XT-5 magnetyzery do silników - DIESEL + olej - XT-5 magnetizer

Strengths and weaknesses of NdFeB magnets.

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

• They retain magnetic properties for almost 10 years – the drop is just ~1% (in theory),
• They are noted for resistance to demagnetization induced by presence of other magnetic fields,
• The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
• Magnets are distinguished by exceptionally strong magnetic induction on the surface,
• Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
• Thanks to the potential of flexible forming and adaptation to individualized needs, NdFeB magnets can be manufactured in a wide range of geometric configurations, which amplifies use scope,
• Wide application in high-tech industry – they are commonly used in HDD drives, brushless drives, medical equipment, also multitasking production systems.
• Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

• They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
• NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
• When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
• We recommend cover - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex forms.
• Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small components of these products are able to disrupt the diagnostic process medical in case of swallowing.
• With mass production the cost of neodymium magnets is economically unviable,

Maximum lifting force for a neodymium magnet – what it depends on?

The lifting capacity listed is a theoretical maximum value performed under the following configuration:

• with the contact of a sheet made of low-carbon steel, ensuring full magnetic saturation
• with a thickness of at least 10 mm
• with a plane free of scratches
• without the slightest air gap between the magnet and steel
• for force acting at a right angle (in the magnet axis)
• in neutral thermal conditions

Magnet lifting force in use – key factors

It is worth knowing that the working load may be lower subject to elements below, in order of importance:

• Gap (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
• Angle of force application – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
• Steel thickness – insufficiently thick steel does not close the flux, causing part of the power to be lost into the air.
• Chemical composition of the base – mild steel gives the best results. Alloy admixtures lower magnetic permeability and lifting capacity.
• Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
• Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

* Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the lifting capacity is smaller. Additionally, even a small distance {between} the magnet and the plate lowers the load capacity.