Precast concrete requires a magnetic formwork system to complete various forms. Formwork magnets are most commonly used when changing various structural concrete components to match customers' design.
Formwork magnets, or permanent retention magnets, are suitable when you want to quickly hold things in a certain position. For example, when it is necessary to temporarily place metal profiles to use them as a form while pouring a concrete floor.
When we say permanent, however, we are referring to its retention capacity. In fact, they are very flexible in movement through their arrangements that allow you to release the magnet once the piece you are working on is finished.
These formwork magnets are designed to achieve the highest possible holding power. To achieve this, good contact with the surface is necessary, as even a small air space will reduce the holding force.
Formwork magnets, or fixing magnets, can be used to hold steel panels, beams, fences and templates in place. An arrangement on the permanent magnet allows the user to release the workpiece again. This flexible system saves time, money and labor.
The products of the magnetic formwork system generally include:
A box of formwork magnets.
A U60 formwork magnet.
A magnet formwork adapter.
A steel chamfer.
A magnet chamfer.
As mentioned above, if you need to pour concrete or hold posts in place, simply use formwork magnets with a layout that allows you to easily remove them once done.
These holding magnets offer so much holding power, you can be sure that everything will stay in place during construction. In addition, no electricity or air is required, making it an excellent alternative to other expensive methods used in the industry.
Not only does the use of formwork magnets in your construction projects provide superior support and flexibility, but reusing the magnets can save time and money.
There is currently a range of magnetic support systems for the production of precast concrete elements. The magnets are available with formwork profile and integrated magnets or as separate units, i.e. as magnetic supports, which can be connected to a separate wooden or steel formwork on the casting table.
Magnetic supports are also manufactured to hold the lifting and fixing anchors, as well as various electrical boxes for steel formwork and for the formation of chamfers and grooves for concrete elements. The formwork systems are delivered to operate manually or with robot formwork.
The magnetic formwork system with steel profile and integrated fastening system is available for various different solutions, such as filigran, sandwich, facade, columns and slab concrete elements.
The formwork can be built for continuous production or for situations requiring flexibility with frequently changing element sizes. The formwork system consists of a steel profile and a built-in magnetic clamping mechanism that is suitable for attachment to most bases.
Magnetic brackets are used to attach the anchors to the formwork for threaded socket anchors, spherical anchors, expansion anchors and other anchoring systems.
At IMA we have suitable formwork magnets that can solve fastening problems in the field of construction, prefabrication and carpentry. If you would like more information, you can contact us by filling in the following questionnaire and we will get back to you as soon as possible.
Magnetic drums are used to separate and concentrate magnetic materials by using a stationary magnet, surrounded by a rotating shell, which imparts movement to the materials in contact.
Magnetic drums have a permanent separator which is very useful for separating iron material from non-magnetic material processed in large quantities, for purity of end products, recovery of commercially valuable metal and protection of processing plant and machinery.
They are widely used throughout the processing industry for the separation of iron contamination from ores, chemicals, food, flour, plastics, grains, sand, cement, fertilizers, abrasives, glass, slag, minerals, rock, refractories and many other products.
Magnetic drums can also have double drum, which fulfills the same objective, but has double magnetism which allows the purity of the material to be much higher. In it, anisotropic and modern permanent magnets with greater coercitivity and eternal magnetic force are used. Machines are available with vibrating material inlet hopper and fully enclosed design to prevent dust formation and contamination.
Among the main features of magnetic drums are:
The magnetic drum consists of modern anisotropic permanent magnets of high coercivity.
They're strong, rugged teams.
They achieve automatic separation of iron impurities.
The design is completely enclosed to prevent dust and pollution.
They work with temperatures of up to 150ºC, although they could work with higher temperatures, according to the client's requirement.
At IMA, we have two types of magnetic drums:
They are the most widely used for the protection of machines, mills and crushers, among others, and are perfect for the separation of iron parts in a wide variety of processes. This system is composed of two sections: One magnetic and one non-magnetic, so that the material circulating above the magnetic sector can be discharged.
The ferrous particles remain in the drum and then fall when leaving the magnetic sector. These drums are made of stainless steel (AISI 304 or AISI 316) composed of two shafts: one mobile and the other fixed. The movable shaft rotates with the drum, while the fixed shaft is used to position the magnetic field.
The magnetic drums in INOX are manufactured with:
Ferrite magnet. The magnetic separator with ceramic magnet is useful for the application where large and free iron particles are separated. The average magnetic intensity on the surface of the magnetic drum will be 1500-2000 Gauss.
