Galling of 17-4 Stainless Steel Plate

[kmpiatek]

I am having a problem with galling on a 17-4 stainless steel plate. The plate moves back and forth and will cycle in each direction once every 15-20 minutes. This plate is sandwiched between two seals(one each side) made from Nitronic 60. Is there a better material combination that I should use? (There is amonia in the atmosphere were this si used so aluminum and bronze are not an option) Is a coating a better route to take?

 

[ecampos]

Have you tried to Nitride harden the surface?
This might alleviate the galling problem if your metal is too soft for the seals.


Edson Campos
edsoncampos@earthlink.net

 

[Nitron]

You should try ion nitriding the 17-4. Gas or salt bath nitriding will warp the part and possibly not work.
Titanium, either grade 2 or grade 4, ion nitrided will also work.
Contact me for details.
Pramod Kotwal
pramodkotwal@nitron.ne

 

[msmedesign]

as for as I know nitronic60 has very good anti galling properties. Can you replace 17-4pg with nitronic material (may e you can use nitronic50)

We had that problem with our 316 and 17-4 shaft. our solution was, either we used a special thin coating called scotsbrite and there a alot of other trade name like ultra lub, magneplate,

the other solution was to glass beat the surface of the 316 ot 17-4. we use very fine grade of glass which hardenes the surface of the material

If you have any specific question regarding the coating let me know.

good luck