Method for preparing biphase rare-earth permanent magnet material using hydrogenation heat treatment process
A rare earth permanent magnet and heat treatment technology, which is applied in the manufacture of magnetic materials, magnetic objects, inductors/transformers/magnets, etc. The problem is that the production equipment and process are simple and simple, the content of rare earth elements is low, and the cost is low.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0023] Using Fe, Nd, Dy and 20wt% B-Fe alloy with a purity of 99.9% as raw materials, according to Nd 8.5 Dy 1 Fe 84.5 B 6 ratio, put it into the magnetic levitation melting furnace, and evacuate to 10 -3 Pa, then pass through 1.2×10 5 The high-purity argon gas of Pa is smelted three times under the protection of argon gas to ensure that the ingot with uniform composition is obtained. In order to ensure that the composition of the ingot basically meets the design composition, attention must be paid to the loss of rare earth elements during the smelting process. Then, the alloy ingot is put into the quick quenching furnace, and the vacuum is evacuated until the vacuum degree in the quick quenching furnace cavity is 10 -3 Pa, then pass through 0.5×10 5 Pa high-purity argon gas, after the ingot is arc-melted under the protection of high-purity argon gas, it is sprayed onto a molybdenum roller with a surface speed of 35m / s to obtain a rapid quenching alloy. Under the protect...
Embodiment 2
[0025] Using Fe, Nd, Pr, Zr and 20wt% B-Fe alloy with a purity of 99.9% as raw materials, according to Nd 3.6 PR 5.4 Fe 84 Zr 1 B 6 ratio, put it into the magnetic levitation melting furnace, and evacuate to 10 -3 Pa, then pass through 1.2×10 5 The high-purity argon of Pa is smelted three times under the protection of argon to ensure that the ingot with uniform composition is obtained. In order to ensure that the composition of the ingot basically meets the design composition, attention must be paid to the loss of rare earth elements during the smelting process. Then, the alloy ingot is put into the quick quenching furnace, and the vacuum is evacuated until the vacuum degree in the quick quenching furnace cavity is 10 -3 Pa, then pass through 0.5×10 5 Pa high-purity argon gas, after the ingot is arc-melted under the protection of high-purity argon gas, it is sprayed onto a molybdenum roller with a surface speed of 35m / s to obtain a rapid quenching alloy. Under the prote...
Embodiment 3
[0027] Using Fe, Nd, Co, Cr and 20wt% B-Fe alloy with a purity of 99.9% as raw materials, according to Nd 12.5 Fe 69.5 co 10 Cr 2 B 6 ratio, put it into the magnetic levitation melting furnace, and evacuate to 10 -3 Pa, then pass through 1.2×10 5 The high-purity argon gas of Pa is smelted three times under the protection of argon gas to ensure that the ingot with uniform composition is obtained. In order to ensure that the composition of the ingot basically meets the design composition, attention must be paid to the loss of rare earth elements during the smelting process. Under the protection of high-purity argon, the ingot is broken with a crusher, and then the ingot powder with a particle diameter of less than 110 microns is sieved for high-energy ball milling (the particle diameter is preferably 50-90 microns). Under a protective atmosphere, the sieved ingot powder and iron powder (99.9% in purity and less than 15 microns in particle diameter) are uniformly mixed, wher...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com