What is soft rubber magnet? What is the difference between the grades of soft rubber magnets?
The soft rubber magnet material is mainly made of ferrite magnetic powder mixed with rubber raw materials, so it has the magnetic force of the magnet and the softness of the rubber, the surface is wear-resistant and scratch resistant, and it is easy to roll up and store, so it is widely used in magnetic advertising products and educational supplies.
In terms of grade, it can be divided into two categories: equal squareness (RM1) and different squareness (RM2). Under the same size, the different squareness is stronger than the equal squareness, and the equal squareness is usually magnetized by one side multipole magnetization (one side has magnetic force), while the different squareness can be magnetized not only by one side multipole magnetization (two sides have magnetic force, one side is strong and one side is weak), but also by thickness magnetization (one side one pole).
The following table shows the magneto pneumatic characteristics of soft rubber magnets:
|Characteristic||Residual magnetic beam density||Magnetic retention||Internal magnetic force||Maximum magnetic energy product||Remarks|
The following are the physical properties of soft rubber magnets:
|Working temperature||-5 ℃ ~ +80 ℃||-40 ℃ ~ +100 ℃|
|Density||3.60~4.00 g/cm3||3.50~3.70 g/cm3|
|Tensile strength||20~100 Kg/cm3||75~90 Kg/cm3|
|Hardness||50~54 Hv||30~45 Shore D|