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  2. Case-hardening - Wikipedia

    en.wikipedia.org/wiki/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. Iron which has a carbon content greater than ~0.02% is known as steel .

  3. California Department of Food and Agriculture - Wikipedia

    en.wikipedia.org/wiki/California_Department_of...

    The California Department of Food and Agriculture (CDFA) is a cabinet-level agency in the government of California.Established in 1919 by the California State Legislature and signed into law by Governor William Stephens, the Department of Food and Agriculture is responsible for ensuring the state's food safety, the protection of the state's agriculture from invasive species, and promoting the ...

  4. International Food Protection Training Institute - Wikipedia

    en.wikipedia.org/wiki/International_Food...

    The International Food Protection Training Institute is an initiative of the Global Food Protection Institute, a 501 (c) (3) non-profit organization driving the adoption of food-protection policies and practices for a safer global food supply. Its mission is to improve public health and reduce mortality, morbidity, and economic costs associated ...

  5. Carburizing - Wikipedia

    en.wikipedia.org/wiki/Carburizing

    Early carburization used a direct application of charcoal packed around the sample to be treated (initially referred to as case hardening), but modern techniques use carbon-bearing gases or plasmas (such as carbon dioxide or methane). The process depends primarily upon ambient gas composition and furnace temperature, which must be carefully ...

  6. Solid solution strengthening - Wikipedia

    en.wikipedia.org/wiki/Solid_solution_strengthening

    Surface carburizing, or case hardening, is one example of solid solution strengthening in which the density of solute carbon atoms is increased close to the surface of the steel, resulting in a gradient of carbon atoms throughout the material. This provides superior mechanical properties to the surface of the steel without having to use a ...

  7. Heat treating - Wikipedia

    en.wikipedia.org/wiki/Heat_treating

    The case depth can be specified in two ways: total case depth or effective case depth. The total case depth is the true depth of the case. For most alloys, the effective case depth is the depth of the case that has a hardness equivalent of HRC50; however, some alloys specify a different hardness (40-60 HRC) at effective case depth; this is ...

  8. Case hardening of rocks - Wikipedia

    en.wikipedia.org/wiki/Case_hardening_of_rocks

    Case hardening is a weathering phenomenon of rock surface induration. It is observed commonly in: felsic alkaline rocks, such as nepheline syenite , phonolite and trachyte ; pyroclastic rocks , as pyroclastic flow deposit, fine air-fall deposits and vent-filling pyroclastic deposits; sedimentary rocks , as sandstone and mudstone .

  9. Food safety - Wikipedia

    en.wikipedia.org/wiki/Food_safety

    Food safety (or food hygiene) is used as a scientific method/discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness.The occurrence of two or more cases of a similar illness resulting from the ingestion of a common food is known as a food-borne disease outbreak. [1]