Vacuum Induction Melting Furnace
benchtop micro vacuum induction melting furnace for high purity metal alloy R&D and laboratory casting
Item Number: TU-RL31
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Product Overview
This high-frequency vacuum induction melting system represents a critical advancement in benchtop metallurgical research and small-scale alloy development. Designed to meet the stringent demands of modern materials science, the system provides high-temperature melting and casting capabilities within a controlled vacuum or inert gas atmosphere. By integrating a solid-state high-frequency induction generator with a water-cooled vacuum chamber, this system allows researchers to melt, alloy, and cast a wide variety of metals and advanced materials. The compact design makes it an ideal fit for academic laboratories, industrial R&D facilities, and quality control departments that require high-purity thermal processing without the space requirements of production-scale furnaces.
The system is engineered to handle challenging materials including high-temperature alloys, precious metals, and reactive elements that are highly susceptible to oxidation when processed in air. Through the use of rapid electromagnetic induction heating, the unit achieves fast melting cycles while facilitating natural electromagnetic stirring of the molten pool, which ensures complete chemical homogenization. Users can easily perform melting, mixing, and casting operations within a single process cycle, maintaining the vacuum or gas environment from start to finish to prevent contamination. The system supports a wide range of crucible options to accommodate different melting temperatures and chemical compatibility requirements.
Built with premium industrial-grade components, the system offers exceptional reliability, precise power control, and long-term durability under demanding laboratory conditions. Every subsystem—from the water-cooled copper coils to the double-walled vacuum chamber—is manufactured to strict tolerance standards, ensuring consistent cycle-to-cycle performance and operator safety. The user-friendly interface allows for direct regulation of the induction power, enabling fine adjustment of the heating rate to suit various experimental protocols. Whether used for synthesis of novel alloys, purification of metals, or casting of test specimens, this system delivers the precise operational control needed to achieve reproducible, high-quality results.
Key Features
- Vacuum and Inert Gas Environment: The system maintains vacuum levels ranging from rough vacuum down to high-purity atmospheres, preventing oxidation, nitridation, and absorption of ambient gases during the melting cycle to ensure superior material purity.
- Electromagnetic Induction Stirring: The high-frequency electromagnetic field naturally induces a stirring effect within the molten metal, accelerating chemical homogenization and alloy mixing without requiring mechanical agitators or risking contaminant pickup.
- Integrated Tilt Pouring Mechanism: Features an externally operated, vacuum-sealed manual tilt-pouring lever that allows operators to cast the molten charge directly into a mold without breaking the chamber vacuum or disrupting the protective atmosphere.
- Double-Walled Water-Cooled Chamber: The high-strength 304 stainless steel chamber features a double-wall design for continuous water cooling, keeping the external surfaces safe to touch and preventing thermal distortion during high-temperature cycles.
- Solid-State Induction Power Supply: Equipped with an efficient, high-frequency induction generator that provides rapid power coupling, fast heating rates, and smooth adjustments from minimum to maximum output for precise temperature control.
- Shielded Viewport and Inspection Window: A quartz viewing window with an integrated manual shutter allows for continuous observation of the melt status and temperature measurement via optical pyrometry while protecting the glass from metallic vapors.
- Precise Gas Flow and Pressure Control: The system incorporates precision valves and pressure gauges to support vacuum evacuation, backfilling with inert gases (such as Argon or Nitrogen), and venting, allowing for customized atmospheric control.
- Multi-Level Safety Interlocks: Built-in sensors continuously monitor critical operating parameters including water flow rate, cooling water temperature, induction generator current, and vacuum chamber pressure to automatically shut down power in the event of an anomaly.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Superalloy Synthesis | Melting and alloying nickel, cobalt, and iron-based superalloys under deep vacuum conditions. | Prevents oxide inclusion formation and achieves chemical homogeneity. |
| Reactive Metallurgy | Thermal processing of reactive metals such as titanium, zirconium, and aluminum alloys in inert gas. | Eliminates atmospheric contamination, maintaining strict alloy purity. |
| Precious Metal Refining | High-precision melting and casting of gold, silver, platinum, and palladium alloys. | Minimal material loss with high-efficiency heating and clean recovery. |
| Thermoelectric Materials | Synthesizing intermetallic and compound semiconductors that require precise stoichiometric control. | Prevents vaporization of volatile components under closed gas atmospheres. |
| Solidification Research | Casting micro-ingots into water-cooled or heated molds to study grain refinement and solidification kinetics. | Enables reproducible microstructural analyses of test castings. |
| High-Purity Target Material Production | Fabrication of specialized sputtering targets and thin-film deposition materials in small batches. | Eliminates slag and gas inclusions for clean target deposition. |
| Nuclear Materials Testing | Small-scale metallurgical studies of high-density nuclear fuel simulants and cladding alloys. | Compact chamber footprint fits easily within glovebox or containment configurations. |
Technical Specifications
To meet diverse research requirements, the TU-RL31 series is available in several configurations optimized for different vacuum levels, power outputs, and melting capacities. Below are the technical specifications for the standard configurations of the TU-RL31 series.
