Seamless Pure Calcium Cored Wire With High Quality

Seamless pure calcium cored wire is a kind of product widely used in the steelmaking field, which is mainly used to purify molten steel, improve its performance and improve its cleanliness. Specifically, the seamless pure calcium cored wire is made of a mixture of 25-35% calcium particles and the rest iron powder as the cored material by a specific process.

In the steelmaking process, a certain amount of oxygen will be dissolved in molten steel, reducing steel's mechanical properties and corrosion resistance. By adding seamless pure calcium cored wire to molten steel, calcium can react with oxygen in molten steel to generate oxides insoluble in molten steel, thus achieving the purpose of deoxidation. This method can effectively remove dissolved oxygen from molten steel and improve the purity of steel.

Sulfur is one of the harmful elements in steel, which will lead to "hot brittleness" of steel and reduce its plasticity and toughness. Calcium in the seamless pure calcium cored wire can react with sulfur in molten steel to generate calcium sulfide, which is a compound with high melting point and can be removed in the subsequent smelting process, thus achieving the purpose of desulfurization. Moreover, in the process of steelmaking, some nonmetallic inclusions, such as alumina and manganese sulfide, will inevitably be produced in molten steel. These inclusions will affect the mechanical properties and machinability of steel. By adding seamless pure calcium cored wire to molten steel, calcium can react with these inclusions to generate compounds that are easier to exclude, such as calcium aluminate and calcium sulfide, to achieve the denaturation treatment of inclusions.

The application of seamless pure calcium-cored wire has obvious advantages. Firstly, because of the seamless design, the core material of calcium wire is not easy to oxidize, thus ensuring calcium yield and stability. Secondly, the seamless pure calcium cored wire has good feeding depth and small splash, which can control the addition of calcium more accurately and improve the smelting effect. In addition, the production cost of seamless pure calcium cored wire is relatively low, and the shelf life is long, which can meet the long-term demand of iron and steel enterprises.

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