Pure Calcium Cored Wire Productions are widely used by iron and steel industries of medium and large scale. The metal calcium powder is tightly wrapped around the low carbon strip. The wire is used primarily in oxygenation, denaturing and deoxidation treatments of molten iron. It is used to reduce the quantity of precious materials added to molten iron, while also improving the uniformity in the quality. The process can reduce nozzle blocking during casting as well as improve the final steel's strength.
Due to the thicker outer coating, the cored pure calcium wire can penetrate deeper into the molten iron. Additionally, it remains in the iron for longer, allowing it to improve the rate at which the molten alloy absorbs calcium. The wire can be used to reduce penetration into slag and the formation time of calcium bubbles. It also helps reduce evaporation of molten metal.
Moreover, it has a sheath that is weld so as to prevent the calcium from being lost or evaporated during the injection. It is also possible to inject calcium in the molten iron at the correct depth. The ferrostatic pressure generated by the encapsulation keeps the calcium liquid and at steel making temperature. CaFe and CaSi-cored wires are able to achieve a higher metallurgical efficiency, thereby reducing the amount of calcium injected.
After tapping steel in a BOF EAF or LOF the molten material is subjected a number refining procedures known as ladle metallurgy. They include deoxidation of inclusions and oxygenation. Traditionally, these additives were added by spraying or feeding them into the molten steel. Traditionally, this method was unstable and inaccurate. Now it's replaced with cored wires.
Comparatively to the old powder packed cored wires, the new calcium wire is far more stable. This improves the accuracy for the addition, as well as the overall reliability of ladle-metallurgy. This cored steel wire is able to be placed into molten steel and can be reused multiple times without breaking. It can also be operated more easily and with greater precision, thereby saving labor in the steel mills and improving production efficiency. The ladle can be used for oxygenation as well as denaturing the steel. This ensures that it is the best quality. Steels of superior quality can be produced for machinery, construction and oil pipes. The pretreatment process of steel moltens can be done with it, including desulfurizations, dephosphorizations and desiliconizations.
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