Can steel coils handling be efficient with EPM lifters?

The handling of steel strip coils is different from the handling of ordinary steel plates. Regular steel plates are stacked on a flat surface, and the surface of the plates is smooth and easy to absorb, so the handling is less complicated. The new electro-permanent magnet lifters can transport single or multiple sheets, which is efficient and convenient. Still, the steel strip roll is a workpiece with curvature, and some of the steel strip rolls have wrapping paper on the surface for protection, so it is difficult to transport. Is it still possible to handle them efficiently with an EPM lifter?

Due to the unique characteristics of the workpiece, it is difficult to handle, and many factors need to be considered in the handling process.

The impact of air gap on magnetic attenuation

Under normal circumstances, there is 1-2mm of unevenness in the steel coils, and the thickness of the wrapping paper is usually around 2-3mm, so an overall consideration of a 5mm air gap is needed adsorb the steel coils.

The permeability depth

In the case of different thicknesses of steel strip coil products, will the adsorption of thin steel strip coil workpieces cause adsorption? Suppose an electromagnetic lifter is used for handling. In that case, it is very likely to cause this situation because its magnetic force is not adjustable in the thin steel strip coil workpiece’s adsorption, which will cause collateral adsorption below. In contrast, the electro-permanent magnetic lifter does not appear this situation because its magnetic force is adjustable through the customer’s parameters to customize and adjust the appropriate magnetic force, which will not cause a collateral impact on the workpiece below.

The influence of the magnetic force on the curved surface of the steel strip coils

The electro-permanent magnetic lifter is magnetically adsorbed by the steel strip coil; the more significant the contact surface of the workpiece, the greater the magnetic force. The contact surface of the curved workpiece will have a curvature, which increases the difficulty of contact and will have a particular influence on the size of the magnetic force. To solve this problem, we can contact the surface of the electro-permanent magnetic lifter slightly curved to fit the curvature of the workpiece, which can make the EPM lifter and the contact surface of the workpiece maintain a good range and reduce the effect on the magnitude of the magnetic force.

The transportation of steel coils requires a lot. How do we improve the efficiency of steel coils handling? From lifting magnets to lifting systems, our team of experts will handle the heavy lifting. Contact us today to get started!