XT-6 magnetyzery do silników - BENZYNA i LPG + olej - XT-6 magnetizer

Strengths as well as weaknesses of NdFeB magnets.

Besides their immense magnetic power, neodymium magnets offer the following advantages:

• They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
• They possess excellent resistance to weakening of magnetic properties as a result of external magnetic sources,
• By covering with a reflective layer of nickel, the element has an professional look,
• Neodymium magnets ensure maximum magnetic induction on a small surface, which increases force concentration,
• Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
• Due to the possibility of precise shaping and customization to individualized projects, magnetic components can be created in a broad palette of shapes and sizes, which expands the range of possible applications,
• Significant place in advanced technology sectors – they are utilized in hard drives, electromotive mechanisms, medical devices, and multitasking production systems.
• Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in miniature devices

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

• Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
• When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
• Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
• Due to limitations in creating threads and complicated forms in magnets, we recommend using a housing - magnetic mechanism.
• Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these products can be problematic in diagnostics medical when they are in the body.
• Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The specified lifting capacity concerns the limit force, recorded under laboratory conditions, specifically:

• with the use of a sheet made of special test steel, ensuring maximum field concentration
• whose transverse dimension reaches at least 10 mm
• characterized by smoothness
• with direct contact (no impurities)
• for force applied at a right angle (pull-off, not shear)
• in neutral thermal conditions

Lifting capacity in real conditions – factors

Real force is influenced by specific conditions, mainly (from most important):

• Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
• Direction of force – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
• Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
• Plate material – mild steel gives the best results. Alloy steels decrease magnetic properties and holding force.
• Smoothness – ideal contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
• Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

* Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the holding force is lower. Additionally, even a small distance {between} the magnet’s surface and the plate decreases the holding force.