Definition and characteristics of cold-rolled non-oriented silicon steel strip

Cold-rolled non-oriented silicon steel strip is a silicon steel material produced by cold rolling process. Its grain orientation is irregularly distributed and has good magnetic properties, processing properties and electrical properties. The silicon content of this material is usually low, generally between 1%-3%, with high magnetic permeability and low iron loss, suitable for manufacturing iron core components of various motors and electrical appliances

Product Parameters

Main specifications of cold-rolled non-oriented silicon steel strip

1. Thickness range: 0.2mm-1.0mm, such as 0.23mm, 0.25mm, 0.27mm, 0.3mm, 0.5mm, etc.1.

2. Model identification: such as 50W250, 50W600, M19, M470, etc., where the number before "W" indicates the iron loss value (W/kg), and the number after "W" indicates the thickness (0.01mm).

3. Material type: including high magnetic induction type (such as 50H1000), ordinary type, etc., supporting customized size processing

Core application scenarios

1. Transformer core: used to manufacture the core of power transformers and distribution transformers, using its high magnetic permeability characteristics to improve energy efficiency.

2. Motors and electrical appliances: such as asynchronous motors, relays, ballasts, etc., as magnetic conductive materials to reduce energy loss.

3. Precision parts: support secondary processing such as welding and cutting, suitable for customized electrical components

Production process and quality control of cold-rolled non-oriented silicon steel strip

1. Key production links

Hot rolling and cold rolling: through hot rolling slabs and then multiple cold rolling, control thickness accuracy and surface quality.

Continuous annealing: The annealing process directly affects the surface quality and magnetic properties, and parameters such as temperature and atmosphere need to be strictly controlled.

Texture control: Optimize grain orientation and improve magnetic uniformity through asynchronous rolling and other processes.

2. Factors affecting quality

Chemical composition: The silicon and carbon content must be strictly controlled (e.g. silicon 2.9%-3.4%, carbon ≤0.08%) to balance magnetic properties and processability.