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  2. Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(steel)

    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 ...

  3. ISO 10628 - Wikipedia

    en.wikipedia.org/wiki/ISO_10628

    ISO 10628 Diagrams for the chemical and petrochemical industry specifies the classification, content, and representation of flow diagrams. It does not apply to electrical engineering diagrams. ISO 10628 consists of the following parts: Part 1: Specification of Diagrams (ISO 10628-1:2014) [1] Part 2: Graphical Symbols (ISO 10628-2:2012)

  4. Bluing - Wikipedia

    en.wikipedia.org/wiki/Bluing

    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

  5. Niter - Wikipedia

    en.wikipedia.org/wiki/Niter

    Niter or nitre [5] is the mineral form of potassium nitrate, KNO 3.It is a soft, white, highly soluble mineral found primarily in arid climates or cave deposits. Historically, the term niter was not well differentiated from natron, both of which have been very vaguely defined but generally refer to compounds of sodium or potassium joined with carbonate or nitrate ions.

  6. The top 7 mental health challenges of the holidays and how to ...

    www.aol.com/top-7-mental-health-challenges...

    2. Overwhelm and Burnout. There's never a shortage of things to do this time of year. The whirlwind of holiday tasks—shopping, cooking, decorating, planning, cleaning, hosting—can easily lead ...

  7. Talk:Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Talk:Bluing_(steel)

    The process of heating steel after it has been hardened, known as tempering, can impart colors to steel ranging from pale yellow "straw" to very light blue. When done for decorative purposes it can be referred to as "Fire bluing", see the article on tempering for pics and more.

  8. Boomers are sad they may never be grandparents as fewer ... - AOL

    www.aol.com/finance/boomers-sad-may-never...

    The birth rate in America has long been on a decline, with the fertility rate reaching historic lows in 2023. More women between ages 25 to 44 aren’t having children, for a number of reasons.

  9. Bitcoin races past $100,000, fueled by post-election rally - AOL

    www.aol.com/bitcoin-races-past-100-000-184139861...

    The price of bitcoin surpassed $100,000 for the first time on Friday, soaring to a fresh high as the world’s largest cryptocurrency extended a rally set off by the election of former President ...