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Induction Annealing a Metal Plate

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A client contacted THE LAB at Ambrell because they wanted to replace their torch annealing process with induction. Along with a torch being inefficient and inconsistent, it took the client five minutes to reach the target temperature of 1,300 °F (704 °C). They were hoping to achieve a much shorter heating time along with enjoying better safety, efficiency and consistency. 

THE LAB determined that an Ambrell EASYHEAT 2.4 kW, 150-400 kHz induction heating system with a single position multiple-turn helical coil would be the right solution for this application. Initial tests were conducted to optimize the power delivered to the part. It was observed that it took about 30 seconds to heat the plate to temperature.

Cutting the heating times from five minutes to 30 seconds is an enormous gain, certainly meeting the client's objectives. Induction is also highly repeatable and isn't dependent on operator skill like a torch. Also, with no open flame, induction results in a safer, cooler work environment for nearby employees. Induction also doesn't use gas, so it contributes to a company's electrification initiative. Finally, EASYHEAT induction systems are small, as is the workhead, making it ideal for any manufacturing process with limited floor space.

To read about other annealing applications tested by THE LAB at Ambrell, visit our annealing applications page. And, if you have an application that could benefit from induction heating, you should consider free parts testing. We offer remote lab service, in-person testing, or you can simply send in your parts, we'll then test them, send a lab report, and return them for your inspection.

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