David S. Peterson
Hazey Parts
The cleaner we used for four years worked great until recently. After the initial few days of the new bath, the parts start to develop a haze when cleaned. Is this a water issue? Should I put a water softener on the water supply? Is it some kind of build up inside the washer? Should I descale? Any Ideas?
Read MoreStainless Steel Wash Primers—Which and Where to Get It?
I have a couple of hundred 3/16-inch 304-stainless steel dowels that I need paint to bond too. I keep reading of “Wash Primers.” So what brands are there and where I can I get them? After applying the wash primer, do I then apply the top coat over it? Also, by any chance, is there such a thing as an aerosol can application of any wash primers?
Read MoreCleanliness Test
The application I have is a cleanliness requirement for a metal washer. Please let me know if you know of a test kit available to perform this type of analysis.
Read MoreHow to Dry Parts After Mass Finishing
Can you suggest the best method for drying following deburring?
Read MoreCalculating Energy Savings
I want to calculate the energy savings associated with reducing washer bath temperature.
Read MoreFRP Parts Washer
I am considering the use of a 5 stage part washer constructed from FRP (Fiber Reinforced Plastic). Do you or know anyone who has any experience with a washer constructed from this material? It is intended to wash mild steel sheet metal parts.
Read MorePassivation Problems
I am having a problem with parts passivated in citric asic. They are 303ss and passivated for 30 min. My end user is sending them out for a salt spray test and they are failing. I welcome any thoughts or ideas on this problem.
Read MoreRemoving Rust, Mill Scale And Oils In One Step
I always see the typical pretreatment stages to be a cleaner, rinse, phosphate, rinse, sealer, rinse or not. Nowhere do I see anything to deal with the rust and mill scale from the HRS steel. Is there a product that removes the rust, mill scale and oils in one step? Or are there more steps required, I can honestly say most everything I ever read about seems like a perfect world where the only thing the steel has on it is oils.
Read MoreSmut On Titanium Parts
I use a Nitric/HF bath to etch titanium. Afterwards I desmut in 45% by volume nitric acid solution. Recently I have been noticing smut on parts. The bath is eight years old. Any suggestions?
Read MoreBlisters And Creep On Aluminum Castings
We have repeatedly failed a 336-hour salt spray test on an aluminum casting. We use an immersion bath iron phosphate conversion coating (soap, rinse, phosphate, rinse) and urethane powder coating. The results have consistently been blisters and significant creepback from scribe. How can we improve our adhesion and weather resistance on these die castings? What is causing the blistering? We could instead use a TGIC Polyester? Would these powders perform better?
Read MoreReplaced Liner Just Isn't The Same As The Old
The liner on our Osrotron 10-cu-ft bowl wore out and we decided to reline rather than purchase a new machine. When we got the bowl back with the new liner, we could not adjust the machine to the same good action we had before. Our supply vendor is not qualified to help with this. We don’t know where to turn for assistance since Osro is out of business.
Read MoreRemoving Oxide Coating From Titanium
I want to find how would you remove the bluish color from the surface of titanium products?
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