Direct Supply from Grain-Oriented Silicon Steel Coil Manufacturers: Specifications and Magnetic Performance Parameters of Silicon Steel Coils for Transformers

Grain-oriented silicon steel coil is a core soft magnetic material in the modern power industry, renowned for its excellent magnetic properties, making it the preferred choice for manufacturing efficient and energy-saving transformer cores. As a high-end category within cold-rolled silicon steel coils, its grains are highly oriented in the rolling direction, featuring low iron loss and high magnetic induction, directly impacting the no-load loss and operational efficiency of transformers. Choosing a reliable manufacturer for direct supply of silicon steel coils is crucial for ensuring stable transformer performance and cost control.

Core Specification Requirements for Silicon Steel Coils in Transformers

Transformer cores impose stringent requirements on the specifications of silicon steel coils. Key parameters include thickness, width, and coil weight. Common thicknesses are 0.23mm, 0.27mm, and 0.30mm, with thinner coils effectively reducing eddy current losses. Width is tailored according to core design, typically ranging from 800mm to 1300mm. Using heavy-gauge coil materials can minimize core joints, enhancing magnetic circuit continuity. The cold-rolling process ensures high dimensional accuracy and surface quality, meeting the demands of automated core lamination production.

In-Depth Analysis of Key Magnetic Performance Parameters

Magnetic performance is the core quality indicator of grain-oriented silicon steel coils, especially high magnetic induction silicon steel coils. The main parameters include iron loss and magnetic induction intensity:

Iron Loss (P1.7/50): Refers to the unit weight loss (Watts per kilogram) under conditions of 1.7T magnetic induction and 50Hz frequency. A lower value indicates reduced energy loss of the material in alternating magnetic fields, leading to lower no-load loss and higher energy efficiency in transformers. This is a key metric for assessing energy-saving performance.

Magnetic Induction Intensity (B800): Refers to the magnetic induction value (Tesla) achieved at a magnetic field strength of 800 A/m. High magnetic induction silicon steel coils typically have a B800 value greater than 1.88T. Higher magnetic induction allows for using less material or reducing core cross-sectional area for the same magnetic flux, enabling miniaturization and weight reduction of transformers.

Advantages and Considerations of Choosing Direct Manufacturer Supply

Partnering directly with silicon steel coil manufacturers possessing strong technical capabilities offers significant advantages. Direct supply not only ensures material traceability and consistent quality but also enables manufacturers to provide recommendations for specifications and grades (such as domestic grades 30Q120, 27Q100, or equivalent international grades) best suited to the user's specific transformer design and performance goals. This eliminates intermediaries, offering greater competitiveness in procurement cost, delivery time, and technical support. Reputable manufacturers typically have comprehensive quality inspection systems and can provide authoritative magnetic performance test reports.

In summary, selecting grain-oriented silicon steel coils for transformers involves a balance between technical and economic considerations. Understanding the core specifications and the significance of the two key magnetic parameters—iron loss and magnetic induction—forms the basis for effective communication with manufacturers and securing high-quality direct supply. Choosing a technologically advanced and reliable partner for direct procurement of high magnetic induction cold-rolled silicon steel coils that meet requirements is fundamental to manufacturing high-performance, low-loss, energy-saving transformers.