Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, and rust or scale from ferrous metals, copper, precious metals and aluminium alloys. A solution called pickle liquor, which usually contains acid, is used to remove the surface impurities.
Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, and rust or scale from ferrous metals, copper, precious metals and aluminium alloys. A solution called pickle liquor, which usually contains acid, is used to remove the surface impurities.
Source: Wikipedia "Pickling (metal)" · CC BY-SA 4.0
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