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-----Copper washer surface smoothening and removal of oxidation marks
August 22, 2008
We are looking for a solution to the following situation requiring polishing on copper washers and acheiving long term prevention of oxidation :-
Material : Copper Tube (Grade : Oxygen Free High Conductivity Copper
99.99% pure)
Dimensions : OD : 2.50mm ; Wall thickness : 0.3mm ; Length :
5.5mm.
Process Requirement : we would like to achieve the following results
:-
1....to remove the cutting-burs (very few) on the edges.
2....To remove the splinters/burs (very few) from inside the tubes.
3....To remove oxidation / stain marks from the surface
4....To achieve smooth & long-lasting shining surface preventing re-occurrence of surface oxidation.
Important ! the copper tubes are intended to be used in implantable Medical devices, hence only suitable chemicals / processes should be used.
We request your advice on the following :-
A.....Ideal cleansing, deburring & polishing equipment.
B.....Suitable cleansing / polishing agents matching the above technology.
Best wishes,
Sunil
employee - Jaipur, Rajasthan, India
Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).
Because your part are very thin, I think your best application is to use a mass finishing vibratory machine system using a treated dry organic polishing media. There is still some possibility of media getting stuck in the I.D.; however, that problem can be reduced by making sure it is very dry and a fine size. The longer you leave it in, the finer the smoothness and polish, but this might take 24 hrs. at a reduced amplitude.
AF Kenton
retired business owner - Hatboro, Pennsylvania
August 25, 2008
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