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  2. Nitriding - Wikipedia

    en.wikipedia.org/wiki/Nitriding

    Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. These processes are most commonly used on ...

  3. Quench polish quench - Wikipedia

    en.wikipedia.org/wiki/Quench_polish_quench

    Quench polish quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. [1]

  4. Equifax Workforce Solutions - Wikipedia

    en.wikipedia.org/wiki/Equifax_Workforce_Solutions

    Equifax Workforce Solutions, formerly known as TALX (pronounced "talks"), is a wholly owned subsidiary of Equifax. [1] [2] [3] It is based in St. Louis, Missouri. [4]The company was originally founded in 1972 under the name Interface Technology Inc.

  5. Liquid nitriding - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitriding

    Liquid nitriding may refer to: Salt bath nitriding; Salt bath ferritic nitrocarburizing This page was last edited on 29 ...

  6. Carbonitriding - Wikipedia

    en.wikipedia.org/wiki/Carbonitriding

    Carbonitriding (around 850 °C / 1550 °F) is carried out at temperatures substantially higher than plain nitriding (around 530 °C / 990 °F) but slightly lower than those used for carburizing (around 950 °C / 1700 °F) and for shorter times.

  7. Ferritic nitrocarburizing - Wikipedia

    en.wikipedia.org/wiki/Ferritic_nitrocarburizing

    The gas used for plasma nitriding is usually pure nitrogen since no spontaneous decomposition is needed (as is the case of gaseous ferritic nitrocarburizing with ammonia). Due to the relatively low-temperature range (420 °C (788 °F) to 580 °C (1,076 °F)) generally applied during plasma-assisted ferritic nitrocarburizing and gentle cooling ...

  8. Case-hardening - Wikipedia

    en.wikipedia.org/wiki/Case-hardening

    Colt Peacemaker, showing discoloration from case-hardening. Case-hardening or carburization is the process of introducing carbon to the surface of a low-carbon iron, or more commonly a low-carbon steel object, in order to harden the surface.

  9. Cryogenic hardening - Wikipedia

    en.wikipedia.org/wiki/Cryogenic_hardening

    Cryogenic hardening is a cryogenic treatment process where the material is cooled to approximately −185 °C (−301 °F), typically using liquid nitrogen.It can have a profound effect on the mechanical properties of certain steels, provided their composition and prior heat treatment are such that they retain some austenite at room temperature.