Note: Preheating for forging of steel pins
Objective:
To heat magnetic steel pins (spokes) for forging on a rim without heat treating and weakening the rim. Previously, a torch was utilized and the heating time was 20 seconds.
End Product:
Wheel rim spokes
Equipment:
To heat magnetic steel pins (spokes) for forging on a rim without heat treating and weakening the rim. Previously, a torch was utilized and the heating time was 20 seconds.
Materials:
9/16 in (14 mm) steel pins
Temperature:
2,000 °F (1,093 °C)
Frequency:
294 kHz
Testing:
A single=position three-turn helical coil was used, and the part was placed under the coil. The part was heated to the desired temperature within just seven seconds.
Benefits:
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Fast, precise heating of the pinĂÂÄÂĂÂĂÂĂÂÄÂĂÂĂÂĂÂÄÂĂÂ 2 minutes and 36 seconds were saved on heating all of the rim"s pins when compared to using a torch.
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The rim was not heated, which maintained its strength and durability.
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Energy was saved due to the reduction in heating time.
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There is more repeatability with induction when compared to using a torch.
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