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Rust bluing is also used on shotgun barrels that are soldered to the rib between the barrels, as hot bluing solutions melt the solder during the bluing process. Large scale industrial hot bluing is often performed using a bluing furnace. This is an alternative method for creating the black oxide coating.
Hot black oxide for stainless steel is a mixture of caustic, oxidizing, and sulfur salts. It blackens 300 and 400 series and the precipitation-hardened 17-4 PH stainless steel alloys. The solution can be used on cast iron and mild low-carbon steel.
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.
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
Japan industry minister Yoji Muto said on Wednesday the nation has requested that the United States exempt Japan from steel and aluminium tariffs. U.S. President Donald Trump substantially raised ...
A phosphate coating is usually obtained by applying to the steel part a dilute solution of phosphoric acid, possibly with soluble iron, zinc, and/or manganese salts. The solution may be applied by sponging, spraying, or immersion. [6] Phosphate conversion coatings can also be used on aluminium, zinc, cadmium, silver and tin. [7] [8]
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