Bluing (other)
Bluing (steel) is a passivation process in which steel is partially protected against rust Bluing may also refer to: * Bluing (fabric), a blue dye used to improve the appearance of fabrics * Bluing (hair), a blue dye used to improve the appearance of hair * "bluing" of machine parts to check for tolerances, see engineer's blue See also * Bluey (other) * Blued (other) * Blue (other) Blue is a color. Blue may also refer to: Places * Blue, Arizona, an unincorporated community in the United States * Blue, Oklahoma, an unincorporated community in the United States * Blue, West Virginia, an unincorporated community in the Unit ...

Bluing (steel)
Bluing, sometimes spelled as blueing, is a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish. Bluing involves an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite (), the black oxide of iron. In comparison, rust, the red oxide of iron (), undergoes an extremely large volume change upon hydration; as a result, the oxide easily flakes off, causing the typical reddish rusting away of iron. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. In colloquial use, thin coatings of black oxide are often termed "gun bluing", while heavier coatings are termed "black oxide". Both refer to the same chemical process for providing true gun bluing. Overview Various processes are used ...
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Bluing (fabric)
Bluing, laundry blue, dolly blue or washing blue is a household product used to improve the appearance of textiles, especially white fabrics. Used during laundering, it adds a trace of blue dye (often synthetic ultramarine, sometimes Prussian blue) to the fabric. Uses White fabrics acquire a slight color cast after use (usually grey or yellow). Since blue and yellow are complementary colors in the subtractive color model of color perception, adding a trace of blue color to the slightly off-white color of these fabrics makes them appear whiter. Laundry detergents may also use fluorescing agents to similar effect. Many white fabrics are blued during manufacturing. Bluing is not permanent and rinses out over time leaving dingy or yellowed whites. A commercial bluing product allows the consumer to add the bluing back into the fabric to restore whiteness. On the same principle, bluing is sometimes used by white-haired people in a blue rinse. Bluing has other miscellaneous hous ...
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Bluing (hair)
A blue rinse is a dilute hair dye used to reduce the yellowed appearance of grey or white hair. The blue rinse gained popularity after Jean Harlow's appearance in the 1930 film '' Hell's Angels''. Queen Elizabeth the Queen Mother also contributed to the popularity of the blue rinse in the 1940s. Israeli politician Benjamin Netanyahu uses the style. In British politics, the term "Blue Rinse Brigade" has been used to refer to affluent older women involved in conservative politics, charity work, and committees. See also * Blue hair Blue hair does not naturally occur in human hair pigmentation, although the hair of some animals (such as dog coats) is described as blue. Some people (typically of East Asian descent) are born with black hair that is so dark that it appea ... References Hair coloring {{culture-stub ...
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Engineer's Blue
Engineer's blue (also known as scraping blue, Prussian blue, or simply bluing) is a highly pigmented paste used to assist in the mating of two or more components. History Joseph Whitworth popularized the first practical method of making accurate flat surfaces, during the 1830s, by using engineer's blue and scraping techniques on three trial surfaces. Prior to his scraping technique, the same three plate method was employed using polishing techniques, giving less accurate results. This improvement led to an explosion of development of precision instruments using these flat surface generation techniques as a basis for further construction of precise shapes. Preparation Engineer's blue is prepared by mixing Prussian blue with a non-drying oily material (for example, grease). The coloured oil is rubbed onto a reference surface, and the workpiece is then rubbed against the coloured reference; the transfer (by contact) of the pigment indicates the position of high spots on the work ...
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Bluey (other)
Bluey may refer to: People * Bluey (nickname), a list of people with the nickname. * Bluey Adams (1935–2019), Australian rules football player. * Bluey Wilkinson (1911–1940), Australian speedway rider. * Robert Bluey (born 1979), American conservative blogger and journalist. * Bluey, the stage name of Jean-Paul Maunick, British guitarist, bandleader, composer, and record producer. Television * ''Bluey'' (TV series), a 2018 Australian animated children's television series: ** Bluey Heeler, titular protagonist of the series. ** '' Bluey: The Album'', a 2021 soundtrack album for the series. ** '' Bluey: The Videogame'', a 2023 video game based on the series. * ''Bluey'' (1976 TV series), an Australian police drama television series. Other uses * Slang term for an Australian Cattle Dog. * Bluey (long-lived dog) (1910–1939), certified by Guinness World Records as the world's longest-living dog. * "Bluey the Walrus", a character in the 1997 video game '' Diddy Kong Racing ...
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Blued (other)
Blued may refer to: * Bluing (steel), a type of finish * blued (macOS) * Blued (app) See also * * Bluing (other) * Blues (other) * Bluey (other) * Blue (other) Blue is a color. Blue may also refer to: Places * Blue, Arizona, an unincorporated community in the United States * Blue, Oklahoma, an unincorporated community in the United States * Blue, West Virginia, an unincorporated community in the Unit ...