Patent ID: 9053847
Filing Date: 2015-06-09
Classification: B22D,C21D,C22C,H01F

Abstract:
1. An iron-based amorphous alloy broad ribbon, which is manufactured with single-roll quenching method, wherein the width of broad ribbon is 220-1000 mm, the thickness is 0.02-0.03 mm, the transversal thickness deviation is smaller than ±0.002 mm, a lamination factor is larger than 0.84, the saturation magnetic-flux density is larger than 1.5 T, the iron loss is smaller than 0.20 W/kg under the conditions that the maximum magnetic-flux density is 1.3 T and the frequency is 50 Hz, an exciting power is smaller than 0.50 VA/kg, wherein the transversal flatness deviation of a cooling roll ( 4 ) for manufacture process is smaller than 0.02 mm, the surface roughness Ra is smaller than 0.0005 mm, wherein the lamination factor refers to a ratio of true cross section area of amorphous alloy materials and cross section area of contour shape when multiple layers of amorphous alloy broad ribbon are stacked together, and wherein the exciting power refers to a product of exciting current and voltage of winding around a magnetic core when the core is excited to a pre-determined magnetic flux density by the winding.