Neodymium magnet. The magnetic separator with high intensity rare earth magnets Nd-Fe-B (neodymium-iron-boron) is useful to eliminate magnetic contamination with low magnetic properties and fine iron particles must be separated. The average magnetic intensity on the surface of the drum will be 3500 - 5500 Gauss.
The diffuser cabinet makes the magnetic drum an ideal product for gravity falls from pipes or environments where dust is a problem. The physiognomy of the structure means that 100% of the product falls directly on the magnet, achieving unbeatable results.
The two differentiated outlets of product and ferrous material prevent any leakage or mixture and end up providing the magnet with a complete and automatic magnetic separation system.
Both magnetic drums can work in humid and dusty environments and even at high temperatures of up to 150°C. If this temperature were to be exceeded, it would give rise to a loss of magnetic properties derived from heating, a phenomenon in any case temporary, since when it cools it would recover its initial properties again.
If you would like more information about magnetic drums, please do not hesitate to contact us.
Pressed magnets are the result of the bonding between thermoplastic binders and permanent magnet powders, i.e. ferrite, neodymium and/or samarium cobalt, and can be divided into isotropic magnets and anisotropic full density magnets.
The manufacturing process of this type of magnet is significantly different from the traditional sintering and gluing. Hot pressed magnets have fine glass grains after a series of unique manufacturing processes.
The magnetic properties of hot pressed magnets are much higher than those present in traditionally bonded magnets, even because it makes the neodymium sintered.
This type of magnets have an excellent resistance to heat, managing to withstand up to about 180deg C during operation. Hot pressing and deformation technology requires no orientation mechanism during the molding process. The flexibility and declination of its poles depends entirely on the magnetization process.
They have excellent mechanical properties that allow tight tolerances to be reached, facilitating their equilibrium and assembly. The waveforms of pressed magnets are determined by the magnetization process and their nanocrystalline structure and higher density is able to ensure that they have greater corrosion resistance.
Also, pressed magnets have certain disadvantages in relation to other types of magnets, because:
The investment in equipment is greater than other magnets.
The manufacturing process is more complex.
Production efficiency remains very low.
Freedom of form is limited.
Despite the magnetic properties of this type of magnet, which are close to the properties of sintered neodymium magnets, its value is even higher than that of this type of magnet. In fact, nowadays, the price of pressed magnets is an important element at the time of their manufacture.
Hot pressed magnets can help the smooth running engine, but they are punctually used in:
Electric power steering (EPS) of the motor.
AC / DC servo motor.
Power tools.
Pressed magnets have demonstrated the heat resistance described above in the hybrid cars of a major Japanese assembler, demonstrating that high coercitivity magnetic properties have been the best option for reducing the use of heavy rare earth elements.
Prepared samples of pressed magnets, to date, exhibit intrinsic coercivities of approximately 1200 kA / m, a remanence of around 690 mT and maximum BH values of approximately 90 kJ / m 3 . Careful studies of microstructures reveal that the magnets consist of Nd 2 Fe 14 B predominantly in the range of 0.1 μm⩽ x ⩽1.0 μm with a very small number of grains in the range of 10 μm ⩽ x ⩽35 μm.
These larger grains exhibit very regular morphology and are the result of very rapid growth of some of the smaller micrometric grains. B 8 ensures that the magnets have 12% neodymium-rich intergranular material and this low melting point phase has been found to aid the densification process.
This neodymium-rich material is very unevenly distributed throughout the hot pressed magnet and little evidence of its presence can be found among the grains of Nd 2 Fe 14 B.
This material enables the creation of more complex geometries. IMA currently manufactures this product for numerous customers such as motor manufacturers, magnetic encoders for household appliances, washers and motors, automotive, among others, so if you are interested in knowing more about the power of pressed magnets, do not hesitate to contact us.
The magnetic sweepers in forklifts are especially used in spaces such as airports, a large parking lot, or any business in which unwanted metals may appear, because they facilitate the work of cleaning debris from the floor, especially if they are sharpened as nails or scrap metal.
This type of debris can cause flat tires or, worse, could endanger the health and physical integrity of employees, customers or visitors.
A magnetic sweeper made of forklift magnets has been specifically created to ensure greater safety and eliminate any type of risk in any industrial sector.
