Baosteel B18R065 oriented silicon steel 0.65W/kg Low Iron Loss High Magnetic Perception Transformer Core Material

I. Products

Baosteel Oriented Silicon Steel B18R065 is a high performance cold rolled orientated electrical steel material, belonging to Baosteel's R series (laser scored orientated silicon steel) products, developed to meet the needs of high performance power equipment. Its core advantage lies in its extremely low iron loss (specific total loss) and excellent magnetic properties. The product adopts advanced laser scribing technology, and significantly reduces hysteresis loss and eddy current loss by optimising grain orientation and magnetic domain refinement process, and its iron loss value P1.7/50 (loss per unit mass under magnetic polarisation strength of 1.7T and frequency of 50Hz) reaches the international leading level, which is about 15% lower than that of traditional oriented silicon steel.

B18R065 is available in thicknesses of 0.18mm or 0.20mm and is coated with a high adhesion insulating coating (Class E and above) to ensure interlayer resistance and corrosion resistance, while supporting complex processing requirements. Its high magnetic polarisation strength (1.7T or more), excellent permeability and low magnetostriction characteristics effectively reduce equipment operating noise, making it suitable for use in scenarios with stringent requirements for energy efficiency and environmental protection.

II. Main uses

1，high-efficiency transformers: designed for class 1 energy-efficient distribution transformers, in line with GB20052-2013 standards, can significantly reduce no-load loss and load loss, to help achieve the ‘dual-carbon’ goal of energy saving and emission reduction needs. For example, the annual power saving of transformers manufactured with B18R065 can reach 90% of the power generation of Three Gorges Power Station.

2，Extra-high voltage transmission equipment: Used in the core of extra-high voltage AC and DC transformers to ensure the stable operation of major national power projects such as the ‘West-to-East Transmission’ and to improve the transmission efficiency of the power grid.

3，motors and generators: for the manufacture of high-efficiency motor cores, through the reduction of hysteresis and eddy current losses, to improve the energy efficiency and operational stability of the equipment, especially in the field of new energy vehicle motors have the potential.

4，Low-noise equipment: its low magnetostrictive properties make it widely used in noise-sensitive environments, such as power equipment in airports and conference centres.

III. Storage and maintenance

1，Moisture and rust prevention: The storage environment should be kept dry (relative humidity ≤ 60%), avoiding contact with acid, alkali and other corrosive substances. If stored for a long time, it is recommended to use anti-rust oil or vacuum packaging to protect the surface coating.

2，Physical protection: Avoid mechanical collision or heavy pressure to prevent deformation of steel coils or coating damage. Use special pallets when stacking and control the stacking height to reduce the bottom load.3,33333333332123123123546974124

3，Temperature control: Ideal storage temperature is between 10°C and 30°C to avoid high temperature environment that may cause coating aging or magnetic property degradation.

4，Pre-processing: If cutting or stamping is required, make sure the equipment is clean to avoid scratching the surface with impurities; clean up debris in time after processing to prevent oxidation or degradation of insulating properties.

IV. Payment modalities

Only support T/T payment, the implementation of the FOB standard, the first to determine the variety and grade of silicon steel, sign the contract prepayment of 40%, in the delivery period the goods ready to send to the designated domestic port (such as Tianjin Port), after settlement of the final payment, the goods loaded on the ship.

V. Summary

With its low loss, high permeability and low noise characteristics, Baosteel B18R065 has become a core material in the manufacture of power equipment, especially for high-efficiency transformers and extra-high voltage transmission. Its preservation needs to focus on environmental control and physical protection to ensure stable performance.