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Liquid Coating
Phosphatizing Powdered Metal Parts
My company makes powdered metal parts that are pressed to shape from metal powders to a density of 6.0 to 6.5 g/cc. The parts are then manganese-phosphate coated, and the phosphate coating does not always have a dark, even appearance, but is mottled. This has been attributed to the high copper content of the powdered metal parts. What do you think?
Read MorePainting Iron Castings
We are having paint adhesion failures on the centrifuges’ rotating hub, which is made of iron. Our customers have been complaining that after a couple of weeks of operation, the paint peels off the hubs and then rust takes over. What can we do to correct this problem?
Read MoreSolvent Attack on Plastic
Can you suggest a) a paint that is ductile-plastic-friendly, b) a surface treatment that may later be painted or c) another flexible, abrasion-resistant coating for this purpose that won’t weaken the plastic?
Read MoreTackoff: In Pursuit of the Perfect Paint Job
When it comes to today’s vehicles, a high quality paint finish is the first thing a consumer notices. The automotive industry is constantly improving its paint shop either by upgrading existing facilities or by building new ones to take advantage of the latest technology available. But manufacturers also go to extraordinary measures to prepare the vehicle’s surface before it is painted, including making sure the surface is clean and ready to absorb a coating.
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A Conversation With ... David Wentworth, Paint Pockets
David Wentworth is the VP of Marketing for Paint Pockets, the single-stage overspray arrestor company in Omaha, Neb.
Read MoreThe Number One Problem Facing Surface Finishers Today
With nearly one in five American workers either unemployed or underemployed it seems inconceivable that coaters and manufacturers alike would have such a difficult time finding the right people. Mention this problem to a friend working outside the manufacturing sector and your statement produces a confounded gape. Raise the issue with a coater and watch for the knowing acknowledgement. What’s the problem? There are three, actually.
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Q: Best type of polymer for a baking enamel?
Carl Izzo has the answer to this question and many others
Read MoreLatex Spraying Revisited
I read the letter from G.S. in the August issue concerning the spraying of a latex.
Read MoreSolving Intercoat Adhesion Problems
When a part is rejected because of a paint defect, we try to recoat it, but the second coat won’t adhere to the first, causing us problems. What is the best type of polymer for a baking enamel that allows it to be recoated with excellent adhesion?
Read MoreCoat the I-Beam with Parylene
Q. Let me suggest another alternative to your suggestions for treating the piece of steel from the World Trade Center, described in the September issue.
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