There are two types of magnetic sweepers:
Magnetic sweeper with fork cavities. This type of forklift magnet sweeper has holes specially made for the forks of the forklift truck to be inserted and aid in attachment. The forks slide into the mounted top brackets which are easily locked manually.
Magnetic sweeper with orifice bolts. The eyelets on this variety of sweeper with forklift magnets allow it to be mounted elsewhere on the forklift truck or forklift and on things like gantry cranes, hanging chains or ropes. They can also be connected to industrial cleaning equipment or trolleys.
In both cases, they are ideal for keeping parking lots, container depots and warehouses free of nails, shavings, nuts and bolts, etc. Once the cleaning operation is complete, the forklift magnets can be removed for use at a later date.
Simple collection and release protocols allow metal fragments to be quickly collected and stored, cleaned and removed from where they can do harm.
Among the most important features of sweepers with magnets for forklifts stand out:
No service required.
They are robust in design and construction.
Designed to fit any forklift.
Width of magnetic area: 1200 mm.
Can be used on various types of surfaces.
Storage capacity.
The sweeper or broom with forklift magnets, can be made of stainless steel, so it has a higher resistance, is more comfortable to demagnetize and facilitates the method of attachment to a forklift. At IMA we have the right magnets for forklift magnet sweepers, so if you require a forklift magnet solution for your business, you can contact us by filling out the following questionnaire and we will get back to you as soon as possible.
The applications of neodymium magnets in electrical appliances are very specific, as they are for electric motors. Neodymium magnets are made of a combination of iron, boron and neodymium, so their resistance and the diversity of ways in which they can be produced, make their use in everyday life so common, that we can find them in almost any area of our day to day life.
As far as electrical appliances are concerned, neodymium magnets are basically used in audio equipment such as speakers, headphones and microphones. For example, the speakers are controlled by two magnets and an electric current. A mobile electromagnetic coil is suspended near a fixed magnet, and an electric current is pushed through the coil very quickly.
As the coil is charged, it is attracted by the magnet and repelled again, causing vibrations that amplify and become music to your ears. The microphones, of course, work under a similar principle, because when the coil moves through the magnetic field generated by the neodymium magnets, an electrical signal is generated, which reproduces itself as sound.
The smallest neodymium magnets can be found in electric toys that, of course, are entertainment for children and adults. In fact, many of the toys you have at home may have neodymium magnets inside, which is why there must be constant supervision of an adult when handling electric toys, since small neodymium magnets may present a risk of suffocation, so it is very important to know a little about the maintenance, handling and care of neodymium magnets.
Likewise, neodymium magnets can also be found in often small GPS units that are installed in vehicles or equipment that need to be tracked.
In addition, neodymium magnets also have uses in an engine, as well as in other areas of daily life they are found, for example, in:
Magnetic resonance images
Magnotherapy
Lifting large loads
Equipment levitation
Business exhibitions and signage
DIY projects
Home and wall decoration
Stationery and business supplies.
Jewelry
But, mostly, neodymium magnets, in addition to the previous examples, are very often utilized in:
Door locks. Doors in public or commercial spaces are often used as fire doors. Therefore, they should always be tightly closed. Strong magnets take over this task, even children can open a public fire door.
Engines and generators. Electric motors use a combination of electromagnets and permanent magnets to convert electrical energy into mechanical energy. A generator, on the other hand, converts mechanical energy into electrical energy by moving a conductor through a magnetic field.
Finally, in the industrial sector, neodymium magnets have very wide uses in automation, specifically in robotics and motion sensors.
In short, the applications of neodymium magnets, both in electronics and in other areas, are very common. Even their domestic use is also widespread, as much as in the elaboration of technological components, engines for escalators, wind generators, magnetic resonance equipment or the aerospace industry. In all these fields, and many others, we can find neodymium magnets nowadays.
Magnets play an important role in packaging systems, ensuring reliable product delivery and complying with rigorous quality control processes that are constantly evolving.
In fact, magnets in packaging systems are part of unique solutions that enable both the customer and the end user to receive reliable products. Packaging manufacturers and designers, as well as marketing agencies, have unanimously adopted magnets as their first choice when packaging products.
Magnets, in packaging systems, are mainly used in package closures. That is to say, to assure the packing or packed, magnets are placed that allow a closing the box that assures that the product will be inside it.
Packaging magnetic closures are made with neodymium magnets, one of the most powerful rare earth magnets, which add a high level of quality feel, while providing a solution that is easy to integrate, open and close, reliable and predictable, with wear-free performance.
