Pretreatments
Just How Clean Is Clean?
Most finishing consultants have lost count of the number of times that inadequate cleaning and pretreatment was the cause of defective painting or plating. Skip plating, blistering, delamination—these are just some of the commonly found defects caused by poor cleaning.
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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Q: Best type of polymer for a baking enamel?
Carl Izzo has the answer to this question and many others
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 MoreTanks for Citric Acid Passivation
We want to change over to citric acid bath passivation. Can we use the same tanks that we use with nitric acid?
Read MoreAdhesion to Zinc
We tried washing the part with an iron phosphate wash, and it helped some, but we still did not get 100-percent adhesion. Can anything be done to the part to get the topcoat to adhere?
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"A Step Beyond Clean" show is Oct. 18-20 in CT.
Dow SAFECHEM, Hubbard-Hall and Pero team together for demonstrations on next generation, emission-less cleaning machines
Read MoreSteam Cleaning/Phosphating
We have been getting field complaints that the paint is peeling off in certain areas even before shipping. Apparently, this is because of insufficient degreasing and phosphating with the manually operated steam cleaner.
Read MorePhosphate Bleed Through
All of a sudden we began having problems with the appearance of our coated products. The irregularities in the phosphate coating are telegraphing or bleeding through the paint when the high-solids coating is applied.
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