Steel? Silicon steel? Electrical silicon steel sheet, commonly known as silicon steel or silicon. As the name suggests, it is up to 0.8% -4.8% silicon electrical steel, through heat, cold-rolled steel. General thickness of 1mm or less, so that the sheet. Broadly speaking belong silicon plate type, due to its special purpose and independent a branch. ? Electrical silicon steel sheet having excellent electromagnetic performance, power, telecommunications and instrumentation industries indispensable material. ? (1) silicon free? A, its silicon-containing? Different silicon content can be divided into two kinds of low silicon and high silicon. Low silicon wafers below 2.8 percent, it has a certain mechanical strength, mainly for the manufacture motors, commonly known as motor silicon; high silicon silicon content of 2.8% -4.8%, it has a magnetic well, but more brittle, mainly used in the manufacture of transformer cores, commonly known as silicon steel transformer. Two are not strict boundaries in actual use, often high wafer manufacturing large motors. ? B, according to the production process can be divided into two kinds of hot and cold rolled, cold-rolled non-oriented grain orientation can be divided into two kinds of grains. Cold-rolled sheet thickness, surface quality, high magnetic, therefore, with the industrial development, hot-rolled sheet have been replaced the cold-rolled sheet trends (China has explicitly requested to stop using the hot-rolled steel sheet, which is called the pre- Replacing "Cold Fever"). ? (2) silicon performance? A, low iron loss. The most important indicator of the quality of the world are divided into grades of iron loss value, the lower the iron loss, the higher the grade, quality is also high. ? B, a high magnetic flux density. In the same sense the magnetic field can obtain a high magnetic silicon steel sheet, used to make the motor or transformer core size and weight of a small, relatively speaking, to save silicon, copper wire and insulation materials. ? C, high stacking factor. Silicon surface is smooth, flat and uniform thickness, manufacturing core stacking factor increased. ? D, punching good. Manufacturing small, micro motor core, this is more important. ? E, the surface of the insulating film adhesion and good weldability. ? F, magnetic aging? G, silicon steel annealing and pickling subject to delivery. ? (A) hot-rolled silicon steel sheet electrician (GB5212-85)? Hot-rolled silicon steel sheet electrical damage to the carbon-containing soft magnetic alloy ferrosilicon low as steel, hot rolled to a thickness of less than 1mm thin. Hot-rolled silicon steel sheet electrician, also known as hot-rolled steel sheet. ? Hot-rolled silicon steel sheet according to their combined amount can be divided into low silicon (Si≤2.8%) and high-silicon (Si≤4.8%) two kinds of steel. ? (B) cold-rolled silicon steel sheet electrician (GB2521-88)? With 0.8% -4.8% of silicon electrical silicon as a material made by cold rolling. ? Cold-rolled non-oriented silicon steel sheet grains and grain orientation two kinds of steel. Cold-rolled electrical steel with a smooth surface, uniform thickness, high stacking factor, punching and good features, and higher than the hot-rolled electrical steel magnetic induction low iron loss. Cold hot-rolled band to replace the motor or transformer manufacturer, its weight and volume can be reduced to 0% -25%. If using cold rolled oriented band, better performance, use it instead of hot-rolled or cold-rolled low level, reducing the transformer power consumption 45-50%, and the transformer more reliable performance. ? Used in the manufacture of motors and transformers. Typically, the grain cold rolled non-oriented state with used motor or a welding transformer; cold rolled grain oriented is used as power transformers, pulse transformers and magnetic amplifier like core. ? Steel Size: thickness 0.35,0.50,0.65mm, width 800-1000mm, length ≤2.0m. ? (C) hot-rolled silicon steel sheet appliance (GBH46002-90)