Introduction to the basic elements of the most the

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Introduction to the basic elements of electromagnet lifting equipment

magnetic lifting equipment is a multi-purpose workpiece handling device, which can be used to move all kinds of ferrous metals, from small bundles of bars or scrap to huge and heavy metal blocks. Using lifting magnets instead of slings and chains can improve the total student researchers' ability to process recycled carbon fiber composites into reinforced phase production by using non heated low-cost grinding technology, so that one person can 'lift' the load that two or more people need to lift for old-fashioned tools

lifting magnets can improve productivity. For example, assuming that the parts box is horizontally filled with circular shafts, if you use a sling or chain instead of a magnetic crane, you must lift one end of the part by hand so that the sling or chain can be sleeved under the part, and this is only for lifting a bar. The lifting magnet can be put down from the crane, sucked onto the required parts, and then the parts can be easily lifted out. The magnet does not need cushion blocks and slings, which further saves time and will not damage the metal surface

types of lifting magnets

there are two basic types of lifting magnets: permanent magnets and electromagnets

as the name suggests, permanent magnets use permanent magnetic materials to enhance the magnetic field

permanent magnets used at the work site generally use control handles to connect and disconnect. They can be used to handle both flat materials and round parts within 2200 pounds. These lifting equipment are 'self-contained' and can be moved to different working places at any time in the machining workshop, but one disadvantage of the permanent magnet is its limited lifting capacity

electromagnets are electrically excited and attract materials to the surface of the magnet. The electromagnet uses the energized coil wound on the iron core to make the particles in the ferrous material arrange in a common direction, thus generating a magnetic field. Electromagnets generally work with DC, so rectifier is needed. Unlike permanent magnets, electromagnets need a constant power source, which may be regarded as either a disadvantage or an advantage because of the use of electromagnets. When using electromagnets, power failure can be disastrous, although these problems can be solved with the multi-purpose power supply and battery backup system available in the market today. On the other hand, compared with permanent magnets, electromagnets can change the energy of electrified current. 1. How to evaluate the realization of the development goal of "1025" new material industry? Force provides users with greater flexibility

comparison between permanent magnet and electromagnet

both permanent magnet and electromagnet can produce different forms of magnetic field. When choosing the magnetic circuit, the first consideration is what you need the magnet to do. Permanent magnets have the advantage in situations where it is inconvenient to use electricity, power cuts often occur, or there is no need to adjust the magnetic force. Electromagnets are useful for applications that require changing the magnetic force or requiring remote control. Magnets can only be used in the original predetermined way. If the wrong type of magnet is used for a special purpose, it may be extremely dangerous or even fatal

many processing operations are carried out on heavy block materials, which require permanent magnets. Many users of machinery factories believe that the greatest advantage of these magnets is that they do not need electrical connections

the permanent magnet is characterized by a lifting capacity of 330-10000 pounds, and the magnetic circuit can be connected or disconnected by rotating only one handle, Guo Piyi said. The magnet is generally equipped with a safety lock to ensure that the magnet will not be accidentally disconnected during lifting. The magnet group can be used for long loads that are relatively heavy and cannot be handled by a single magnet

also, in many cases, the parts to be processed are very thin (0.25 inch or finer), and they need to be extracted from a pile of similar parts. Permanent magnets are not suitable for lifting only one piece from a pile of parts at a time. Although permanent magnets are extremely reliable when used correctly, they cannot change the size of the magnetic force. In this aspect, the electromagnet enables the operator to control the magnetic field strength through the variable voltage control device, and can select one from the stacked parts. Self contained electromagnet is the most cost-effective magnet with unit lifting capacity, and its lifting capacity can be extended to 10500 pounds

magnets powered by batteries are useful. They use self-contained colloidal batteries to increase lifting capacity, and can handle flat, round and component shaped products. The magnet powered by the battery can repeatedly complete the lifting action, providing considerable lifting capacity without external power supply

starting from the magnetic crane

the lifting magnet, whether electric or permanent magnet, has a rated load on the nameplate. This capacity is related to a certain thickness. If the magnet is used for materials with thickness less than the rated value, the rated load will be reduced. In order to increase the lifting capacity, the lifting magnets can be installed on the lifting beam in groups. When using the magnet group to lift the load, the magnets should be evenly separated to share the whole load. The material is easy to fatigue when there is no support. The frequency knowledge of the testing machine is too low, so the magnet must be of appropriate size to support the load. When the load is lifted and the direction is reversed, it must be noted that the load capacity of the magnet is reduced to about 1/4 of the specified value on the nameplate. In addition, materials are prone to slip when subjected to shear, so care must be taken in these applications

if the magnet works with DC, a combined AC/DC rectifier and magnetic controller must be installed on the crane, which converts the power supply of the crane from AC to DC and connects/disconnects the magnetic circuit

the remote operated lifting magnet can be controlled in the crane cab, or through the suspension switch or remote transmitter. These systems are used to process single or multiple sheets of sheet metal, whether in the storage area, truck loading and unloading or loading and unloading on the cutting table. The magnet must be installed by trained professionals, and the manufacturer usually sends personnel to identify the application and manipulate the installation process. Due to DC electrical connection, electromagnets need more installation and commissioning time and auxiliary equipment. Moreover, the electromagnet is also equipped with additional batteries in case of power failure

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