I have read with interest the many articles on galling of stainless steel parts but also had this happen professionally in my dental life with galling of a titanium implant and its cover screw. Placement of the cover screw went smoothly without any hint that galling had occurred, it only became apparent 90 days later, following healing of the implant in the bone and the attempt to remove the cover screw from the implant that I realized that the two surfaces had molecularly cold welded. No amount of force just, as in our sailboat stainless parts could loosen the pieces. The implant had to be removed from the bone and a new larger diameter one placed in its stead. Unlike the use of a barrier, Tef-gel, in our sailboat stainless steel parts which will prevent this, there is NO BARRIER that is currently available to use on dental implants! So the next time you are in the dental chair and having an implant placed think about this article and ask your dental provider if he has ever read about this. It is in the dental literature.
GALLING
- Thread starter B00MER0N
- Start date
Interesting, Good to know about Tef-Gel as I'm very new to sailing and sailboat owning. This reminds me of a situation I encountered a couple of years ago when I built a brew sculpture for a friend. The majority of it was made of ordinary mild steels but I thought it would be a good idea to install 1/2" stainless carriage bolts and nuts on the kettle-supports above the gas burners to allow for some height adjustment and ability to level the kettles. Also figured it would keep my friend's pretty (and pricey) SS kettles from getting as scratched/damaged as I figured they would on bare rough steel. After a preliminary test fire up of the three 160,000 BTU burners we determined we needed to tweak the alignment of some of the SS "bearing bolts". On almost every bolt-nut interface it seemed like they'd been welded -- even though I had deliberately only snugged them up enough to take out any motion. I'm going to look into Tef-Gel to see what kind of temperature span it can handle. If we have any metalurgists, machinists, or other metal-savvy types out there who can answer my temp-range question, would appreciate some input. Suspect Tef-Gel 's what I want for my boat as no plans to install any mega burners on a Mac V21 but any insights available re Hi Temp SS applications might enhance our homebrewing operation.
