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IndustryArena Forum > MetalWorking > Diemaking / Diecutting > inserts to machine harden material
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  1. #1
    Join Date
    Mar 2008

    inserts to machine harden material

    I just got some parts heat treated but a am having a tuff time machining the material
    i need to open up the I.D about .020 .
    can you recommend any good inserts?

    thank you

  2. #2
    Community Moderator Jim Dawson's Avatar
    Join Date
    Dec 2013

    Re: inserts to machine harden material

    Normally finishing after heat treat is done by grinding or honing.

    Without a lot more information it would be impossible to recommend an insert. I wild guess would be CBN or diamond inserts.
    Jim Dawson
    Sandy, Oregon, USA

  3. #3

    Re: inserts to machine harden material

    I've machined HRC60 steel using std inserts on several occasions - such as ballnuts, toolholders and pullstuds. The inserts may not last as long as normal but the cost doesn't end up being silly. Some are better suited to interrupted cuts than others, so selection may be sensible in some cases.

    The skill is to run the lathe as fast as you possibly can. That way, the material softens as it cuts, which is the skill of it. It usually burns, too, so make sure there is nothing flammable nearby!

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