Induction welding has many important industrial applications. One example is the manufacture of airtight tubes, represented in
Question:
(a) What causes a current in the tube?
(b) Why is a high frequency like 10 kHz chosen, rather than the 120 Hz commonly used for power transmission?
(c) Why do the induced currents raise the temperature mainly of the seam, rather than all of the metal of the tube?
(d) Why is it necessary to bring the edges of the sheet together with the compression rollers before the seam can be welded?
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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