MANUFACTURE OF AMORPHOUS ALLOY THIN STRIP OF EXCELLENT MAGNETIC PROPERTIES AND DEVICE THEREOF

摘要

PURPOSE:To effectively mass produce a thin strip of amorphous alloy having excellent magnetic properties by performing a consistent process by a method wherein a laser beam is made to irradiate sweepingly in the width direction of the thin strip while a thin strip of solidified metal is being cooled, and a local fused part is introduced. CONSTITUTION:The melted alloy fused in the crucible 1 to be used for melting of an alloy is jetted to the outer circumferential surface of a rotating cooling roll 2 through a nozzle 9. A solidified thin strip 7 is reeled up to a reeling roll 8 through the intermediary of two guide rolls 3. The laser beam emitted from a laser beam oscillating device 4 is focused on the surface of the thin strip by a focussing lens 5, and it is focussed thereon. The sweeping of the laser beam in the direction of width reciprocates in the width direction of the thin strip by the oscillating movement of a total reflection mirror 6.