Neodymium magnets are strong and compact magnetic materials, available with and without adhesive backing. Neodymium magnets used in packaging systems are nickel coated to protect against corrosion and provide maximum operating temperatures of 176ºF for standard magnets. Higher temperature resistance is possible with this type of magnet.
These neodymium magnets are usually magnetized conventionally through the thickness. Achieving perfect alignment in magnetism applications requires facing opposite poles.
Magnets in packaging systems are commonly used in packaging projects:
Products for personal use.
Cosmetic products.
Materials for specialized marketing.
CD, DVD and other electronic products.
Bags and handbags.
Some kind of industrial machinery and solutions.
Products of the food sector.
The incorporation of magnets in packaging systems allows cost savings, precisely in the assembly of tools during the integration with the package. Whether clearly visible or completely hidden from view, magnets offer almost unlimited potential for creating a durable, reusable high-end package that carries the company's brand far beyond the initial purchase of the product.
The use of magnets in packaging systems is increasing. There are many advantages and they are being exploited by creative designers and manufacturing companies.
It is very probable that, in a television package, that contains inside a remote control or, in another case, some product that integrates the software in a CD or others with cables contains inside the packing system a neodymium magnet.
In this case, for example, the box may contain small magnets that are integrated into the cover, while other steel lenses are incorporated into the latch to ensure that the reusable package opens and closes.
A good packaging design provides an airtightness that is key to the final quality of the product. This closure is transparent, secure and capable of unlimited action without significant change in performance. At IMA we manufacture magnets that simplify and optimize the design and implementation of a package closure. According to physical specifications and aesthetic design requirements, magnets aim to optimize package performance effectively. If you would like more information, please do not hesitate to contact us.
Permanent magnet generators improve the financial performance of wind power projects and are the answer for turbine manufacturers, who are looking for a powertrain that offers high efficiencies with partial load, greater availability and a simplified grid connection that protects the generator from any type of disturbance.
These permanent magnet generators, too, can be applicable to direct drive, medium speed and high speed systems.
A common view is that permanent magnet generators are applicable only to direct drive offshore wind turbines, where their use eliminates the potentially problematic gearbox. However, permanent magnet generators offer so many compelling advantages that they are now being designed as gearbox transmissions to operate at a wide range of output speeds.
Dual-powered induction generators have provided the wind power industry with many years of excellent service. However, the number of undeveloped Class I wind sites decreases with each passing year, while project developers demand improvements in plant reliability and availability.
In this regard, permanent magnet generators offer a wide range of performance advantages to wind farm developers and operators that can make a significant and positive difference to project economics.
For example, permanent magnet generators are incredibly flexible. Your design can be customized for:
Optimise the performance of the complete wind turbine powertrain.
Speed, efficiency, weight and cost are four fundamental and interdependent factors that can be varied to meet the objectives of the wind turbine OEMs.
The permanent magnet generator designer can exchange the properties and weights of magnet, stator copper and stator lamination to achieve the required objectives without the need for the turbine OEM to accept a standard, market-optimal, non-optimal generator.
The magnets in the rotor of a permanent magnet generator use rare earth metals. The magnets used in these generators generally contain ~ 30% Nd (neodymium) in weight, and most of the remaining weight is made up of low-cost ferrous materials.
Permanent magnet generators are flexible. They allow wind turbine designers to consider powertrains with a wide range of topologies, from conventional modular gearboxes and generator arrays to fully integrated systems (or hybrids) assembled within a single cabinet, and even direct drive systems that operate without a gearbox. Every topology has merits.
In addition, a conventional high-speed drive train with fully independent or modular gearbox and a permanent magnet generator appears in the layout of the modular drive train.
This gives the turbine OEM the maximum flexibility to select the suppliers of the gearbox and generator, as both are completely independent.
Finally, by integrating some components of the powertrain, the overall length and weight can be significantly reduced. This is achieved by combining the main bearing and gearbox for a medium or high speed shaft design, or by close coupling of the gearbox and generator as shown in the integrated powertrain layout.
All these features of permanent magnet generators make it possible to reduce costs in wind energy. If you want to know more about this technology, at IMA we can advise you on the magnetism solution that best suits your project. If you have questions, you can contact us.
No.155-1, North Jingu Road
Yinzhou Investment & Business Industrial
Ningbo, PR China 315104
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20080 Milan
Tlf: +39 (02) 94 00 137
Tlf: +39 (02) 94 00 609
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E-mail: contacto@imamagnets.com
