Please subscribe to my monthly newsletter so you don't miss a thing. The limit of staining permitted for near-white metal blast cleaning is no more than five percent of each unit area of the surface. If the bake schedule is 10 minutes @400 degrees, you must wait until the part reaches 400 degrees to start the 10 minute timer. Any extra info regarding wood/MDF powder coating will be well received.Keep up the good work and thanks again. Hi Sean,Thanks for this site and the work you put in. Chloride Testing / Bresle Bresle Patch Method - The most of the coating specification requires that chloride testing ( Bresle Bresle patch Method) being performed before sandblasting.

When do I add clear coat or a second coat of color? We will be updating and growing this site with more and more of industrial inspection related articles. Blow off all dust with air compressor (this air needs to be clean and dry too)5.

paint) you outgas with the finish on it after you clean the part?

Then you would let the part cool completely to room temperature, and shoot your 2nd coat whether that be clear or a translucent candy. 2. The question then boils down to, does a part still outgas even with an existing painted finish? Do I add after the first coat is cured? 5.5. You might need to perform the MEK rub test to insure that you have achieved proper cure and if the coated part eventually will be exposed to sunlight, you might send some samples to a laboratory that can subject the samples to a weather-ometer where UV light (and perhaps also humidity) will accelerate coating degradation. You would then put the part back into the oven and bake it again. Other periodic laboratory tests may be needed. Adhesion is one of the most important parameters, and I would perform both a dry and wet adhesion test per ASTM 3359 Method B.

2 removes all dust, coating, and mill scale. Click on below Like and G+1 buttons! The Test is conducted as per requirements of ASTM D 4285. In between step 6 and 7 do you preheat the part before coating with powder ? The audit focuses on the manufacturing process and its related supporting functions.

I would try PPG first, here is their contact page: http://www.ppg.com/coatings/industrial/Pages/contactus.aspx .

1) I'm wondering when you hang your part to be powder coated does it matter where the part is hung from?

I heard there are some lover temperature powders or even UV curing ones but I can't find a place to buy them.

SSPC-SP1 Solvent Cleaning is an essential requirement and it is done before surface preparations such as SSPC-SP 10/NACE No. SSPC-SP 10 Near-White Metal Blast Cleaning (NACE No. Most paint is removed by the pressure washer cleaning step. 4 removes all visible oil, grease, dust, dirt, as well as loose mill scale but tightly adherent mill scale, rust, and the coating may remain. Wouldn't you sandblast and blow-off first, degrease & clean, then Outgas? Sandblasting works great to clean off dry things like paint or other previous coatings, but when you contaminate the media with something wet like grease or oil, your parts will not come out clean, there will be grease/oil deposits which will be difficult to clean off. Powder coatHopefully that answers your question, let me know if you have any more questions. Copyright © 2012-2013 Inspection-for-Industry.Com. SSPC-SP 10/NACE No. I've scoured around but I have not been able to find my answer. I actually have the exact same question lol. The only reason pre-heating the part is done is to overcome faraday cage issues with cheaper powder coating guns.

Surface Dust Test is performed after air blowing on the blast-cleaned surface and is done based on procedure outlined on ISO 8502-3 to ensure all dust and grit being removed from the surface. This is a topic that I will definitely explain in complete detail in several articles, but I will explain the process briefly to answer your question. Just like painting, there will be a hook mark when shooting powder. More than 300 Articles! SSPC-SP3 Power Tool Cleaning is frequently used when contamination to adjacent areas is a concern by sandblasting or is not feasible. 2 near-white blast cleaning or SSPC-SP 5/NACE No. Generally speaking, the four basic tests discussed in this article should be included in any powder finishing process.

The powder used for the process is a mixture of finely ground particles of pigment and resin, which is sprayed onto a … It is not 100% necessary to coat the entire barrel of the rim and as long as you coat past bead, there should not be any durability issues. Are your steps assuming a bare metal part with no prior finish?

It should only be done if aboslutely needed but it should not be apart of your normal procedure. Powder coating is an advanced method of applying a decorative and protective finish to a wide range of materials and products that are used by both industries and consumers. If you sandblast a dirty part, all of the greasy crud on the part will end in up in your sandblasting cabinet. i'm a newbie. To expand on your question, sandblasting would be the next step after outgassing (step 4). Does this alter the stability/durability of the powder coating where the bare metal and powder starts?Thanks again,Andrew.

I always coat the entire wheel including the barrel mostly because it looks more professional. Just a word of caution though, these companies do not sell by the pound, they like to sell in bulk. does it needs to be heat the stuff in 200degree before spraying the powder coat?

