Induction Hardening steel screw threads or steel nails

ObjectiveHeat steel roofing screw to 1650 ºF to harden the threads
Material Steel roofing screws of varying diameters less than 1.25” (31.75mm) diameter, 5” (127mm) long
Temperature:1650 ºF (899 ºC)
Frequency:291 kHz
Equipment
• Power of 6 kW induction heating system, such as UM-05AB-UHF,UM-06AB-UHF, equipped with a remote work head containing two 0.33μF capacitors for a total of 0.66μF
• An induction heating coil designed and developed specifically for this application.
Process A five turn helical coil is used heat the screw threads. The screw is placed in the coil, heat is applied for 8 seconds to achieve a 2” long zone at the required hardness.
Results/BenefitsInduction heating provides:
• Very rapid heating, faster production rates, efficient
• Ability to incorporate into existing production lines
• Repeatable, consistent results
• Even distribution of heating