Patent ID: 9604278
Date: 2017-03-28
CPC Classifications: B22D,C21D,C22C,C22F

Claim:
1. A method of producing an amorphous alloy ribbon, comprising: a step of producing an amorphous alloy ribbon by discharging a molten alloy through a rectangular opening of a molten metal nozzle having a molten metal flow channel along which the molten alloy flows, the opening being an end of the molten metal flow channel, onto a surface of a rotating chill roll, wherein, among wall surfaces of the molten metal flow channel, a maximum height Rz(t) of a surface t, which is a wall surface that is parallel to a flow direction of the molten alloy and to a short side direction of the opening, is 10.5 μm or less, and wherein, among wall surfaces of the molten metal flow channel, a maximum height Rz(s) of a surface s, which is a wall surface that is parallel to a flow direction of the molten alloy and to a long side direction of the opening, is from 20.0 μm to 60.0 μm.