![]() 2 is a schematic illustration of a twin-belt casting machine showing the continuous casting of a copper sheet. Aurubis produces up to 800 of these coils per day. 1 is a schematic illustration of a process of the invention for making copper cathode starting sheets, starting with refined copper which is melted, continuously cast, rolled and trimmed to form the starting sheet product. The continuous cast wire rod is now ready to be shipped to locations all over the world. After it is dried and treated with a protective wax coating, the rod is wound into coils with a weight of 3.5 to 8 t. The temperature is subsequently reduced to 40 ☌. The 400 to 500 ☌ wire is then surface-treated and cooled at a constant speed. Rod diameters between 23.5 mm and 8 mm can be attained by constantly reducing the cross-section of the rolled material. Still glowing red, the bar enters the rolling train, which consists of many roll stands. Although the casting processes are different, the product is the same: a roughly 900 ☌ endless copper bar. ![]() There are two main casting machine technologies: Hazelett casting machines for ContiRod (see Graphic 1) and casting wheels for South Wire® casting machines (see Graphic 2), both of which are utilized in the Aurubis Group. The 1,200 ☌ molten copper is then transferred via channels to the casting machine, the heart of the casting plant, where the copper is cast into an endless bar. These cathodes with a copper content of more than 99.99 % are first melted down in a cathode shaft furnace under strict process monitoring. ![]() The production process conforms to European and international standards and the product quality fulfills customers' stringent requirements.Īfter refining, copper is ready for further processing in its purest form, as a cathode. Copper cathodes are used as a raw material feed for the production of high purity copper and copper alloy products. Aurubis constantly controls, monitors and develops these efficient and energy-optimized processes within narrow limits. It is also commonly applied in brass mills where it is used for the casting of copper and alloy billets and slabs. In addition to high conductivity, Aurubis FOXROD is also resistant to hydrogen. It is produced from high-quality Aurubis cathodes that meet the LME Grade A standard with a copper content of more than 99.99. In both production methods, rod is produced in an integrated process that includes smelting, casting, rolling, cleaning and packaging. Continuous casting in the copper semis industry is not only limited to CCR production. Aurubis FOXROD is a directly cast, oxygen-free copper rod, which can also be low-alloyed depending on the customer's requirements.
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