Overview of Magnetic Levitation Melting Technology

  Magnetic levitation melting is a melting technology based on vacuum induction melting, which uses electromagnetic force to keep the molten pool suspended. It is a key advanced material preparation technology.Suspension schematic: Outer ring – electromagnetic field sensor; Middle layer – water-cooled copper crucible; Inner ball – suspended molten pool.

Advantages of Magnetic Levitation Melting Technology

1. Completely eliminates contamination of molten pool by crucible materials, realizing nearly pollution-free melting.

2. Breaks the melting temperature limit of crucible materials, achieving ultra-high temperature melting.

3. Provides purification effect and electromagnetic stirring; residual materials can be fully recycled.

Applicable Materials

  Reactive metals, refractory metals, rare precious metals, high-purity/ultra-high-purity metals, titanium-containing alloys, non-metallic compounds, semiconductor materials, superconducting materials, single crystals, functional materials, complex alloys (high-entropy alloys, amorphous alloys, giant magnetostrictive alloys, magnetocaloric alloys, etc.).

Core Advantages (Eliminating Crucible Contamination)

1. Contactless suspension cuts off crucible contamination from the sourceNo physical contact between sample and crucible during melting, preventing impurity release and diffusion, greatly improving material purity to meet ultra-high purity requirements of semiconductors and superconductors.

2. Reduces chemical reaction impurities and secondary pollutionAvoids high-temperature reactions between crucible and melt, reducing oxide impurities. For titanium alloy smelting, oxygen content can be controlled below 50 ppm.

3. Enhances comprehensive material propertiesImproves strength, conductivity, corrosion resistance and stability. Creep resistance of aerospace superalloys increases by over 30%; superconducting critical temperature rises by 5–8 K.

4. Simplifies post-processing, reduces cost and improves efficiencyEliminates complex purification steps, cuts production cost by over 30% and raises efficiency by 50%, avoiding secondary performance degradation.

5. Adapts to high-end material fields and solves industrial bottlenecksWidely used in semiconductor Si/Ge, superconducting Nb-Ti alloy, aerospace Ti-Al alloy, gradually replacing traditional crucible melting.

Conclusion

Magnetic levitation melting furnace solves crucible contamination in traditional smelting via contactless suspension, low impurity, high purity and simplified process. It is a core technology for high-performance materials in semiconductors, superconductors and aerospace.