dlaery Posted September 17, 2013 Report Share Posted September 17, 2013 I am powder painting some lead heads with EC Sea Guard hooks.and when I bake them in the oven at 375 F the Sea Guard finish on the hooks are turning color like light blueish Will this effect the effectiveness of the corrosion protection? Is there a magical temp they need to be baked at? Quote Link to comment Share on other sites More sharing options...
gone2long Posted September 17, 2013 Report Share Posted September 17, 2013 Well if your not pouring hundreds you could always set the paint with a heat gun/torch Quote Link to comment Share on other sites More sharing options...
dlaery Posted September 17, 2013 Author Report Share Posted September 17, 2013 Well that sounds good. I have never tried to "set the paint" with a heat gun, I guess I don't have much faith in that not being able to control the heat, melting the lead off. These need to be as hard as possible to resist chipping. These weigh 3 to 8 ounces and when I try to hold them with needle nose, the serrations on the nose kind of dig in to the hooks. I looked at some radiator hose pliers (the kind that clamps the hose shut) but I didn't think they would hold but maybe I ought to try them. I do have to do 1000+ at a time. I have a 13 x 18 fluid bed I have been trying to use it but been having problems with it also. Quote Link to comment Share on other sites More sharing options...
Basseducer Posted September 17, 2013 Report Share Posted September 17, 2013 Try lowering the cooking temp to 350. If that helps with the color, but you are worried about durability give it an extra five minutes. Quote Link to comment Share on other sites More sharing options...
dlaery Posted September 17, 2013 Author Report Share Posted September 17, 2013 Thanks!, I'll try that. Quote Link to comment Share on other sites More sharing options...
FishAction Posted September 18, 2013 Report Share Posted September 18, 2013 You are definitely too hot or a combination of the high heat and too long in the oven. Had the same problem with EC nickel saltwater hooks. Solved the problem by using low temp cure powder paint that requires 340 degrees for 10 minutes. Using the same heat level on all powder paint isn't a good thing to do though several people on this site state they always use a certain heat level for a given time. Rarely has anyone mentioned the manufacturer's heat/cure time specifications, Powder paint is either a low temp or high temp cure and this info should be provided on the package the paint in is. Most do or will provide it for you. Recommend you find out the heat/cure time for the paint you were using and give the specific levels a try if it's not a high temp cure paint. To resist the chipping you also mentioned, you need to use a polyester based paint. Epoxy and epoxy/hybrid powder paint chips the most even when cured properly. They are more brittle and have less environmental exposure resistance. Polyester paint is made to withstand environmental exposure and is hard to chip when cured to the manufacturer's recommendations. Polyeurthane powder paint is the best but is usually more expensive and I haven't found all the colors I use and It, for me, is more difficult to achieve a consistant coating without being too thick. For example, Pro-Tec is polyester powder paint and their heat/cure times are not the same for all their paint choices. Pro-Tec paint is extremely chip and plastisol resistant. Charlie Quote Link to comment Share on other sites More sharing options...
dlaery Posted September 18, 2013 Author Report Share Posted September 18, 2013 Thanks Charlie. I get confused :?when looking at baking temps I have this chart that I think originated from Component and the bright colors call for 10 min, at 375 F and the White/ white Pearl call for 325 F for 13 min. Then I have another sheet that doesn't jive with Component chart, I can't remember where is came from.. When I get paint from Columbia Coating, Powder by the pound they have a generic recommendation of 350 F 20 min Yes I baked these higher than the directions called for, but I was curious if anyone else had any similar experiences with these Sea Guard coated hooks discoloring. Quote Link to comment Share on other sites More sharing options...
FishAction Posted September 19, 2013 Report Share Posted September 19, 2013 On powderbuythepound.com I went to the discription of several paints and each has heat and cure times. The first listed 375 degrees for 15 minutes at part metal temperature. Second was 400 at 10 min. If you order paint from them, each paint has this information as part of their discription. Place a label on each container of paint with this information so it's at hand when used. Don't have worry about it this way. One exception I've encountered is with Pro-Tec watermelon red. Curing to the listed level results in red flake melt down. Had to experiment and found a much lower level where it had flash yet had acceptable hardness. I use an oven thermometer and don't rely on the settings. One other thought on this subject is the mass of the jigs you are painting. That large a jig heated to levels beyond recommended settings will retain the heat longer than smaller jigs and keep the hook finish heated much longer than the oven time. This probably adds to the discolored finish. Charlie Quote Link to comment Share on other sites More sharing options...
toadfrog Posted September 20, 2013 Report Share Posted September 20, 2013 Some time ago I did a little R&D on effects of temperature involving powder paint . If you are not in a hurry try this . I call it GHI graduated heat increments . Pre heat the oven to 150 degrees . Put in the heads increase heat 25 degrees every 10 minutes until you reach 330 . Leave for 20 minutes . Can take it to 350 on hooks that won't have the coating affected . Once you have done this put a head on a rod and line whip it hard on a concrete floor . Then let me know what ya think . Quote Link to comment Share on other sites More sharing options...
