Core wire is a shapeless steel wire wrapped in alloy powder. It's possible to divide it into silicon wire, carbon wire, calcium iron cored wire, and pure calcium wire according to the different in the alloy powder. The wire core is in contact with the molten metal via a specially designed wire feeder, and plays the roles of deoxidation elimination of inclusions and desulfurization. Core wires can be used to fine-tune steel production, improve the amount of rare earths, precious metals as well as other components, as well as ensure their stability. The quantity of precious metals added can be reduced, and the price for refining is also lower.
Calcium is an alloy that's a great deoxidizer. However, due to its small specific gravity and melting temperatures, it can't be able to penetrate into the deepest part of the liquid steel. Incorporating it directly into melting steel can cause it to ignite and cause long sulfuric inclusions. This does not fit with the standard steelmaking process.
The alloy-cored steel wire was invented to solve the problem. The alloy cored wire is a stainless steel strip that has an outer calcium metallic coating as well as a metal-calcium core within. The sheath is made of cold rolled low carbon steel sheet, and the center is comprised of high purity calcium metal in granules. Sheaths are coated with an aluminum or zinc insulating coating that prevents the metal from burning. Sheaths are covered with an anti-oxidation coating, and cores with corrosion resistant nickel.
The advantages of the cored wire is that: 1. The cored wire can be fed at rapid speeds through the metal molten, accelerating the process of metallurgical transformation; It could reduce the amount of calcium in tons of steel, and enhance the quality of molten steel; 3. Sheaths possess a low rate of oxidation and have a tiny surface area. The power leakage is minimized, and the loss of calcium is reduced to 4. This can reduce the amount of contamination caused by the melting of steel and also the intake of calcium from tons of steel is significantly reduced.
The MINCAL EXCEL cored wire can be used for the calcium treatment of every kind of liquid steel, including Al killed as well as Al-Si murdered and Si murdered steels. The rate of recovery from calcium is greatly improved, resulting in reductions in the cost of treating calcium. Cored wires can be used to replace CaSi as well as CaFeAl and can also decrease inventory and storage costs. The wire can be found in 9mm and 11.5mm diameters, and sheaths that have a thickness of 0.6mm up to 0.8mm. This cored wire can further improve the transverse impact toughness as well as the plasticity and heat workability of the steel. It can also significantly alter the shape of the inclusions inside the steel. It can also greatly improve the metallurgical quality of the steel and save energy. The mainstream transaction price of pure calcium-cored wire Ca28Si6013mm ranges from 10,300 to 10,800 yuan for one ton.
English
Write a Message