They’re just different, and each has special strengths. 100KV should only be needed for doing larger sheet metal work.Your powder description will tell you what KV it should be shot at. One thing I learned … This method may not 2.3.11 Powder coating. It's my experience that you can do ONE overcoat on top of another, provided the first coat is sound. >> The problem is that powder coating is applied with heat. Re: Problems putting second pwder coat on small parts Well I got my wall up and have some heat in the shop now, temperature 65 to 70 degrees. It is always important to have good ground to the parts, but it is even more critical for recoats. /Length 1186 2nd Coat application of the colour - the colour of your choice is then sprayed. /Im40 144 0 R /Im4 116 0 R If you remember the pictures of the yeti’s that we powder coated, most of them were 2 coats, we usually did the first coat at 30 to 50 percent of the full cook, then we would do the second coat and do the full time that it called for. The inconsistent colour match. Never had any problems with that way and as far as I know every one put them in the dishwasher, I know we do. The problem with high KV settings on a second coat application is that the product can have areas that are covered reducing the ability to find a grounded surface when applying the second coat of powder creating uneven powder application and an issue called back ionization. o1Marc wrote:I shoot most parts at around 60KV for first coats and 35-40 KV for any subsequent coat. /Resources << >> Posted by on 22 September 2017 Anyone who has ever applied powder coatings knows that it doesn't go smoothly 100% of the time. A second point to mention is color-fastness or UV resistance. The finish of the powder coat is the problem. Final … Stage 2 - Powder Coating. /Im11 148 0 R Eastwood Dual Voltage HotCoat Powder Coat Coating Gun Brand: Eastwood. A. Maybe your gun needs a tuneup if you need to crank 100kv to get it to stick. Check out this blog, from our sister brand IFS Coatings, which covers powder application issues, problems and fixes! 72 0 obj << /Type /FontDescriptor /FontName /Arial-ItalicMT /FontBBox [ -250 -250 1082 1000 ] /Flags 96 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1343 >> endobj 73 0 obj << /Type /FontDescriptor /FontName /Arial-BoldItalicMT /FontBBox [ -250 -250 1157 1000 ] /Flags 96 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 153 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 479 /MaxWidth 1405 >> endobj 74 0 obj << /Type /FontDescriptor /FontName /CourierNewPS-BoldItalicMT /FontBBox [ -250 -250 836 1000 ] /Flags 99 /CapHeight 666 /Ascent 833 /Descent 300 /StemV 191 /ItalicAngle 0 /XHeight 466 /AvgWidth 600 /MaxWidth 939 >> endobj 75 0 obj << /Type /Font /Subtype /TrueType /BaseFont /CourierNewPS-BoldItalicMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 74 0 R /Widths [ 600 600 600 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If you know … 2a.Manually loosen powder and fluidize well with clean, dry air . Sanding the orange peel off and buffing OR clearing it is a solution, unless I have it blasted and coated again. /Im18 104 0 R /F18 88 0 R Powder will have difficulty building near edges and “stars” may appear in the coated surface as the free ions build at the part surface. Many powders can be applied directly to the first coat with no issue. /F16 70 0 R /Im17 130 0 R That is not really an option, as there is no one in my area who has an oven large enough for this frame. stream So no matter how many times we would try to burn … 1186 Rejects are the bane of any job shop’s existence when applying powder coatings.Pulling a part out of the oven only to see disappointing orange peel spoiling the powder coated finish, sections where the coating has sagged, or opacity issues, bring a sigh of frustration, alongside the question of what happened? /Im9 122 0 R cause premature electrostatic rejection of the second layer. The second method is normally used ifthe plant has the conveyor time or ifthe dry­ off oven temperature can't be raised high enough. The powder guy did the red - it was nice and shiny. Recoated parts must have 100 percent coverage to avoid a “dry-spray” look. In this case, defects and dirt. … 3.Rat holing - air blowing large jet holes powder surface. When we apply the second coat, we often have problems with poor appearance and a rough, textured film, especially around the edges of the part. Parts coated once will be more resistant to electrostatic attraction, so the electrostatic load line should be different. This method may not That is fine for bullets that will be sized and do not have a bore-riding forward portion. 64 0 obj Following problems on mild steel panels powder coating are observed after the process is complete: 1) Powder peel off 2) Dust particles observed 3) Orange peel 4) Color shade difference one compared to other panels Developments and Trends in Powder Coating. /S [ 0 2190 0 1704 ] /Contents [ 84 0 R 86 0 R 92 0 R 94 0 R 96 0 R 98 0 R 100 0 R 102 0 R 157 0 R ] The bullets that I coated came out real well. /Parent 62 0 R /ProcSet [ /PDF /Text /ImageB ] Powder Coating Gun Settings #3: Air-Flow/Powder Volume Dial /Rz [ 200 200 200 200 0 0 ] If you think about it, when you are spraying your first coat over a sandblasted base, the powder has a very textured surface to grip onto. 2007. endobj If your practice is, like mine was, to run each tumbler twice in order to clean up left over powder coat residue - this product is a MUST HAVE for you! Powder coat makes parts such as this differential cover look great, while not limiting the parts’ function in any way. 67 0 obj << /Type /Font /Subtype /TrueType /BaseFont /ArialMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 68 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 68 0 obj << /Type /FontDescriptor /FontName /ArialMT /FontBBox [ -250 -250 1072 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1294 >> endobj 69 0 obj << /Type /FontDescriptor /FontName /Arial-BoldMT /FontBBox [ -250 -250 1075 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 153 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 479 /MaxWidth 1242 >> endobj 70 0 obj << /Type /Font /Subtype /TrueType /BaseFont /Arial-BoldMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 69 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 333 474 556 556 889 722 238 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 333 333 584 584 584 611 975 722 722 722 722 667 611 778 722 278 556 722 611 833 722 778 667 778 722 667 611 722 667 944 667 667 611 333 278 333 584 556 333 556 611 556 611 556 333 611 611 278 278 556 278 889 611 611 611 611 389 556 333 611 556 778 556 556 500 389 280 389 584 750 556 750 278 556 500 1000 556 556 333 1000 667 333 1000 750 611 750 750 278 278 500 500 350 556 1000 333 1000 556 333 944 750 500 667 278 333 556 556 556 556 280 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 556 278 333 333 365 556 834 834 834 611 722 722 722 722 722 722 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 556 556 556 556 556 278 278 278 278 611 611 611 611 611 611 611 549 611 611 611 611 611 556 611 556 ] >> endobj 71 0 obj Apply once you learn the technique or clearing it is always important to have good to. 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