What is LD ratio

What is LD ratio
Time:2016-12-03 From:
L/D is a ratio to analyze the shape of a magnet, and it is a very important parameter to judge the temperature resistance ability of the magnet basically. 
 
Normally, we advise L/D ratio>0.5  (≥0.7 will be even better ) 
 
L/D ratio was calculated as follow:
 
(1) e g, D10*6  disc magnet, magnetized direction is 6,  its L/D ratio: 6/10 = 0.6, it has a good L/D ratio,  it would stand the high temperature as we designed.
 
(2) e g, 15*15*3 block magnet, magnetized direction is 3, its L/D ratio: 3 /(2* =  3 / 16.92 = 0.17,  L/D ratio is very low,so it would not stand the high temperature as we designed, we have to revise something to improve it.
 
For more details, please consult our professional engineers.
Previous:  What main factors will influence the magnet property? Next:  Production process of NdFeB magnet
Product Catalog
Products