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advantages of electromagnetic crane

An electromagnetic crane is a type of crane with an electromagnetic lift. Electromagnetic cranes are commonly utilized in lifting and moving various scrap metals. It does not have the mechanical 'pincers' of a regular crane, instead, it has a large flat magnet which draws the metallic materials to it. Using the principle of electromagnetic induction, these large machines are used to handle scrap ferrous metals, such as iron and steel, which can be found in junk yards and recycling plants. Beyond the area of lifting magnetic materials, another use of an electromagnetic crane is that it makes for smooth and safe stops due to its solenoid brakes (electrically controlled brakes which can be turned on and off by a solenoid). These brakes are the ones being used on movable bridges as it allows the passage of boats and barges. How The Electromagnetic Crane Works: An electromagnet is a type of magnet wherein the magnetic field is produced by electric current, and the field disappears whenever the current is turned off. Electromagnets are being utilized in everyday items, just like loudspeakers and doorbells. An electromagnetic crane has a large electromagnet which can be turned on and off. The electromagnet contains an iron core with a wire around it, and this wire is the medium by which the current travels. The magnetic strength of an electromagnet relies on the number of turns of the wire around the electromagnet's core, the current through the wire and the size of the iron core. Increasing these elements will result in an electormagnet which is significantly larger and stronger as compared to a natural magnet (which explains the enormous size of the crane's magnet). For the electromagnet to be turned off, the core must be made of soft iron. Therefore, turning on the electricity will enable the magnet to work, and turning off the electricity will be able to shut it down. Dismantling the old crane Over the past years, the existing cranes at voestalpine Rotec...

You will be able to drastically improve the workflow that you take advantage of when you get your hands on an electromagnet overhead crane. Your work will by quicker and you will have less injuries on the jobsite. You also be able to keep your profit margins in line because it would take far less manpower to get the work done.

Electromagnetic energy is clean. It is not polluting like oil and coal energy sources, nor do we have to destroy the environment to get the raw materials--electrons are everywhere. It has no radioactive components that can explode violently or produce dangerous radioactivity for thousands of years. It also is renewable--we will never run out of electrons or magnetism. Besides being clean and renewable, electricity is versatile. We already know hundreds of ways to use electricity to cool, to heat and to drive motors of all sizes to perform all kinds of work. Electricity can be made to work on extremely small scales, such as in microchips. For packing a lot of information-processing power into a low energy-consuming package there is no other power source that even comes close.

Electromagnetic power transmission is already a reality on a small scale. Joshua R. Smith, an Intel researcher in Seattle, has developed a device that collects power from ambient RF signals. These signals from radio and television broadcasts largely go to waste. The air is full of these signals. Only a small percent of the energy goes into activating the antennas of interested receivers--the rest goes into trees, houses, the ground or into outer space. Enough of this ambient energy already exists to power a large handheld calculator or an iPhone.

The wireless transmission of electrical power is an idea that goes back to at least the early part of the 20th century. Nikola Tesla (a contemporary of Thomas Edison) worked on the project and discovered the chief disadvantage: It is not easy to achieve. This challenge remains the major disadvantage. Even if it was easy, there is another disadvantage that worries many people: is it safe. Most researchers have concluded that Radio Frequency (RF) waves--the proposed means of transmission--are completely safe and that RF has no affect on living tissue. Not everybody agrees.

Electronics require no maintenance. You therefore avoid production costs and reduce your operating costs. Also, the controller has no mechanical parts. When common problems are detected by the controller, they are placed in buffer memory. All of the controller’s inputs and outputs are continually displayed in real time. Positive and negative voltage and amperage are identified by upper and lower case letters. With this information and telephone support, you can adjust the level of efficiency to 30% greater than what is indicated on the electromagnet's identification plate if needed and if your generator has the capacity. Thanks to this data, you can solve problems online. No more waiting for a technician to become available.

Electrical actuators, which are motors responsible for converting electrical energy into mechanical torque, also rely on electromagnets. Electromagnetic induction is also the means through which power transformers function, which are responsible for increasing or decreasing the voltages of alternating current along power lines.

