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  • Users: Kennethhp
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  1. Kennethhp

    Compound layer of gasnitrided steel spalls ?

    Hello ! Where i work we have an issue i been involved in (It has been seen maybe 5 times over the last 5 year) We do a pretty standard gas nitriding process at 520 degrees celcius with NH3. We pre oxidize the parts at 400 degrees before nitriding the parts. For some reason after treatment, it...
  2. Kennethhp

    Odd apearence in the microscope.

    Hello ! This is not about materials, but hopefully some of you have seen this before when looking into microscopes. Here where I am an intern we have an old Carl Zeiss Jena microscope that im using regularly. Out of nowhere, yesterday, some dark shades appeared over the screen. I have tried to...
  3. Kennethhp

    Case Hardening trouble

    Hello all! Im an intern at a heat treatment facility as a mechanical engineer. (non english speaking so sorry for typo-o's :) I have a task which is causing alot of trouble in our case hardening department. A costumer is producing different sizes axels in 20MnCr5. When one certan size axel is...

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