The Shop > Finishing
Parkerising technique
Pete W.:
Hi there, all, :wave: :wave: :wave:
Nobody has answered the question in my earlier post - does this process cause the component to 'grow'? :scratch: :scratch: :scratch:
For example, if the part has a screw thread, do you have to mask it to preserve the fit?
Sid_Vicious:
Since parkerizing is used a lot on guns I don't think the parts grow much, The toleranses on weapons is pretty close so that should not cause problems.
redshift:
As it happens I will be doing a few items at the back end of next week , I will measure carefully
and report back.
Regards
Dave
Pete W.:
Sid & Redshift,
Thank you both.
PekkaNF:
--- Quote from: Pete W. on September 28, 2013, 10:45:21 AM ---Hi there, all, :wave: :wave: :wave:
Nobody has answered the question in my earlier post - does this process cause the component to 'grow'? :scratch: :scratch: :scratch:
For example, if the part has a screw thread, do you have to mask it to preserve the fit?
[/quoten]
I haven't measured any samples yet, but one manual says roughly "100C 20 minutes phosphating will make 0,005 - 0,010 mm thick layer" and barel is plugged. Bluing at 150C 30 min will etch 0,001 - 0,005 mm. Phosphating will increase dimensions and bluing will decrease. Now, those are linear dimensions, I would think that threads and edges are more prone to etching...but often corners are starved on additional methods...Hmm :coffee: This needs an experiment. I can not guess it offhand.
Pekka
--- End quote ---
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