ZK XLINK 1026 elementów - construction toy
construction toy
Catalog no 260214
GTIN: 5906301814399
Weight
1513 g
79.90 ZŁ with VAT / pcs + price for transport
64.96 ZŁ net + 23% VAT / pcs
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ZK XLINK 1026 elementów - construction toy
Magnetic properties of material
Physical properties of NdFeB
Shopping tips
Advantages as well as disadvantages of neodymium magnets NdFeB.
Apart from their consistent holding force, neodymium magnets have these key benefits:
- They retain their magnetic properties for around 10 years – the drop is just ~1% (in theory),
- They are very resistant to demagnetization caused by external magnetic fields,
- In other words, due to the shiny nickel coating, the magnet obtains an stylish appearance,
- They have extremely strong magnetic induction on the surface of the magnet,
- Thanks to their enhanced temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C or more,
- The ability for custom shaping as well as customization to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which extends the scope of their use cases,
- Significant impact in new technology industries – they find application in hard drives, rotating machines, healthcare devices along with other advanced devices,
- Thanks to their efficiency per volume, small magnets offer high magnetic performance, while occupying minimal space,
Disadvantages of NdFeB magnets:
- They are prone to breaking when subjected to a heavy impact. If the magnets are exposed to mechanical hits, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from damage and increases its overall robustness,
- High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent deterioration in performance (depending on form). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
- They rust in a humid environment. For outdoor use, we recommend using moisture-resistant magnets, such as those made of polymer,
- Limited ability to create complex details in the magnet – the use of a external casing is recommended,
- Potential hazard due to small fragments may arise, if ingested accidentally, which is important in the family environments. Furthermore, small elements from these magnets may interfere with diagnostics once in the system,
- In cases of tight budgets, neodymium magnet cost may be a barrier,
Magnetic strength at its maximum – what it depends on?
The given holding capacity of the magnet means the highest holding force, assessed in the best circumstances, that is:
- with mild steel, serving as a magnetic flux conductor
- of a thickness of at least 10 mm
- with a smooth surface
- with no separation
- under perpendicular detachment force
- under standard ambient temperature
Lifting capacity in real conditions – factors
Practical lifting force is dependent on elements, listed from the most critical to the less significant:
- Air gap between the magnet and the plate, because even a very small distance (e.g. 0.5 mm) causes a drop in lifting force of up to 50%.
- Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
- Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
- Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
- Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
- Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.
* Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance {between} the magnet’s surface and the plate decreases the lifting capacity.
Exercise Caution with Neodymium Magnets
Neodymium magnets should not be near people with pacemakers.
In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.
Under no circumstances should neodymium magnets be brought close to GPS and smartphones.
Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.
Neodymium magnetic are highly susceptible to damage, leading to their cracking.
Neodymium magnets are fragile and will crack if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.
The magnet is coated with nickel - be careful if you have an allergy.
Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.
Neodymium magnets can demagnetize at high temperatures.
Even though magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.
Neodymium Magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant injuries.
Magnets will attract each other within a distance of several to around 10 cm from each other. Remember not to place fingers between magnets or in their path when they attract. Magnets, depending on their size, are able even cut off a finger or alternatively there can be a severe pressure or a fracture.
Neodymium magnets are the strongest magnets ever invented. Their strength can surprise you.
Familiarize yourself with our information to properly handle these magnets and avoid significant swellings to your body and prevent damage to the magnets.
Neodymium magnets should not be in the vicinity children.
Neodymium magnets are not toys. Be cautious and make sure no child plays with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.
Do not place neodymium magnets near a computer HDD, TV, and wallet.
Strong fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.
Dust and powder from neodymium magnets are flammable.
Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.
Safety precautions!
To show why neodymium magnets are so dangerous, see the article - How very dangerous are powerful neodymium magnets?.