Calcium silicon is mainly used in the field of steel refining. It acts as deoxidizer, desulfurization and inclusion modification agent to eliminate nozzle clogging, spheroidize oxide and sulphide inclusions and improve steel castability.
Cored wire is a kind of alloy cored wire processed by jet metallurgy technology. It consists of bright steel band coating layer and thin metal aluminium lamination.
A deoxidizer is a chemical additive used in steelmaking to remove oxygen and impurities such as sulfur and nitrogen from molten steel. Deoxidizers reduce the melting point of steel, so it can be melted at lower temperatures, resulting in reduced production costs.
Silicon calcium composite deoxidizer is a new type of alloy additive auxiliary material that has better steel purification and deoxidation effects than other conventional oxide removal agents. It is made from calcium, silicon and aluminum in an aluminum matrix and has an excellent reactivity with oxygen in the molten steel. It can remove oxygen from molten steel, change the form of non-metallic inclusions and improve the quality of casting iron and cast steel products.
Cored wire technology is a kind of new treatment in secondary steelmaking developed in recent years. It uses cored wire to put the alloy powders into molten steel, it can clean the molten steel more quickly, efficiently and economically. It also can change the inclusion form, improve the cast ability of metallurgy metals and reduce the slag.
In the steel making process, calcium silicon alloy can control the shape, size and distribution of oxide and sulfide inclusions improving fluidity, machinability, ductility and impact properties of the final cast iron. It can also be used as a desulfurizer in the deoxidization and spheroidization of liquid steel, as well as in creeping treatment and inoculation of cast iron.
The cored wire is inserted smoothly into molten iron or molten steel through a wire feeder, then melts at an ideal depth and physicochemical reaction occurs. It can purify the molten steel, change the inclusion form, improve the castability of steel and increase element yield.
Core wire technology is a new treatment in secondary steelmaking. It can increase the alloy performance function, reduce steelmaking cost, save energy consumption and reduce environmental pollution. It is also an ideal composite deoxidizer and desulfurizer. Cored wire can improve the anisotropy of molten steel, prevent nozzle clogging and achieve better casting results.
Inclusion engineering is an important aspect of steelmaking. However, understanding and controlling the effects of non-metallic inclusions (NMI) is a demanding task that requires close collaboration between physical metallurgy and process metallurgy.
In many cases, oxide inclusions exhibit plastic behavior at the working temperature of the steel. The resulting elongation along the major working directions introduces shape anisotropy in the properties influenced by the NMIs.
Core wire technology is a new treatment in recent years, which can purify the molten steel, change the inclusion form, improve castability and reduce the consumption of calcium sulfide. However, it is still not widely used in the industry because of its complicated production process.
Core wire is an advanced method to inject CaSi powder into the molten steel, eliminating variables such as core injection time, temperature and reactivity of the melt. Fig. 9 a shows the evolution of the simulated inclusion content at the steel sampling position during the soft stirring period for two total oxygen conditions.
The goal of metallurgical silicon metal production is to produce lightweight components without compromising their strength. Lighter components can save energy and reduce the amount of waste material produced. The market for metallurgical silicon metal is expanding due to increased automobile consumption in Asian countries.
Silicon calcium alloy is used as deoxidizer and desulfurizer in the liquid steel refining process to reduce harmful inclusions in the molten steel and improve casting properties. It also improves machinability and weldability, and is available in a variety of forms to meet customer needs.
The invention belongs to the technical field of metallurgical refining steel, and relates to a kind of real core metal calcium-aluminum core cabling wire and preparation method thereof. The new wire can greatly improve the molten steel refining efficiency and make sure the refining effect is stable. It also can effectively carry out anti-oxidation passivation treatment for the outer wrap layer of metal aluminum, and significantly extend its storage time.
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