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Niter and colour case. In the nitre bluing process, polished and cleaned steel parts are immersed in a bath of molten salts—typically potassium nitrate and sodium nitrate (sometimes with 9.4 grams (0.33 oz) of manganese dioxide per pound of total nitrate). The mixture is heated to 310 to 321 °C (590 to 610 °F) and the parts are suspended in ...
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 workpiece or conversely highlight low points. [1]
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
Olena Ruban/Getty Images. 4. Incompatible: Taurus and Aquarius. The zodiac’s bull is stable and predictable, especially in matters of the heart.That can spell romance and reliability for some ...
A nitre bed is a similar process used to produce nitrate from excrement. Unlike the leaching-based process of the nitrary, however, one mixes the excrements with soil and waits for soil microbes to convert amino-nitrogen into nitrates by nitrification. The nitrates are extracted from soil with water and then purified into saltpeter by adding ...
The clock is ticking for families hoping to send letters to Santa Claus at the North Pole this holiday season. Letters need to be postmarked by Monday, a spokesperson for the U. S. Postal Service ...
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Here are three steps. 4. 'Winning and losing is for the kids. It's not for the adults and parents' We have all gotten things wrong as parents. “How much time you got?” Orlovsky said when I ...