Why is it called silicon steel sheet? It was a long time ago that silicon steel was actually silicon steel. Silicon is the name of chemical element silicon, which has the saying that Silicon Valley is Silicon Valley. Silicon steel sheet also has a name called electrical silicon steel sheet, a kind of sheet material, has good magnetism.
It is a separate branch because of its special use. A kind of ferrosilicon soft magnetic alloy with very low carbon content. Generally, the silicon content is 0.54.5%. The addition of silicon can improve the resistivity and maximum permeability of iron, reduce the coercivity, core loss (core loss) and magnetic aging.
It is made by hot rolling and cold rolling. Generally, the thickness is less than 1 mm, so it is called thin plate. Silicon steel sheet for electrical purposes is commonly known as silicon steel sheet or silicon steel sheet: a kind of ferrosilicon soft magnetic alloy with very low carbon content, generally containing 0.54.5% silicon. The coercivity, core loss and magnetic aging are reduced. It is mainly used for making iron cores of various transformers, motors and generators. Silicon steel sheet production accounts for about 1% of the total steel production in the world (see precision alloy)
The existence of impurity elements in the steel is non-magnetic or weakly magnetic. So magnetization is difficult.
The chemical composition of cold rolled silicon steel sheet is about 0.8% 4.8% silicon, 006% carbon, 0.15% manganese, 0.03% phosphorus, 0.025% sulfur and 5.18.5% aluminum. The rest is iron. The effect of these elements in silicon steel sheet is sulfur (s will make silicon steel sheet hot brittle, increase hysteresis loss, reduce magnetic induction intensity of 0.025% Mn (Mn can promote phase transformation in steel, make decarburization and desulfurization disadvantageous, so as to reduce magnetic induction.