Magnet lifting device is used to lift and move heavy objects using magnetic forces. They are commonly used in industrial settings where heavy materials need to be lifted and transported. Magnet lifting devices come in different types, including permanent magnet lifting devices, electromagnetic lifting devices, and electro-permanent magnet lifting devices.
Magnet lifting device can lift large sizes or weights of steel such as steel plates, billets, coils, etc. They have a controlled magnetic field, which is controlled by a spanner or an electric switch. It needs to work with cranes or electric hoists.
Permanent Magnet Lifting Device
The permanent magnet lifting device is made of permanent magnet material, which has a constant magnetic force. It has the advantage of being energy efficient and uses no electricity at all. It is also very safe and durable, the magnetic force does not disappear and is not easily damaged. However, permanent magnet lifting devices usually use a handle to switch the direction of the magnetic field, which is a less convenient way of controlling it. So it is competent when handling smaller steel, but it is not efficient enough when handling large steel plates.
Electromagnetic Lifting Device
Electromagnet lifting device works on a completely different principle to permanent magnets. Electromagnets have to rely on an electric current to produce a magnetic field, however copper coils get hot when they are energised for a long time, so they are less safe. The electromagnet’s magnetic force is very strong and adjustable, which is its advantage. It can handle not only large steels, but also steels with large air gaps such as scrap steel and steel bars. However, its high power consumption and more complex construction can also lead to high damage rates. This is something that needs to be carefully considered when purchasing a magnet lifting device.
Electro-Permanent Magnet Lifting Device
Electro-permanent magnet (EPM) lifting devices combine the advantages of permanent magnet lifting devices and electromagnetic lifting devices. EPM lifting devices use a combination of permanent magnets and electromagnets that can be turned on and off by changing the current flow. This allows for a strong magnetic force when lifting heavy objects and the ability to turn off the magnetic force when the object needs to be released. EPM lifting devices are easy to operate, have a high lifting capacity, and are safe to use. They also have a long service life and low power consumption.
Comparison of Electro-Permanent Magnet Lifting Device and Other Types
Compared to permanent magnet lifting devices, EPM lifting devices have a higher lifting capacity and the ability to turn off the magnetic force, which improves safety. Compared to electromagnetic lifting devices, EPM lifting devices have a simpler design, lower power consumption, and a longer service life.
In summary, electro-permanent magnet lifting device offer the best of both worlds. They combine the advantages of permanent magnet lifting devices and electromagnetic lifting devices, making them a reliable and efficient solution for lifting and moving heavy objects in industrial settings.
As a professional manufacturer of electric permanent magnet lifting device, HVR MAG has always insisted on providing quality products and services. Feel free to contact us.
