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

Advantages and disadvantages of neodymium magnets.

Besides their high retention, neodymium magnets are valued for these benefits:

• They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (based on calculations),
• Magnets very well defend themselves against demagnetization caused by ambient magnetic noise,
• Thanks to the smooth finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
• Magnets have huge magnetic induction on the outer side,
• Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
• Possibility of exact machining and adapting to specific conditions,
• Huge importance in advanced technology sectors – they are commonly used in hard drives, electric motors, medical devices, and multitasking production systems.
• Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages of NdFeB magnets:

• Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
• We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
• Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
• Limited possibility of producing nuts in the magnet and complex forms - recommended is cover - mounting mechanism.
• Health risk to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
• With large orders the cost of neodymium magnets can be a barrier,

Optimal lifting capacity of a neodymium magnet – what affects it?

The specified lifting capacity concerns the limit force, obtained under optimal environment, specifically:

• with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
• whose thickness equals approx. 10 mm
• with an polished contact surface
• without any insulating layer between the magnet and steel
• for force applied at a right angle (in the magnet axis)
• at room temperature

Lifting capacity in practice – influencing factors

Effective lifting capacity impacted by specific conditions, such as (from most important):

• Distance (between the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
• Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
• Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
• Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
• Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
• Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

* Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet’s surface and the plate reduces the lifting capacity.