Ca Cored Wire

The pure calcium cored wire is mainly used for Al-killed steel.

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Due to its low density, low boiling point and high oxidability, calcium needs to be released near the ladle bottom in order to have the best recovery.

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Calcium is used to transform alumina into low melting point calcium-aluminates, avoiding nozzle clogging as well as to control the shape of oxide and sulfide inclusions.

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The advantages as below:

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Eliminate alumina nozzle clogging, spheroidize oxide and sulphide inclusions which increases the transverse toughness and strength of steel. Improve steel purity. Avoid silicon addition.