Ferro Calcium Aluminum Cored Wire (CaFeAl)

Ferro Calcium Aluminum Cored Wire (CaFeAl) is another type of cored wire used in the steelmaking process. It is made by encapsulating a core of calcium, aluminum, and iron powders inside a steel sheath, which is then coiled into a wire.

When the CaFeAl cored wire is injected into the molten steel, the steel sheath melts and releases the core materials. Calcium and aluminum react with the oxygen and sulfur present in the steel, forming calcium oxide and aluminum oxide, which are then removed as slag. The remaining iron in the core reacts with the steel, helping to remove any remaining impurities and improving the overall quality of the steel.

The use of CaFeAl cored wire has several advantages over other methods of adding these elements to steel. First, it allows for precise control over the amount of calcium and aluminum introduced into the steel, which can improve the consistency and quality of the final product. Second, it can reduce the amount of waste generated in the steelmaking process, as only the amount of materials needed is added. Finally, the use of cored wire can reduce the overall cost of steel production, as it is often less expensive than other methods of adding calcium and aluminum.

Composition:

Calcium (Ca): 20-60%

Aluminum (Al): 5-20%

Iron (Fe): 25-60%

Carbon (C): <0.5%

Sulfur (S): <0.05%

Other trace elements: <0.5%

Wire diameter: 9mm - 13mm

Coil weight: 1000kg - 2000kg

Density: 6.5g/cm3

Melting point: 1100°C - 1400°C

Core material shape: Powder

Sheath material: Steel