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De-burring and polishing Inconel
My company is currently machining a product out of Inconel 718 unfortunately I can not show you what the product looks like because we are making this product for another company under license, however the item is around 25'' long, 4'' in diameter and has series of grooves and milled pockets. The problem we currently have now is that there is a lot of de-burring to be done, this is matriculas and a time consuming job. We are currently using a small pencil grinder with a stone burr. I believe that the resin-bonded points should be of regular aluminium oxide brown (is this correct?). The points that I require are a ball (10mm dia) and a tapered (10mm dia) but am having a hard time finding them in the required bond. I am able to get them made up but would much prefer to get them 'of the shelf' the next question is how would I go about polishing the item to a bright finish?
David MillerProduction Engineer - Perth, W.A, Australia
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Can't help you with the grinding supplies; however, just wanted to suggest you look at spin or drag finishing these parts. From the part size and weight, I think this part would be an excellent candidate for that process provided there is some reasonable quantity.
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AF Kenton Huntingdon Valley, Pennsylvania |
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To follow up on Tony Kenton's comment, it might also be possible to produce needed edge finishing by fixturing the part inside a tub shaped vibratory finish machine. This would have atendency to increase the force of media to part surface contact and would facilitate the use of smaller media, if needed for feature access. Uniform processing coverage might require some measure of in-process or mid-process part positioning on the fixture.
David A. Davidsonfinishing specialist - Spokane, Washington