The demand for cored wire is closely tied to steel production, and growth in global steel production is one of the main driving forces for the market. Construction projects, manufacturing, and other steel-related activities lead to increased steel production and the need for cored electrodes. Cored wire technology advancements also increase efficiency in steelmaking and enhance the performance cored electrodes. The result is a higher quality steel product and lower costs.
A cored steel wire is a pure metallic calcium wire that has been encapsulated within a steel jacket for use in deoxidation. Desulphurization. and inclusion modifcation in the manufacturing process. The cored wire is added to the molten metal in order to decrease the viscosity, which improves the cast quality and lowers the melting point. It is also used to reduce the reactivity of slag and lower the temperature at the bottom of the ladle.
A pure calcium cored cable has low oxygen levels and a high level of purity, so it is less likely to produce oxides in the casting process. This reduces the chance of oxidation, which can lead to a decrease in production cost. In addition, the pure metal calcium cored wire can also prevent slag precipitation in the molten steel. It is particularly useful to steelmakers who work in areas with high levels of sulphur.
Since it entered slack season and influenced by environmental protection factors, the demand for cored wire has decreased significantly. The order quantity from downstream has declined, and the operation rate of some manufacturers has fallen. However, the price of pure calcium cored wire has not been affected. The prices of steel cold rolled sheet and metal calcium wire remain unchanged.
Metal calcium deoxidizes well, however, it is light in specific gravity, has a low boiling and melting points, and can easily produce bubbles when heated to high temperatures. The calcium metal powder will ignite and can't reach the higher and deeper positions in the molten alloy to cause reaction. In order to overcome this problem, cored cable was created.
Early in 1970, foreign steel plants developed the world's first calcium-cored pure wire. Later, this wire was also introduced to China. The use of this material for the treatment of molten stee is now widespread. Steel plants around the globe use a lot of pure calcium-cored wire. The wire can easily be used to clean up impurities from molten iron and enhance the quality of steel finished products.
The cored wire can help the alloy deoxidizer penetrate into the molten steel to react with the metal elements in the liquid steel, thereby reducing the content of oxygen and sulfur in the molten steel and increasing the yield of precious metal elements in the final product. Also, it can refine the composition of steel molten and increase its strength. It also helps reduce the quantity of raw materials needed to smelt steel.
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