3 .3 The Advantages of High Magnetic Saturation 



3.3.1 The Magnetics of Materials 



Wire ropes are made of carbon steel which exhibit 

 Ferromagnetism and Hysteresis. A magnetic induction 

 curve for this type of material is shown in Figo 3.8, 



Slope=permeability 



•-H 



Fig. 3.8 Magnetic induction curve for carbon steel 



The slope of the B-H curves at any point is called the 

 permeability U =B/H. The value of /I changes with the 

 slope of the B-H curve. At flux level Bs the material 

 is magnetically saturated andu. drops to a very low value, 



A-13 



