The cored steel wire is an alloyed steel wire widely used by the steel industry and foundries for their liquid metal treatments. This is a high-quality wire made from high purity silicon and calcium blocks, powdered silicon and calcium, with molten silicate as the outer sheath. It has good chemical and thermal resistance. In steel making it is mostly used to deoxidize and desulfurize. However, in cast iron manufacturing as an inoculant. The cored wire also helps to achieve the best metallurgical properties and mechanical characteristics of steel.
In molten refining of steel, it is possible to melt the calcium covering the cored wire and release its additives into the bath. The calcium is absorbed easier by the molten metal and additives are not lost. This is an extremely advantageous process and increases the efficiency of the steel casting and refining processes.
Cored wires are available in a wide range of sizes and shapes, depending on the application. Cored wires are usually composed of ceramics, magnesium or reactive metals. This is wrapped in steel mesh or a metal strip, then the whole system is enclosed within an airtight protective cover. The wire core can be of different material and coated.
In order to inject the additives at the right point, it is important that a few parameters are taken into account during the process of feeding a pure calcium-cored solid wire into the ladle. If the feeding speed is too fast, or slow enough, it will have an impact on the melting time of the calcium cored wire. The additives will then have a different metallurgical impact.
In addition, it is important to carefully control the depth at which the cored steel wires are injected into the steel bath so that they release the additives near the bottom. It is possible to reduce the accumulation of steel slag by reducing the loss of metal calcium. Additionally, higher feeding speeds will allow cored calcium wires to penetrate. It will increase the rate at which the calcium is used and improve the cast quality. To get the most out of cored wires, you must always follow the instructions in the manual, and pay attention to the molten state at all times. Cored wire operation can improve production, decrease defective products and reduce the operating cost of the steel mill.
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