What Is An Electro Permanent Magnet?

An electro permanent magnet contains two kinds of magnetic materials, using electricity to actviate or deactivate its own magnet field. It combines the properties of a permanent magnet and the ease of control of an electromagnet.

What's the Difference Between Electromagnet and Electro-permanent magnet?

Both industrial magnets are electrically switched on/off. The main difference lies in 2 points.

First, electromagnet works on consistent electric power; if cutting off the power supply suddenly, it losses magnetic force. What distinguishes electro-permanent magnet from electromagnet is that the former does not use electricity during working. If cutting off the power, it can remain holding/lifting/gripping/clamping of the load.

Second, due to continuous power input, electromagnet has heat generation which might affect its workholding effectiveness during machining. Whereas that is no problem to EPM.

What Happens If An Electrical Power Failure Occurs?

For an electro permanent magnet, the magnetic force still remains in the event of a power failure, which is to say, in lifting or workholding applications, the ferrous load or workpiece, will stay lifted/clamped, no need to worry about the falling off. 

Moreover, the magnet cannot be deactivated until the electrical power is restored.

What Are The Advantages of Electro Permanent Magnetic Products?

Higher Safety: Insusceptible to a sudden power failure/outage, the magnetic force remains during work. No dropping of a suspended load, workplace safety guaranteed.

Convenience: No battery back-up system is required.

Energy Saving: Only uses electricity for a few seconds during the MAG and DEMAG phases. No electrial power consumed during work. The electrical consumption is 95% less compared to a traditional electromagnet.

How About HVR MAG's Partnership With Customers?

HVR MAG has established longterm relationships with our customers worldwide, not only for current business, but also for developments in the long run. Each electro permanent magent we produced, we treat it as our child, and will track the running condition with its unique ID number when been delivered to our customers. We take good care of them and grow up together with them. You may find this a bit unreal. But if you choose HVR MAG, your experience will justify it.

How Is HVR MAG's Overseas After-Sales Service?

Some of HVR MAG's local agents can provide technical services.

Professional engineers can be delegated to provide installation assisttance.

Technical Window Consulting available at any time from HVR MAG.

How Is The Quality Guarantee System of HVR MAG?

Our engineering team is backed up by European professors.

Our quality management system is set up in strict accordance with ISO 9001:2015 standard.

Each product manafactured has to go though seriously material check and quality inspections before delivery.

What Information Do I Need To Provide To Get A Quotation?

The workpiece needs to be adsorbed through the carton, and the thickness of the carton is about 3-5mm, is it feasible?

Generally, yes, HVR MAG can do it. But also you need to provide information about the weight of the workpiece, the clearance distance between the workpiece and the carton, etc.

Can the magnetic force of the electro-permanent magnet be adjusted?

The adsorption force of the electro-permanent magnet produced by HVR MAG can be adjusted by the control system. Generally, there are three grades of magnetic force, which can be customized according to the actual needs of customers. 

Is there a relationship between the size of the magnet and the contact area?

They are proportional to each other: the larger the contact area, the greater the magnetic force of the electro-permanent magnet. Normally 16kg/c㎡.

Is there much residual magnetism after processing of electro-permanent magnet?

There is almost no residual magnetism in low carbon steel, but a little bit in high carbon steel. If there is a requirement for residual magnetism, we can design the product to be demagnetized with demagnetization treatment.

What if I need to unload a ship at the dock and it's not convenient to connect to electricity?

I recommend our battery powered magnetic lifter to you (click! ).

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© HVR Magnetics Co.,Ltd., 2016