Fine grain rare earth alloy cast strip, preparation method thereof, and a rotary cooling roll device
US12305265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Dec 23, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/144
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An alloy cast strip preparation method includes a melting process and a casting cooling process. The melting process includes controlling a power of an induction melting furnace to perform a cyclic heat treatment to completely melt an alloy raw material before a surface temperature of a melt obtained by melting the alloy raw material is raised to 1300° C., and, after the alloy raw material is melted, adjusting the power of the induction melting furnace to stabilize the surface temperature of the melt at a temperature in a range from 1400° C. to 1500° C. The casting cooling process includes performing casting cooling on the melt arranged on a surface of a rotary cooling roll to obtain an alloy cast strip while controlling a surface linear velocity of the rotary cooling roll to be from 1.5 m/s to 2.25 m/s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.