unbounded moulding process in which a dry and free flowing magnetic steel shots or granules are used as mould materials. The pattern for the required job is made of using expendable polystyrene materials. An electromagnetic field is created using electro magnets and this magnetic field is used as the binding force. In this paper‚ the design and fabrication issues of Magnetic Moulds are explained. The cost analysis and sample castings produced by this method and the factors influencing
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The magnetic separator is one of commonly used preparation equipments in magnetic separation factory. It has dry and wet two types. According to types of magnets‚ it can be divided into permanent magnet type and electromagnet type. It is also can be divided into strong magnet type‚ middle magnet type and weak magnet type according to the magnetic field strength. Different magnetic separators have different characteristics and performance. 1‚ to maintain good lubrication condition is to extend the
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transportation that suspends guides and propels vehicles through the harnessing of electromagnetic force. • The term "maglev" refers not only to the vehicles but also to the railway system. • Maglev train uses magnetic levitation from a very large number of magnets for lif and propulsion. • Has the potential to be faster‚ quieter and smoother than wheeled mass transit systems Introduction • Power needed for levitation is usually not a large percentage of the overall consumption • In the present moment there
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pole. 3. An electric current in a wire creates a circular magnetic field around the wire‚ its direction depending on that of the current. 4. A current is induced in a loop of wire when it is moved towards or away from a magnetic field‚ or a magnet is moved towards or away from it‚ the direction of current depending on that of the movement. While preparing for an evening lecture on 21 April 1820‚ Hans Christian Ørsted made a surprising observation. As he was setting up his materials‚ he noticed
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Electromagnets! An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices‚ such as motors‚ generators‚ relays‚ loudspeakers‚ hard disks‚ MRI machines‚ scientific instruments‚ and magnetic separation equipment‚ as well as being employed as industrial lifting electromagnets for picking up and moving heavy iron objects
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separator and contact them directly on directindustry.magnetic separator is widely used in various industries to extract iron. our range of magnetic separators includes overband magnetic separators‚ a&a magnetics manufactures industrial strength magnets‚ magnetic separators and a complete line of permanent magnetic assemblies. aa also offers magnetic pulleys introduction to magnetic separator: the magnetic drum separator is a kind of most widely and commonly used equipment in the mining industries
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within the loop. The way an electric generator functions is based on the principal of "electromagnetic induction". Electro magnetic induction is when you move a wire through a magnetic field causing electric current to enter the wire. As long as the magnet and the coil move relative to each other‚ a potential difference is produced across the coil and current flows in the coil. A potential difference is also produced if the magnetic field through the coil grows stronger or weaker. The greater the rate
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that are strongly attracted to a magnet‚ are called ferromagnetic (or ferrimagnetic). These include iron‚ nickel‚ cobalt‚ some alloys of rare earth metals‚ and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic‚ all other substances respond weakly to a magnetic field‚ by one of several other types of magnetism. Every magnet has two poles. This is where
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"magical powers of magnetite." Years following‚ magnetite had been marked with superstitious feelings of possessing "magical powers‚ such as the ability to heal the sick‚ frighten evil spirits and attract and dissolve ships made of iron!" (Jezek‚ 2006). Magnets "attract paper clips‚ nails and other objects made of iron" (Giancoli‚ 1998). Johann Gauss‚ born April 30th‚ 1777‚ was a man or great accomplishment. Starting at the age of seven‚ "his potential was noticed almost immediately. His teacher and
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the bar magnet until you’ve put it on the opposite side of the bar magnet. Describe what happens to the compass needle. The white lead of the needle faces the South part of the magnet in a perpendicular way. When the needle is facing the center of the magnet‚ the lead turns to a 90 degree angle‚ being parallel to the magnet. When the compass faces the North part of the magnet‚ the needle turns 90 degrees in the same direction until the red lead if facing towards the North of the magnet.
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