In the production process of Cold Rolled Non-Oriented Silicon Steel, controlling the cold rolling process parameters is crucial to ensure the performance of silicon steel.
First, the reduction rate is a key process parameter. A higher reduction rate can refine the grains of silicon steel, thereby improving its magnetic properties. However, too high a reduction rate may cause excessive stress inside the silicon steel, and even defects such as cracks. Therefore, it is necessary to reasonably select the reduction rate according to the material, thickness and final performance requirements of the silicon steel. Generally speaking, the reduction rate can be gradually increased by multiple cold rolling to reduce the accumulation of internal stress.
Secondly, the rolling speed will also affect the performance of silicon steel. A higher rolling speed can improve production efficiency, but at the same time it will also cause silicon steel to generate more heat during the rolling process, resulting in grain growth, thereby reducing magnetic properties. Therefore, it is necessary to select a suitable rolling speed based on the capacity of the equipment and the performance requirements of silicon steel. In actual production, the temperature of silicon steel can be controlled by adjusting the cooling system to reduce the impact of grain growth.
In addition, tension is also an important process parameter. Appropriate tension can keep silicon steel in good plate shape during rolling and reduce defects such as edge cracks. At the same time, tension can also affect the internal stress distribution of silicon steel, thereby affecting the magnetic properties. Generally speaking, the size of the tension needs to be adjusted according to factors such as the thickness, width and rolling speed of the silicon steel.
In addition, lubrication and cooling conditions also have an important impact on the performance of silicon steel. Good lubrication can reduce friction and energy consumption during rolling, and can also reduce defects such as scratches on the surface of silicon steel. Cooling can control the temperature of silicon steel and reduce the impact of grain growth. In actual production, appropriate lubricants and cooling methods can be selected according to different rolling stages and performance requirements of silicon steel.
In short, controlling the process parameters during cold rolling is the key to ensuring the performance of Cold Rolled Non-Oriented Silicon Steel. It is necessary to comprehensively consider various factors and achieve high-performance production of silicon steel through reasonable process design and parameter adjustment.
