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  1. MATTHEWZHI

    vacuum carburizing VS surface carbon content

    Hi Mfgenggear: Norminal .006" material will be removed from gear teeth surface. We sent carbon gradient bar out for surface carbon check. Actually this surface does not mean real surface. Lab has to machine .002-.005" off before they get chips from sample. We used vacuum carburizing method at...
  2. MATTHEWZHI

    carburizing vs carbides check location

    Hi Redpicker, Thank you for your quick response. Do you know any specificaiton specify that? Thanks, Matthew
  3. MATTHEWZHI

    carburizing vs carbides check location

    Hello every expert: A lot of specifications, such as AMS 2759/7 state to check case depth at pitch diameter, or far away from canners etc. But for carbide check, they never mention check locations (I assume specifications require to check everywhere). Sometimes carbides exceed the limits from...
  4. MATTHEWZHI

    vacuum carburizing VS surface carbon content

    Hello every expert: We had one issue when we vacuum carburized 9310 gears.The case depth required is .019-.022" from customer. The surface carbon content required is 0.70-0.90wt%. We used 0.5"DIAx6" carbon gradient sample to check surface carbon content. The result was 0.64wt% when using...

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