Annealing stainless steel bread cutting saw blades

Objective

Anneal saw blades used for cutting bread, prior to hole punching. 

End Product

Saw blades

Equipment

• Ambrell 4.2 kW induction heating system equipped with a remote workhead containing one 1.00 µF capacitor.
• An induction heating coil designed and developed specifically for this application. 

Materials

38” (9.6mm) wide and .51” (12.9mm) wide continuous strips of  400 series stainless steel. 

Temperature

600°C (315.6°F)

Frequency

289 kHz

Testing

A three turn helical coil at a 45º angle is used to anneal a 1.2” (30.5mm) strip of saw blade prior to hole punching.

Benefits

Induction heating provides:

• Improved quality of blades at hole punching location
• Decreased scrap product
• Easily incorporated into existing production lines 

Image