XT-4 magnetyzery CO i WODY użytkowej - XT-4 magnetizer

Pros as well as cons of rare earth magnets.

Besides their magnetic performance, neodymium magnets are valued for these benefits:

• They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
• Neodymium magnets remain exceptionally resistant to magnetic field loss caused by magnetic disturbances,
• A magnet with a shiny gold surface has better aesthetics,
• They are known for high magnetic induction at the operating surface, which affects their effectiveness,
• Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
• In view of the option of accurate molding and customization to custom requirements, NdFeB magnets can be produced in a wide range of forms and dimensions, which increases their versatility,
• Fundamental importance in modern technologies – they serve a role in computer drives, electric drive systems, advanced medical instruments, also modern systems.
• Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages of NdFeB magnets:

• Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
• When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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, when using outdoors
• Limited ability of producing threads in the magnet and complex shapes - preferred is cover - mounting mechanism.
• Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these products can disrupt the diagnostic process medical when they are in the body.
• With budget limitations the cost of neodymium magnets can be a barrier,

Maximum holding power of the magnet – what affects it?

Breakaway force is the result of a measurement for optimal configuration, taking into account:

• with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
• with a thickness of at least 10 mm
• characterized by smoothness
• without the slightest insulating layer between the magnet and steel
• during detachment in a direction perpendicular to the plane
• at standard ambient temperature

Determinants of lifting force in real conditions

In practice, the real power depends on a number of factors, presented from the most important:

• Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
• Angle of force application – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
• Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
• Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
• Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
• Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

* Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance {between} the magnet and the plate reduces the load capacity.