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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 this solution with wire.
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 ...
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
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Near-net-shape is an industrial manufacturing technique. As the name implies, the initial production of the item is very close to the final, or net , shape. [ 1 ] This reduces the need for surface finishing .
TikToker Amelia Montooth said in a video that the conversation around Sweeney’s body was reminding her of a more fatphobic time in society — aka, the “deranged” early ’00s — which she ...
Surprisingly, it wasn't difficult for me to select my No. 1 country — Spain has always been near and dear to my heart. Again, I may be biased. It's where I lived as a child and studied abroad ...
Strength training. She combines all that swimming with strength training.She says that she gets in the weight room twice a week for 30 minutes each time, with a primary focus on her shoulders and ...