Disclaimer: Powdercoatguide.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. So, just to recap:1. 1.

No, you do not need to preheat the part at all before powder coating unless you are doing so to outgas cast metal parts. The best way to find out about these powders is to directly contact the powder manufactures. If I can, I always try to hang a part from an area that will be masked off anyways, like a bolt hole.

Powder Coating: The Complete Guide is an educational site for powder coaters. Paint Dry Film Thickness Measurement is addressed on SSPC-PA 2 and provides information to how to average the readings and determine DFT acceptability. Your chemical supplier should be able to assist you in setting up an appropriate quality control program. 1) is to be used to clean unpainted or painted steel surfaces prior to applying high-performance protective coating or lining systems. Grab the uncoated sides of the wheel with gloved hands and turn it over so the masked hub is now sitting on the metal cylinder.5. This method allows the 2 coats to interlock and chemically adhere to each other. Air Compressor Blotter Test Based is performed to identify oil and water contamination on the air compressor. This subject is one of the important items in coating inspection process. SSPC-SP 6 Commercial Blast Cleaning removes all visible oil, grease, dust, dirt, mill scale, rust, coating, oxides, corrosion products, and any other foreign matter on the surface but allows up to 33% stains or shadows remain of each unit area of the surface.

Did you find this article useful? Proceed to coat the sides and face of the wheel.6.

No, I always avoid preheating parts if I can. However, there are some scenarios where corrosion could start inside the barrel and eventually work its way underneath the powder. You then remove the part from the oven and let it cool completely.

Currently, you go from Step 2, Disassemble & Clean to Step 3, Outgas.

I have yet to coat mdf myself but it has been done and currently companies are working on lower temp curing powders for applications such as these.

Chloride Testing / Bresle Bresle Patch Method, SSPC-SP 5 White Metal Blast Cleaning (NACE No. i just wanna ask? Keep the questions coming!

This will give a much stronger bond between the 2 coats and will lessen the changes of delamination (where the 2nd coat peels off of the 1st coat).Just like always, make sure you do not start your timers until the part reaches the proper cure temp.

You can then spray the 2nd coat and put it in the oven for the 2nd coats full bake schedule. The only part of a wheel I do not coat is the hub.This may or not be the reason you have a concern about this.. SSPC-SP 5 White Metal Blast Cleaning (NACE No. The chrome will look like it has a texture. However, due to the powders ability to wrap around parts, the hook mark will be much less noticeable. Carefully lift the rack and slide it in the oven with the wheel balanced on the metal cylinder. 4. Supplier audit checklists for special processes - Plating Process audit Checklist: Process Audits and Layered Process Audits: 2: Jun 12, 2005: J: 1.11 Preliminary Identification of Special Product and Process Characteristics: APQP and PPAP: 4: Oct 12, 2020: ISO 9001:2015 8.5.1 f - Scope with customer special process requirements What should an auditor check during powder coating process audit? Adding Quality Control To Your Powder Coating Operation. Well it would depend on what type of paint or coating is on the part. Powder Coating: The Complete Guide is an educational site for powder coaters. In addition, you will need to measure dry film thickness of the powder coating.

1 white metal blast cleaning. Does this apply to powder coating in the same way it would to painting?2) If I am powdering a part like a rim is it necessary to have coverage on the inner well of the rim as to achieve continuoius coverage of powder or can you leave a bare spot between the bead portions? If you are using a chrome like powder coat, you would do the chrome first and complete the bake cycle 100%. ... conduct this audit. If you do not cure the chrome 100% before starting the next coat, the coating will not look the way that it should. Just one question.

2 removes all dust, coating, and mill scale. Sample Quality Assurance Procedure Checklist-1- I hope that helps out and I will definitely explain it more in detail when I get a chance to write some more articles. Example: PPG, Tiger Drylac, Sherwin Williams, ect.

What if the item has a prior finish, like paint? Powder coating formulations require different types of resins than liquid formulations to produce coating ... Chemical solutions may not remove all coatings, NOTES Self-Audit and Inspection ... efficiency for flow coating processes can reach 95%. Thanks and great work BTW! Check out the article on this site titled "How to Properly Ground your Parts". SSPC-SP 7/NACE No. For more info on each of the steps listed above, you can find its corresponding article here on the site. Project Audit Plan ... Only approved materials are used in the coating and painting process. If I am coating a wheel, I will use an eye bolt through the valve stem hole with a nut and washer.

This is the most applicable cleaning level on industry and is an important item on coating inspection.

Coating Specification article provides you a sample paint specification that applicable both for shop and site. SSPC-SP 10/NACE No.

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