Thermal Fatigue of Roll Material

Hyperion smart hot rolling with carbide -rings

Minimizing Consequences of Thermal Fatigue

Thermal fatigue is the enemy of all roll materials for hot rolling. It causes cracks, which combined with corrosion and abrasive wear, shorten the service life of the pass forms.

As the thermal conductivity of cemented carbide is twice that of steel or cast iron, it is extremely important that efficient cooling is provided.

Minimize Cracking Progress

The phenomenon of cracking in the roll passform is a fact of life. However, its progress can be checked and poor effects can be minimized if you:

  • Provide adequate cooling (example image)
  • Schedule regrinding at correct intervals
  • Avoid overfilling
  • Use the correct cemented carbide grade.

 

The profitable use of cemented carbide rolls also depends on the training and commitment of the staff involved. Hyperion Materials & Technologies takes an active part in on-site training in roll maintenance, problem identification and solution suggestions. Contact your Hyperion sales person for help dealing with thermal fatigue.

 

Other Roll Solutions

 

 

Did you know you can recycle your cemented carbide with Hyperion?  Visit our recycling page or contact us for details.

 

*Cemented carbide is also known as solid carbide and tungsten carbide (WC).