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  • Users: neets
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  1. neets

    case hardening!!

    the material being used is 16MnCr5, which is a case hardening steel. c - 0.14 to 0.19 mn-1.0 to 1.3 s- 0.04 max cr- 0.8 to 1.1 application can be like shakle bolt. requirement of case depth can be 0.5 +/- 0.2 and HRC 58-63 A SUITABLE process if u could high light.
  2. neets

    case carburising

    In addition to the same, Its gas carburising and i would like to know today what are the methods and instruments available to measure carbon concentration and the set points. please tell me the expensive as well as non expensive ones? suitable for which kind of furnace(s)? what is generally...
  3. neets

    case carburising

    this is in addition to the same question with some more doubts!!! the heat treatment given was 920deg C 2hrs 30 mins, 840 deg 45 minutes, oil quench!! i have retained austenite > 50% till 0.3mm depth and carbide network till 0.1mm, what could be done to reduce the retained austenite and...
  4. neets

    Nitrocarburising

    Hi all, i want to know various methods of nitrocarburising on SAE 4140 with the required compound zone of 10 -20 microns. What is the possibility of achieving the compound zone. What are the factors effecting distortion? Does the profile of component matter? how much porosity can be...
  5. neets

    case hardening!!

    how does a double quench and single quench method for case hardening, effect the properties of the material. In what cases double quench is preferred? What is the difference in microstructure expected for each case as: 1) carburising 920 for 2 hrs: 840 deg C for 45 min: oil quench 2)...
  6. neets

    case carburising

    hello all, i have written this query before but due to technical problem with login i couldn't view the opinions. so here it is again This is specific to case hardening of 16MnCr5, what could be the probable reasons for getting retained austenite and carbide networks in the case. the required...

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