Cored wire is used to inject alloy additions into molten steel, especially for calcium treatment. It provides improved calcium recovery and better control of the addition process.
The cored wire consists of an outer sheath 4 in steel and an intermediate layer 10 comprising iron powder. The intermediate layer is surrounded by an extruded bar 8 in calcium having industrial purity of at least 98.5%.
Ferroalloys are a group of iron alloys that have significant content of one or more other metal elements. These are smelted from ore, mainly in electric furnaces. Besides being essential raw materials for steelmaking, they have other applications as well.
Almost all types of steel are manufactured from ferroalloys. It is not possible to produce any grade of steel without these ingredients. They play a crucial role in the steelmaking process, providing deoxidation, desulphurization and alloying capabilities.
Core wire is a new treatment in the secondary steelmaking developed in recent years. It can purify the shape of the inclusions in molten steel, change their nature and shape, improve casting state and castability of the steel, significantly improve the steel performance and cut down the alloy consumption.
High-carbon ferromanganese is the most consumed ferroalloy worldwide and it is mainly used in the production of welded pipes. It can increase the resistance to alkalis and acids such as sulfuric and hydrochloric acid, and improve the corrosion of welding electrodes.
In metallurgical applications, alloy cored wire can be inserted into the steel melting furnace by using a wire feeding machine. Generally, it has a steel sheath and a calcium or iron core. Its advantage is that it can be used to inject easily oxidized elements or trace elements into the molten steel, which can prevent short-term deoxidation and improve steel quality.
The calcium iron cored wire produced by Anyang huatuo Metallurgy Co., Ltd. uses a mixture of 28%-35% calcium particles and 65%-72% iron powder for the core material, which is wrapped with a cold-rolled low-carbon steel strip as the sheath. The sheath can help reduce the calcium evaporation rate and decrease the overall production costs.
It can also be used to improve the quality of the molten steel, avoid blockage of the nozzle, and reduce and eliminate the slag formation process. It is widely used in steelmaking and iron casting. Its adsorption efficiency is high, and it can effectively play the role of pure molten steel in the production process.
Cored wires are used in the steelmaking process for deoxidation, desulfurization, inclusion modification and other functions. They can be injected smoothly into liquid steel using a wire feeding machine and the alloys contained in the core can be fine-tuned to improve the yield of metals and rare earth elements and to reduce the amount of precious elements added.
It has high deoxidation efficiency, improves molten steel quality and avoids secondary oxidation. In addition, it can also effectively prevent nozzle blockage of continuous casting steel.
The global cored wire market is divided into several segments based on type, applications, and region. The types include Calcium Silicide Cored Wire (CaSi), Calcium Solid Cored Wire, Ferro Calcium Cored Wire and others. The market is segmented by application into Steelmaking and Iron Casting. The report also covers the competitive landscape of the market, key players, major collaborations, merger & acquisitions, trending innovation, and business policies. The report provides a comprehensive analysis of the current market trends and future prospects for the forecast period from 2017 to 2022.
In order to reduce the consumption of calcium metal in steelmaking, cored wires were invented. They consist of a calcium core wrapped with a low carbon strip. They are widely used in electric arc furnaces and oxygen furnaces for deoxidation purposes. The calcium in the core reacts with the oxides in the slag to generate calcium aluminates, which can separate the steel from impurities and make it easier for the operator to remove the slag.
The cored wire also makes it possible to put the powder additive package (deoxidizer, desulfurization agent, inoculant, alloy) into molten steel more effectively. It can improve the quality of molten steel and reduce the treatment cost. In addition, the pure solid calcium wire avoids uneven mixing of the iron powder with slag and air when feeding, thus greatly improving its efficiency. This enables the calcium to enter the deeper position of molten steel and react faster, and reduces power leakage.
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