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IndustryArena Forum > MetalWorking > Moldmaking > Anybody use nitriding to harden molds?
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  1. #1
    Join Date
    Jun 2008
    Posts
    262

    Anybody use nitriding to harden molds?

    Hello. I have 4140 half hard molds. They exhibit too much wear, likely from inexperienced operators.
    Has anyone ever used plasma nitriding to give a good hard skin to this, or any steel?
    Warping of course is my big concern.

  2. #2
    Join Date
    Jun 2015
    Posts
    4131

    Re: Anybody use nitriding to harden molds?

    hy i did not used nitring, but chroming

    also, wear on some big hard parts, was fixed with additive metalization, then refreshing the surface / kindly
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  3. #3
    Join Date
    Jun 2008
    Posts
    262

    Re: Anybody use nitriding to harden molds?

    Thanks a lot Deadly, I make molds but only with rotary tooling, not much EDM.
    Therefore, I can't work with totally hard metal, like Rockwell 55 C.
    I would like to use 4140 hardened to 32 HRC and treat the surface.
    Has anyone needed this? Obviously the surface treatment would be done after almost all the machining is done, except for polishing.
    Also obviously, warpage is really a dealbreaker.
    Any mold makers out there??
    Thanks,
    Nelson
    i build the braces that keep american teeth straight......tick tick tick

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