101025_Heat_Treat_2_1

101025_Heat_Treat_2_1 - A closer look at Quenching Quench...

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Unformatted text preview: A closer look at Quenching Quench media speeds: Aqueous brine Water Synthetic quench Fast oil Conventional oil Forced air/ gas Still air/ gas Fast | | | | | Slow (high distortion) (low distortion, more expensive steels) 2 Moog proprietary and/or confidential data Quench and Temper Hardening •Only for Steel! •Medium to high carbon content 1 Moog proprietary and/or confidential data A closer look at Tempering 3 Moog proprietary and/or confidential data Case Hardening carburizing nitriding carbonitriding 4 Moog proprietary and/or confidential data Carburizing VS Nitriding Carburizing happens in the high temperature region. Nitriding happens in the low temperature region. 5 Moog proprietary and/or confidential data Carburizing •Soft part is put into carbon-rich atmosphere, diffusing C ions into the surface. Nitriding •Part is hardened first (Core hardened) Part is slow cooled, then machined Part is then quenched and tempered. Part is quenched without leaving the furnace. Then part is put into nitrogen-rich atmosphere, diffusing N ions into the surface. Part is tempered Deep, strong case Thin, hard case 6 Moog proprietary and/or confidential data Heat Treat Equipment: Thermocouples (0.51 – 0.59) Over Temperature Thermocouple Furnace Thermocouple Load Thermocouples 35 Moog proprietary and/or confidential data Heat Treat Equipment: Vacuum Furnace TUS 47 Moog proprietary and/or confidential data ...
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