Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of cold rolled oriented electrical steel in China. Welcome to wholesale customized cold rolled oriented electrical steel at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
Grain Oriented Flatrolled Electrical Steel refers to cold-rolled electrical steel containing 2.9% to 3.5% Si, and the crystal structure of the steel plate has a certain pattern and direction. Grain-oriented electrical steel is an indispensable soft magnetic material in the electric power industry. It is mainly used in transformers, rectifiers, reactors, large motors and other industries.
| Nominal thickness | 0.18mm, 0.20mm, 0.23mm,0.27mm,0.30mm,0.35mm, 0.5mm |
| Coil ID | 508mm |
| Weight | 2MT~8MT |
| Standard | EN 10106,IEC 60404-8-4,ASTM,DIN,GB,JIS |
| Form | Cold Rolled Strip |
| Delivery Lead Time | 7~15 days after T/T prepayment or L/C date |
| Packing | Standard export package for ocean transportation |
| Application | All kinds of transformer, reactor,filter,inverter |
Oriented electrical steel:
Ore ---- Ironmaking ---- Steelmaking ---- Hot Rolling ---- Pickling ---- Cold Rolling ---- Annealing ---- Cold Rolled Silicon Steel (Oriented Electrical Steel)
Cold rolled electrical silicon steel sheet, divided into oriented silicon steel sheet and non-oriented silicon steel sheet and dw material. Cold rolled non-oriented silicon steel sheet for electric motors commonly used thickness of 0.35 and 0.50mm more volume supply, their silicon content is generally lower; transformer cold rolled oriented silicon steel sheet commonly used thickness of 0.20, 0.30, 0.35, 0.50mm, their silicon content is generally higher. If you need, please contact us for the price of various specifications.
CRGO Making and using Grain oriented Electrical steel :
Grain Oriented Electrical Steel (CRGO) is more restricted in composition than non-oriented varieties. The texture is developed by a series of careful working and annealing operations, and the material must remain essentially single-phase throughout processing, particularly during the final anneal because phase transformation destroys the texture. To avoid the y loop of the Fe-Si phase system, today's commercial steel has about 3.25% Si. Higher silicon varieties, which might be favored on the basis of increased resistivity and lower magnetostriction, are precluded by difficulties in cold rolling.
Temperature, atmosphere composition, and dew point are closely controlled to decarburize the strip without oxidizing the surface. During this treatment, primary recrystallization occurs, forming small, uniform, equiaxed grains. The coating of magnesium silicate glass which forms will provide electrical insulation between successive laminations when assembled in a transformer core. At this stage, the Electrical steel is graded by cutting Epstein samples from the coil; the samples are stress relief annealed and flattened at 790°C, and tested for core loss.
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Product application：
Applications for CRGO Grain oriented Electrical Steel include transformers (power, distribution, ballast, instrument, audio, and specialty), and generators for steam turbine and water wheels.
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