Part is a torsion spring w. Max 180° rotation .
Must last 12,500 reps.
Made of super alloy w. High Cobalt & Moly.
My thought was either a sacrificial coating or pure barrier w. Platinum group metal alloy.
We are experimenting with various combinations now.
Corrosion occurs on outside dia. at...
thread338-315503
Although various SS alloys can work well with wet HCl gas and liquid HCl there are certain coatings that can also protect against HCl corrosion of some steels . Various Pt group alloys are highly resistant to HCl as is Ta.
The difficulty is the high melting point of these...
We are testing metal coatings applied to mild steel for marine petroleum well oil tool applications.
We are having some success in seawater using Al-magnesium base with certain Hastelloy
mid stack and chromium top layer , all in specific proportions .
They are applied using our patented ion...
Need help/insight on SCR problems.
We have 240 3-ph center delta xfrmr feeding 2 phases to create 1-ph 240 to an SCR. It is set to phase angle as it feeds a 10/1 step down buck boost delta xfrmr which feeds heater filaments.
40 amp input.
When SCR set to full we see 156 v and 17 amps.
Same SCR...