| Parameter | TU-RL31-S (Standard Vacuum) | TU-RL31-H (High Vacuum) | TU-RL31-P (High Power) |
|---|---|---|---|
| Maximum Temperature | 1600°C (graphite crucible) / 1700°C (alumina) | 1700°C (alumina) / 2000°C (zirconia) | Up to 2200°C (zirconia/refractory metal) |
| Induction Power Output | 15 kW | 15 kW | 25 kW |
| Induction Frequency | 30 - 80 kHz | 30 - 80 kHz | 20 - 60 kHz |
| Melting Capacity (Steel) | 50 g to 200 g | 50 g to 200 g | 100 g to 500 g |
| Crucible Volume | 50 mL | 50 mL | 100 mL |
| Vacuum Pump Configuration | Rotary vane vacuum pump | Rotary + Molecular/Diffusion pump | Rotary + Diffusion pump |
| Ultimate Vacuum Level | $5.0 imes 10^{-1}$ Pa ($3.7 imes 10^{-3}$ Torr) | $1.0 imes 10^{-3}$ Pa ($7.5 imes 10^{-6}$ Torr) | $5.0 imes 10^{-3}$ Pa ($3.7 imes 10^{-5}$ Torr) |
| Chamber Leak Rate | $\le 1.0 \times 10^{-5}$ Pa·L/s | $\le 5.0 \times 10^{-7}$ Pa·L/s | $\le 1.0 \times 10^{-6}$ Pa·L/s |
| Atmosphere Gas Supply | Argon, Nitrogen (pure or mixed) | Argon, Nitrogen, Helium | Argon, Nitrogen, Helium |
| Gas Pressure Range | 0.02 MPa to 0.05 MPa positive pressure | 0.02 MPa to 0.08 MPa positive pressure | 0.02 MPa to 0.08 MPa positive pressure |
| Water Cooling Requirements | Flow rate $\ge 15$ L/min; Temp $\le 30$°C | Flow rate $\ge 20$ L/min; Temp $\le 25$°C | Flow rate $\ge 30$ L/min; Temp $\le 25$°C |
| Power Supply Requirements | 3-Phase AC 380V, 50/60 Hz, 20A | 3-Phase AC 380V, 50/60 Hz, 25A | 3-Phase AC 380V, 50/60 Hz, 45A |
| Chamber Dimensions (ID) | $\Phi 300$ mm x 350 mm | $\Phi 300$ mm x 350 mm | $\Phi 400$ mm x 450 mm |
| Mold Type Compatibility | Copper water-cooled mold / graphite mold | Copper water-cooled mold / graphite mold | Copper water-cooled mold / graphite mold |
Why Choose This Product
- Uncompromising Alloy Purity: Designed with high-purity vacuum seals and low-degassing chamber materials, this furnace guarantees an exceptionally clean melting environment, preventing the inclusion of oxides or tramp metals in your synthesized specimens.
- Precision Induction Technology: The advanced induction heating controller provides highly linear power adjustments, enabling precise control over thermal ramps, dwell times, and pouring temperatures for repeatable metallurgical results.
- Robust Safety Architecture: Engineered with multiple safety redundancy systems—including pressure relief valves, water flow sensors, and over-current protection—ensuring safe laboratory operation under high-temperature and vacuum conditions.
- Versatile Crucible Compatibility: The chamber layout and induction coil configuration support quick exchanges between graphite, alumina, zirconia, and boron nitride crucibles, letting researchers transition between different alloy systems with ease.
- Factory Support and Customization: Backed by our dedicated technical support team, we offer tailored coil designs, customized mold brackets, and integrated cooling chiller packages to match the specific demands of your research applications.
For more information on configuration options, custom crucible setups, or to request a detailed technical quotation, please contact our laboratory equipment specialists today.
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