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Case study NTN-SNR Roulements - Simulation of the induction hardening process with FORGE®

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posted on January 31 2019


NTN-SNR Roulements, world leader for bearings

Based in Annecy (France), NTN-SNR Roulements is world leader in precision engineering especially for bearings, constant-velocity joints, linear modules, distribution rollers and suspension parts. Its activity is primarily automobile-oriented, and other sectors in industry such as aeronautics, rail, and the farming and mining sectors.

Process Development Engineer at NTN-SNR Roulements, Victor Lejay uses FORGE® simulation software to validate and optimize the various material forming processes used in his company. He agreed to share with us one of his biggest challenges and how FORGE® helped him to find a solution.

The challenge: validate the induction hardening simulation process

In order to manufacture C56 steel bearing rings, NTN-SNR Roulements wanted to use the FORGE® simulation software to validate its induction hardening process.

To be more precise, NTN-SNR wished to:

  • determine the generator setpoints: intensity of the current, power, frequency
  • predict  the metallurgical properties of the part during and after quenching: residual stresses, distorsions...


The solution: using a FORGE® functionnality to provide a complete description of the process

The generator has been integrated into the simulation, allowing to deduce the ideal frequency and intensity of the current and to determine the transformation point of the generator.

Furthermore, FORGE® has two solvers of wich the first one solves the electromagnetic equations and the second one solves the thermal-mechanical-metallurgical equations, which are coupled to update the electromagnetic properties of the part throughout the process.

« The FORGE® solution is predictive because the parameters of the generator
are used as they are as input data in the simulation for predicting the
metallurgical properties of the part»

-Victor Lejay, Process Development Engineer 
at NTN-SNR Roulements


To better understand the challenge and the benefits of this solution, 
we invite you to read the complete case study:
Read the case study

Contact us if you wish to have further information
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