How Can I Increase the Flux Density of My Electromagnet?

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SUMMARY

The discussion focuses on increasing the flux density (B) of an electromagnet, which is currently limited to 1 tesla due to core saturation. The Lorentz force equation, F = BIL, is referenced for force development. Suggestions include using plain old iron, which can achieve flux densities of 1.5 to 2 tesla, and considering NdFeB (neodymium-iron-boron) permanent magnets, which can exceed 1.5 tesla. These materials provide viable alternatives for enhancing electromagnet performance.

PREREQUISITES
  • Understanding of the Lorentz force equation (F = BIL)
  • Knowledge of magnetic saturation in materials
  • Familiarity with electromagnet design principles
  • Basic concepts of permanent magnets, specifically NdFeB
NEXT STEPS
  • Research the properties of plain old iron for electromagnet applications
  • Explore the use of NdFeB magnets in electromagnet design
  • Investigate methods to prevent core saturation in electromagnets
  • Learn about alternative materials that can achieve higher flux densities
USEFUL FOR

Engineers, physicists, and hobbyists involved in electromagnet design and optimization, particularly those seeking to enhance magnetic performance beyond standard limitations.

torpedo475
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Hi,

I am trying to design an electromagnet. I am utilising the lorentz force equation to develop the force. i.e. F= BIL.

The problem is I can't increase value of B beyond 1 tesla as the core saturates. Also high current is not feasible.

Can anyone suggest how to increase the value of flux density (B). Is there some other material present that can give flux density more than 1T.

Anticipating a positive reply.

Thanks is advance.
 
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Plain old iron should go up to 1.5 to 2 tesla.
 
You don't say what it's for so I don't know if this is at all applicable but you can get NdFeB permanent magnets quite cheaply nowadays. They go up to over 1.5T.
 

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