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Electrical steel made without special processing to control crystal orientation, non-oriented steel, usually has a silicon level of 2 to 3.5% and has similar magnetic properties in all directions, i.e., it is isotropic. Cold-rolled non-grain-oriented steel is often abbreviated to CRNGO.
This special "grain-oriented" structure was named after its inventor and it is referred to as the "GOSS structure". Grain-oriented electrical steel enabled the development of highly efficient electrical machines, especially transformers. Today, the magnetic cores of all high-voltage high-power transformers are made of grain-oriented electrical ...
Production facilities have an annual capacity to produce about 200,000 tonnes of electrical steel. In 2006, the company produced 180,000 tonnes of grain-oriented steel and 16,000 tonnes of non-grain-oriented steel. Novolipetsk Steel (NLMK) is the major supplier of hot-rolled coils for further cold rolling at VIZ-Stal. The main customers of ...
non oriented D (formerly B) " non-alloy semi-finished (not finally annealed) E " alloy semi-finished (not finally annealed) K (=D+E) " non-alloy and alloy electrical steel sheet/strip in the semi-processed state N " for normal grain oriented products P: 1.7 T @50 Hz high permeability grain oriented S" conventional grain oriented
A family of hysteresis loops for grain-oriented electrical steel, a soft magnetic material. B R denotes retentivity and H C is the coercivity. The wider the outside loop is, the higher the coercivity. Movement on the loops is counterclockwise.
The mechanism of secondary recrystallization is a small and uniform primary grain size, achieved through the inhibition of normal grain growth by fine precipitates called inhibitors. [2] Goss grains are named in honor of Norman P. Goss, the inventor of grain-oriented electrical steel circa 1934.
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P. Beckley, Production of grain oriented steel, UK Patent 4652316, 24 March 1987 [4] P. Beckley, Measurement of magnetic properties of electrical steels using a search coil partially defined by a fluid electrolyte, US Patent 5365170, 15 November 1994 [5]