Development status of cored wire technology

With the development of the steelmaking industry, good alloy steels and types of steels have increased significantly, the continuous casting ratio has gradually increased, and the refining skills outside the furnace have been continuously improved, which has promoted the successful development of wire feeding skills. The use of wire feeding technology has greater advantages than powder spraying and direct participation in alloy blocks.

The cored wire technology is an out-of-furnace technique developed on the basis of eruption metallurgy technology in the 1980s, and it has been widely used in steelmaking plants at present. The calcium alloy cored wire is quickly fed into the molten steel by means of a wire feeder, and melts and dissolves in the depth of the molten steel, which has the effects of deoxidation, desulfurization and doping; , and then improve the anisotropy of the steel; at the same time, the composition can be fine-tuned, so that the metal and rare earth elements can improve the yield, ensure the stability of the composition, reduce the refining cost, and the economic benefit is very obvious.

The core wire is a linear material. Due to the different core powder, the use and function of the core wire are also different. There are many varieties of cored wires in use now, and the specifications are also diverse. The wrapped core powder can be divided into single core powder and mixed core powder. With the development of the steelmaking industry, good alloy steels and types of steels have increased significantly, the continuous casting ratio has gradually increased, and the refining skills outside the furnace have been continuously improved, which has promoted the successful development of wire feeding skills. The selection of wire feeding skills has greater advantages than powder spraying and direct participation in alloy blocks.

Core-spun technology is an out-of-furnace refining technique that has emerged in recent years, and is widely used in wire feeding skills for modern steel refining. The alloy cored wire used in steel refining can purify molten steel, change the shape of inclusions, improve the castability and mechanical properties of molten steel, and can significantly improve the yield of ferroalloys and reduce the cost of steel refining, which is economical and reasonable. The wire feeding technology is a national 85 technology promotion project, which is widely used as a deoxidizer and a desulfurizer to change the shape of the inclusions in the steel and improve the quality.

Core-spun thread Sewing thread made of core-spun yarn. It is made of polyester filament as the core wire, and then covered with pure cotton, polyester staple fiber or viscose fiber. It is often wound into the shape of a buddha.

In this field, the powder core wire is generally called cored wire, mainly in three aspects: inoculation, out-of-furnace purification, and special element alloying.

The alloy cored wire used for steel refining can purify molten steel, change the shape of inclusions, improve the castability and mechanical properties of molten steel, and can significantly improve the yield of ferroalloys and reduce the cost of steel refining. The wire feeding technology is a national 85 technology promotion project, which is widely used as a deoxidizer and a desulfurizer to change the shape of the inclusions in the steel and improve the quality.