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Coating Interior Surface
We use a miniature foam roller on a metal rod to coat the inside of a 3/4 inch ID tube. It does work, but the coating is uneven, and the work is very tedious. I am curious to know if you have received any ideas from other readers that may help further.
Read MoreChanging from Lime To Magnesium Hydroxide
We are considering switching to magnesium hydroxide since jar tests performed by a chemical supplier indicate a 30% reduction in filter press cake at a pH of 8.5. Our flow consists of 2/3 tumbling and 1/3 nickel-chrome plating with a combined flow of 60 gal/min. Is this realistic?
Read MoreDripping High-Solids Paints
We have recently started using new paints and upgraded our painting equipment and we are now spraying high-solids paints. After a couple weeks, we started having problems with blobs of paint on our parts. We finally figured out that the problem is caused by paint overspray that gathers on the overhead conveyor and then drips on parts as they are being carried along. This is a serious problem that is causing many rejects. What can we do?
Read MoreHard Chrome or Electroless Nickel?
One of my fellow engineers has suggested that electroless nickel can be substituted in most cases for hard chrome. What are your thoughts on this?
Read More“Chasing” The Finish
We are thinking about anodizing and before we get any further into that we would like your opinion about that type of finish on this product. Is it practical to do this? What are some of the things we should be aware of as we look for an anodizer?
Read MoreDefining RCRA-Hazardous Waste
One company said since our waste stream had a lead concentration of 40 mg/liter and this is over the TCLP threshold of five mg/liter, it is a RCRA-hazardous waste and gave us a quote from transportation and disposal as such. The other company claimed they can handle it as a non-hazardous waste since the waste stream’s concentration is less than 19 times the TCLP threshold of five mg/liter. Obviously, disposal as a hazardous waste is much more expensive than non-hazardous waste. Can you help us decide which way to go?
Read MoreAdhesion to Powder Coatings
Are the different powder coatings, such as TGIC-polyester or epoxy, known to have different properties as concerns adhesive compatibility? Is there a component in glossy powder coating formulations that could adversely affect adhesion?
Read MoreAll-Purpose and Environmentally Friendly
Stripper is non-acidic, non-flammable, non-hazardous
Read MoreFinishing Disconnect
Cognitive dissonance is a psychological term used to define the condition that results whenever an individual attempts to hold two incompatible, if not contradictory, thoughts at the same time.
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