In the case of electromagnetic solenoids, they are used wherever a uniform (i.e. controlled) magnetic field is needed. The same holds true for iron-core electromagnet, where an iron or other ferromagnetic core can be inserted or removed to intensify the magnet’s field strength. As a result, solenoid magnets are to be commonly found in electronic paintball markers, pinball machines, dot matrix printers and fuel injectors, where magnetism is applied and controlled to ensure the controlled movement of specific components.

And then there are “superconducting” electromagnets, which are composed of coiled wire made from superconducting materials (such as niobium-titanium or magnesium diboride). These wires are also kept at cryogenic temperatures to ensure that electrical resistance is minimal. Such electromagnets can conduct much larger currents than ordinary wire, creating the strongest magnetic fields of any electromagnet, while also being cheaper to operate because of there being no energy loss.

Since that time, scientists have sought to test and measure electromagnetic fields, and to recreate them. Towards this end, they created electromagnets, a device that uses electrical current to induce a magnetic field. And since their initial invention as a scientific instrument, electromagnets have gone on to become a regular feature of electronic devices and industrial processes.

The magnetic strength of an electromagnet depends on the number of turns of wire around the electromagnet's core, the current through the wire and the size of the iron core. Increasing these factors can result in an electromagnet that is much larger and stronger than a natural magnet. For example, there is no known natural magnet that is able to pick up a large steel object such as a car, but industrial electromagnets are capable of such a task.

This type of train usually consists of a set of magnets along the bottom of the train and a series of electromagnets on the tracks or guide-way for the train. The electromagnets are adjusted to have the same polarity as the train's magnets, though complex computer controls. Since the magnetic poles repel, the train is levitated or floats slightly above the track. Guides on the sides prevent the train from sliding off.

One useful characteristic of an electromagnet is the fact that you can vary its magnetic force by changing the amount and direction of the current going through the coils or windings around it. Loudspeakers and tape recorders are devices that apply this effect.

Depending on the position of the train, the polarity of the electromagnets is adjusted, causing the train to move forward. Maglev trains can reach speeds over 260 mile per hour or 430 kilometers per hour.

Lifting magnets are used to move and position ferromagnetic (often steel) work pieces of various shapes and lengths quickly and without damage. A lifting and hoisting magnet saves valuable storage space and time.

Electromagnets employ electricity to charge the magnet and hold the material to the magnet face. Electromagnets use an energized electrical coil wrapped around a steel core to orient particles within ferrous materials in a common direction, thus creating a magnetic field. Electromagnets are generally built to run on DC current, creating the need for a rectifier. Unlike permanent magnets, electromagnets require a constant power source. This can be viewed as either a detriment or an advantage, depending upon how the magnet is being used. A power failure can be catastrophic when using an electromagnet—though universal power supplies and battery backup systems available in today's market address these concerns. On the other hand, the ability to vary the current being supplied to the magnet allows the user more flexibility than a permanent magnet affords.

Both permanent magnets and electromagnets can be constructed to produce different types of magnetic fields. The first consideration in choosing a magnetic circuit is the job you want the magnet to do. Permanent magnets are favored when electricity is not readily available, when power failures are a common occurrence or when adjustable magnetic force is not necessary. Electromagnets are useful for applications where varying strength is required or remote controlling is desired. Magnets should be used only in the manner for which they were originally intended. Using the wrong type of magnet for a specific application can be extremely dangerous and possibly even deadly.

Still, there are times when the part to be machined is thin—0.25 inch or thinner—and the part is presented to the machine operator as one of a stack of similar parts. Permanent magnets are not designed to lift only one piece from the stack at a time. Permanent magnets, while extremely reliable when properly applied, are not able to alter the amount of magnetism produced. In this case, an electromagnet with variable voltage control allows the operator to manage the magnetic strength and select only one piece from the stack.

A trained professional must install the magnet. The supplier will usually send out personnel to evaluate the application and handle the installation process. Electromagnets require greater setup time and additional equipment because of the DC electrical connection. Electromagnets are also outfitted with battery backups in case of power failure.

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