Analysis of fault layer problem of JIS G3101 SS400 hot rolled strip steel

The cross-layer problem of JIS G3101 SS400 hot rolled strip steel is a long-term challenge for continuous cast rolling mills.

The wrong layer problem caused inconvenience to the binding, marking and transportation of JIS G3101 SS400 hot rolled strip steel. At the same time, the original qualified SS400 steel strip after the roll-out defects, resulting in losses.

The main reason for JIS G3101 SS400 hot-rolled strip steel cross-layer problem is:
1) severe wear of side guide plate.
As JIS G3101 SS400 hot-rolled strip steel passes through the side guide plate rapidly, the working face of the side guide plate is severely worn during the clamping process of the SS400 carbon steel. The side guide plate cannot touch the SS400 steel strip at the setting position, resulting in the movement of SS400 carbon steel sheet between the guide plate and uneven take-up. With the increase of the unevenness coil, the wrong layer problem occurred.

2) reason of side guide plate detection component.
Replace the position sensor, do not carry out position calibration, the error between the feedback position and the actual position occurs, both sides of the guide plate will not clip SS400 carbon steel. Therefore, when SS400 carbon steel strip passes, the guide plate can never be in the state of force control, resulting in the wrong layer problem. In addition, the feedback error of the actual pressure value will also lead to the fault layer problem of JIS G3101 SS400 hot-rolled strip steel.

3) problems existing in JIS G3101 SS400 hot-rolled strip steel.
This uneven edge of the SS400 steel strip, such as the bending or wave during rolling, will cause the side guide plate to bear greater instantaneous stress. Side force control rules will be opened to protect equipment and away from soft steel bands to reduce stress.
The JIS G3101 SS400 hot-rolled strip then moves between the side guide plates without clamping, causing the wrong layer problem.

There are also other factors that can lead to fault layer problem of JIS G3101 SS400 hot rolled strip steel, such as causes of the clamping roller. Please contact the professional supplier BBN steel to learn more about SS400 carbon steel.