It is also known by the name cored wire. The main use of this wire is as an auxiliary for the steel smelting. It can enhance steel quality through the removal of harmful elements like oxygen, nitrogen, and sulfur. It can be used for desulfurization and deoxidation in the smelting of electric arcs furnaces (EAF).
The use of cored steel in EAF melting reduces metallic calcium consumption by 30 percent and conserves resources and energy. A reduction in the pollution caused by the molten metal and protection of the environment is also achieved. Due to the complexity of the cored-wire structure and the high standards for its manufacture, handling, transporting and storing it requires strict protocols. It will guarantee the correct operation and optimum result of EAFs with cored-wire.
LS Ferroalloy's cored wire production is outstanding and we can find you the ideal solution. With our rich experience in production and a team of professional technicians, we are able to deliver cored-wire products that meet the highest standards and can be transported and stored safely.
Cored wires with conventional construction are produced by forming the sheath of a steel strip made from low-carbon, cold-rolled steel and adding calcium metal powder to it in a molding. Sheaths, which are typically about 0.4mm in thickness, are then sealed with hooks. The type of steel used, the production method and smelting condition will determine the quality of both the sheath as well as the alloy powder. The purity of sheath determines the effectiveness of adding the calcium metal.
It is also tightly welded to ensure that the cored wire does not come into contact with atmospheric gases. It is not possible to expose the atmospheric gases and air to cored calcium wire, as it is tightly welded. During the welding procedure, cored calcium is continuously supplied. Service life can also be extended by up to three or five times compared with conventional solid Calcium wires.
Hi-Cal (r)'s sheath, made of calcium, is adhered to the steel with special welding technologies. Its thickness is four times as much as the sheath of conventional cored wires. It allows for a more uniform, accurate and faster injection of calcium into the steel molten. This also allows for an increased yield in the smelting processes and reduces the atmospheric gasses, protecting the environment while ensuring worker safety. The metallurgical trials on the Hi-Cal(r), and conventionally cored, calcium treatments proves that this treatment can improve steel quality while saving energy and resources. Hi-Cal (r) is able to increase the yield of deoxidizer, reduce the nitrogen and sulfur content of the steel molten, as well as prevent excessive Si pick up from the slag. Steel plants can save money and time by using this product.
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