Hot-rolled silicon steel sheets are made by melting Fe-Si alloy in an open furnace or electric furnace, repeatedly hot-rolling into thin sheets, and finally annealing at 800-850C. Hot-rolled silicon steel sheets are mainly used in the manufacture of generators, so they are also called hot-rolled motor silicon steel sheets. However, their availability is low and their energy loss is large. In recent years, relevant departments have required them to be phased out. Cold-rolled non-oriented silicon steel sheet: The main use of cold-rolled non-oriented silicon steel sheet is for generator manufacturing, so it is also called cold-rolled motor silicon steel.
Its silicon content is {{0}}.5%-3. 0%, and it is cold rolled to the finished thickness. It is mostly supplied as 0. 35mm and 0. 5mm thick steel strips. The Bs of cold-rolled non-oriented silicon steel is higher than that of oriented silicon steel; compared with hot-rolled silicon steel, its thickness is uniform, dimensional accuracy is high, and the surface is smooth and flat, thereby improving the filling factor and the magnetic properties of the material.

The main use of cold-rolled oriented silicon steel strip is for transformer manufacturing, so it is also called cold-rolled transformer silicon steel. Compared with cold-rolled non-oriented silicon steel, the magnetism of oriented silicon steel has strong directionality; it has superior high magnetic permeability and low loss characteristics in the rolling direction that is easy to magnetize. The iron loss of the oriented steel strip in the rolling direction is only 1/3 of the transverse direction, and the magnetic permeability ratio is 6: 1. Its iron loss is about 1/2 of the hot-rolled strip, and the magnetic permeability is 2.5 times that of the latter. .

DR510-50 represents the iron loss value... which is the value obtained by expanding the nominal thickness (the value expanded by 100 times) + code A + the guaranteed iron loss value (the iron loss value when the frequency is 50HZ and the maximum magnetic flux density is 1.5T) )
DR{{0}} represents hot-rolled silicon with an iron loss value of 5.1 and a thickness of 0.5mm. Characteristics: Aluminum has a small density and a specific gravity of 2.7, which is about 1/3 of copper; electrical conductivity, thermal conductivity, plasticity, cold toughness Duhao cold rolled non-oriented silicon steel strip (sheet)
Representation method: DW + iron loss value (at a frequency of 50HZ, the magnetic induction peak value of a sinusoidal waveform is the iron loss value per unit weight of 1.5T.) 100 times + 100 times the thickness value.
For example, DW{{0}} represents cold-rolled non-oriented silicon steel with an iron loss value of 4. 7w/kg and a thickness of 0. 5mn. The new model is now represented as 50W470.