company news about Production of Ferroalloys

The melting point of ferrosilicon alloys is lower than that of iron, mostly lower than 1673 K. Because the reduction temperature is much higher than the liquidus, pouring these alloys is generally not difficult and it is normal to tap the metal into the ladle and pour it into the mold. Ferrosilicon alloys absorb gases during the manufacturing process, especially hydrogen, and it is common to find pores in ingots when casting because the alloy has given up some of its gas content during solidification. This is particularly evident in 75% silicon-containing alloys. There is a tendency for gravity segregation in ferrosilicon ingots because the pouring temperature is usually much higher than the solidification temperature. To avoid this, large plates of ferrosilicon are usually cast. Great progress has been made in continuous casting of ferrosilicon ingots. All of these alloys, as well as silicon metals, are brittle, and large plates break easily before they are broken to a certain size.