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

Pros and cons of rare earth magnets.

In addition to their long-term stability, neodymium magnets provide the following advantages:

• They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
• They are noted for resistance to demagnetization induced by external magnetic fields,
• The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
• Neodymium magnets deliver maximum magnetic induction on a contact point, which increases force concentration,
• Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
• In view of the potential of accurate molding and customization to specialized projects, neodymium magnets can be produced in a broad palette of forms and dimensions, which expands the range of possible applications,
• Versatile presence in modern industrial fields – they are used in computer drives, electric drive systems, advanced medical instruments, also technologically advanced constructions.
• Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages of neodymium magnets:

• At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
• When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as 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 suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
• Due to limitations in creating nuts and complex forms in magnets, we recommend using a housing - magnetic holder.
• Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
• Due to neodymium price, their price exceeds standard values,

Maximum magnetic pulling force – what contributes to it?

The declared magnet strength refers to the limit force, obtained under optimal environment, specifically:

• with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
• possessing a massiveness of at least 10 mm to ensure full flux closure
• with an ideally smooth touching surface
• under conditions of no distance (metal-to-metal)
• for force applied at a right angle (in the magnet axis)
• at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Please note that the working load may be lower influenced by the following factors, starting with the most relevant:

• Distance – the presence of foreign body (paint, dirt, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
• Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
• Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be wasted into the air.
• Material composition – not every steel attracts identically. Alloy additives worsen the attraction effect.
• Plate texture – ground elements ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
• Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).

* Lifting capacity was assessed with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a minimal clearance {between} the magnet’s surface and the plate reduces the load capacity.