Advantages of Electrode Induction Gas Atomization (EIGA) Technology for Titanium Powder Production

Electrode Induction Gas Atomization (EIGA) is a highly efficient process for producing high-performance titanium alloy powders. Its core advantages are as follows:

1. High sphericity and excellent flowability

The EIGA process, through electrode induction melting combined with inert gas atomization, can produce titanium powder with extremely high sphericity (sphericity > 95%). The powder has a smooth surface, low porosity, and flowability (≤25s/50g) significantly better than non-spherical powders produced by traditional hydrogenation-dehydrogenation methods. This characteristic allows for uniform powder spreading in 3D printing (such as SLM, EBM processes), improving the density and mechanical properties of the formed parts.

2. Low oxygen content and high purity

Because the entire process is completed under inert gas (such as argon) protection, the EIGA process avoids the oxidation contamination of titanium powder. The oxygen content can be stably controlled below 0.15%, and the nitrogen content is <0.05%, meeting the standards for aerospace-grade titanium powder (such as AMS 4999). Compared with the hydrogenation-dehydrogenation method (where oxygen content is easily exceeded), its chemical purity is more suitable for high-demand applications such as aerospace and medical implants.

3. Controllable particle size distribution

EIGA technology can precisely control the powder particle size range (for example, 15-53μm or 53-150μm) by adjusting atomization parameters (such as gas pressure and melt temperature), adapting to the needs of different additive manufacturing processes (such as selective laser melting requiring fine powder and electron beam melting requiring coarser powder).

4. No crucible contamination risk

Using consumable electrode melting eliminates the need for ceramic crucibles, completely avoiding contamination of the titanium melt by crucible materials in traditional atomization methods, ensuring extremely low impurity content in the powder.

5. Suitable for high-end manufacturing fields

With its high purity, narrow particle size distribution, and excellent flowability, EIGA titanium powder has become a core raw material for key components such as aerospace engine blades, complex aerospace components, and personalized orthopedic implants, particularly in applications requiring high fatigue strength and corrosion resistance.

Industry Applications

The products have been widely used in melting, heating, quenching, high-temperature sintering, brazing, hot-fitting processing, semiconductor purification and other thermal processing occasions; serving the petroleum and natural gas, thermal power and nuclear power, metal casting, iron and steel metallurgy, automobile, engineering machinery, wind/hydropower generation, railway, aerospace, 3D metal printing, precious metals, cemented carbide, solar thin-film batteries and other industries.