Coating for insert holders

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Thread: Coating for insert holders

  1. #1
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    Default Coating for insert holders



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    Gold Member Jim Dawson's Avatar
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    Default Re: Coating for insert holders

    One that I have looks to be hard chromed, the others look like a black oxide finish. Gun bluing maybe?



    Jim Dawson
    Sandy, Oregon, USA


  3. #3
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    Default Re: Coating for insert holders

    The appearance is right for gun bluing Jim Dawson, but I've done my own cold bluing at home, and didn't find it very durable. Maybe it would be OK as long as it was only used in conjunction with well-maintained coolant.

    Whatever it is that they do to commercial tooling seems to stand up to coolant even if it's mixed too thin. I've seen machines that get a bit of surface rust on the turret, table, or way covers, but the tooling never gets any rust. I've always wondered if it's more the coating, or the alloy it's made of. I'd love to get some insight from anybody who knows!



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