Powder Coating
Smoky Oven
When I run a lot of powder coated metal through my straight shot oven, the building begins to fill with smoke. The building has a negative airflow. I know this because when I open the doors I feel a lot of air being pulled in. Do you know of a quick fix or maybe an airflow specialist who could help? Or could it simply be an exhaust problem?
Read More500-HR SALT-SPRAY REQUIREMENT
We have been experiencing some coating failures lately and we are trying to figure out how to find the root cause and what tests we can use to prevent them. We need to pass a 500-hr salt-spray requirement, and we cannot always meet the specification.
Read MoreUniform Coverage
We need suggestions on how to set up our racks and how to adjust our spray guns to get more uniform coverage on all four sides of the post.
Read MoreWhat is Causing Streaks?
We apply a medium-gloss gray powder at thickness of around 3–5 mils. Some of our panels have a large surface area and we sometimes get some streaks on the parts and areas that are darker than others. Any advice you can give us on the cause of the streaks and how to avoid them would be appreciated.
Read MoreDisposing of Waste Powder
Is there some way to use the over-sprayed powder instead of throwing it out? Are there any alternative ways to dispose of waste powder?
Read MorePretreatment Before Powder
A customer has just purchased a powder coating plant. The steel is being stored outside and is very rusty prior to powder coating. Please provide recommendations for pre-treatment prior to powder coat.
Read MoreRE-SPRAYING PARTS
I was under the impression that if you wanted to rework and re-spray over a powder coated part the following steps should take place for the best results. Please answer these questions for me.
Read MoreCHROMATE CONVERSION COATING
A potential client is sandblasting an aluminum substrate and applying 4–6 mils of a fairly standard white powder. The idea would be to save on powder material, as I would think 2–3 mils over chem film would be a great system. I am looking for information to support this suggestion. Can you also touch on what happens to the chem film when the powder is cured at nearly 400ºF?
Read MoreWhat's In Oven Exhaust?
Where can I get solid information that they can read for themselves about whats going out the oven exhaust?
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