soapy water using sponge. Cut through paint and coatings on powder-coated metal and plastic. This method of stripping is more effective on hangers and racks than on products, since the higher temperatures can warp the parts. Are TGIC-Free Powder Coatings Right For You? Parts or hangers removed from this process are essentially clean and require no additional cleaning efforts. These three methods – chemical stripping, thermal stripping and abrasive blasting – each have benefits and disadvantages which may affect their suitability for your project.If you are removing coating in order to apply a new coat, remember: Surface preparation is paramount for an effective and successful coating application. Do you need a batch or inline stripping process? But if you’re planning to do it yourself, you will have to use a solvent treatment. But don’t forget the operational cost of the system you select. Mechanical cleaning systems can be automated or batch operations. This ensures that you and the supplier will have similar expectations of what the hangers/parts will look like after they are stripped free of the powder coating and how much effort it will take to get them stripped. I spent last evening trying to remove the coating and restore my lenses to a like-new condition, and I’m happy to say I can see again, thanks to a little polishing effort. Testing products like Goo Gone, Simple Green even using a clay bar at one point etc I ended up using Goof Off with a well used dish washing pad. This method uses temperatures of … Let papers settle in for several minutes. Bake-off stripping systems are batch-type processes where parts and/or hangers/racks are loaded into the oven for cleaning. Burn off. At these temperatures, the coating ignites quickly and literally burns away from the product. This method uses temperatures of 650 – 750 degrees Fahrenheit and will take about 3 to 6 hours to clean off powder coating. The methods that provide the cleanest parts/hangers without any additional steps are most appropriate for inline stripping systems. B.D. If you aren’t happy with a particular powder coating job or you would like to change the colour, it can be quite simple to return your aluminium to its original state. It works best on steel and non-structural aluminum parts. To use the stripper, you simply dip the part in and wait. If you notice remaining spots of the coating, give them a spray with the gasket remover and leave to sit again. As the name implies, these media are “shot” at the coated surface, removing the coating via abrasion. Copyright © And, finally, you should provide sample parts/hangers to the equipment suppliers for testing before you purchase any stripping process. In either case, the methods remain the same. You may need to reapply as some areas will be missed the first time. This alternative to TGIC-based polyester powder coatings offers similar performance and enhanced transfer efficiencies. According to our powder coater, the coil springs have 3 coats of the gold color and 2 coats of the clear, but he didn't say what was the best way to remove over spray or just clean the parts afterward. I used a bit of goof off in an inconspicuous area inside on the backside of the firewall and it turned the powdercoat grayish. Powder coating is basically paint, so you will be using a strong paint-removing solvent. Water quenching is used to extinguish the fire and to remove the residual ash. Apply with a brush or roller. Now we can deal with stripping methods, which by definition require the complete removal of all the powder coating from the part or hanger. The hot strippers are usually caustic and degrade the coating from the part by causing it to swell, dissolve, etc. Normally these systems are used as inline processes, either directly on the process conveyor or on spur lines operating at up to 6 fpm. If you notice remaining spots of the coating, give them a spray with the gasket remover and leave to sit again. Thanks for your enquiry. When done, cover the surface with newspaper. The oven temperature is set between 650-750F, which is generally the temperature where the coating will degrade and eventually ignite. Goof Off is a remover that acts as an adhesive remover on the car’s paint. The finish is a low gloss or satin and most removers are pretty harsh. The stripping method of choice should be selected based upon the following criteria: Often the stripping time vs. capital costs argument determines which process you will select. I prefer to use disposable foil that I can wrap up and dispose it at a safe rinsate location at the dump. Use these low-odor fast-acting removers to prepare surfaces for refinishing. Fluidized bed stripping systems use inert media (sand or oxides) as a heat transfer medium. A powder coating polish has a light abrasive formula that will actually scratch the surface very lightly to “scrape” the stain off of the surface. Good luck, go slow, be careful, and enjoy your knife! Inline systems are always more expensive than batch stripping systems. However, having enough hangers to support a batch type stripping process can be more expensive than buying an inline stripper in high-production powder coating systems. Choosing the right conveyor system, coating technology, and ancillary equipment. Parts that are made of magnesium or have soldered joints would not be good candidates for this stripping process, since temperatures can be as high as 1,200F. The byproducts of this process (VOCs) are often destroyed by afterburners in the exhaust stack. The three main techniques used for powder coating removal. Chemical stripping methods can use either hot or cold stripping chemistries in a batch-type process to remove the coating from parts/hangers. Mechanical stripping methods entail the use of blasting media. Never forget to use goof off spray to remove residues afterwards. What methods are available for removing cured powder coatings, and what are the pros and cons of these methods? Now here’s a great topic that we haven’t discussed before. Hot strippers are essentially a caustic bath, kept at about 80°C . Knowing how resistant to chemicals powder coatings are makes one think how nasty these cold strippers can be. The part should be processed and fully covered after sanding to complete the repair. Sometimes this method is used in conjunction with other stripping methods, such as removing the ash left on a product that was thermally cleaned. B17 will remove most powder coatings … When powder coating, it is very important that the item you are coating is completely clean of oils, dirt, paint, rust, corrosion, and damaged plating (zinc, nickel, chrome, etc). Chemical stripping. The operating temperature is about 800-900F. The powder may be a thermoplastic or a thermoset polymer. Thermal cleaning methods use heat to breakdown the coating and turn it into an ash residue, usually removed by water or media blasting. Basically, these systems ignite natural gas or propane in a chamber below the tank and force this heat through the medium using air pressure. Remove 9000-Liquid Powder Coat Remover/ Dissolver . Your problem is stripping of powder coating,The best and cheap way is, Take caustic soda and mix with 50 % water and heat at about 75 °C and keep it in plastic container. Your part should be stripped down to the bare metal. T E C H N I C A L D A T A S H E E T  Description Remove 9000-Liquid Powder Coating Remover/ Dissolver is a Non-Methylene Chloride Formula used at Room Temperature to Remove and Dissolve Powder Coating. Chemical stripper, media blasting, or a burn-off oven the chemical bath control the rate of burning and damage! 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