Note: Heating a steel tie down (loosen steel pin)

Objective:

Heat steel tie downs on containers to loosen steel pin so pin can rotate 

End Product:

Steel tie-down assembly

Equipment:

Ambrell 10 kW induction heating system, equipped with a remote workhead containing two 1.5 μF capacitors for a total of 0.75 μF
An induction heating coil designed and developed specifically for this application

Materials:

Steel tie-down assembly with a 2.5 in (63.5 mm) dia. flange
1 in (25.4 mm) dia. rod and pin ring approx 4 in (101.6 mm) OD
0.75 in (19.05 mm) thick steel 

Temperature:

1000 °F (538 °C)

Frequency:

282 kHz

Testing:

A single-turn helical coil is used to heat the assembly. The coil is placed around the pin and power is applied for 120 seconds. After heating, a steel rod is inserted in the pin ring, pressure is applied and the pin ring spins freely. 

Benefits:

  • Precise and accurate placement of heat without affecting surrounding areas

  • Much faster process time, from hours to minutes

  • Repeatable and consistent results

  • Even distribution of heating 

Heating a steel tie down (loosen steel pin)

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