A high speed process has been developed that refines the magnetic domain size in transformer steel. This process utilizes a CW Nd:YAG laser scanned across the material to cause refinement while not affecting the insulative coating on the steel sheet. The result is a steel that has anywhere from 2 to 14% lower energy loss when used in a core of a transformer.
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© 1985 Laser Institute of America.
1985
Laser Institute of America
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