1. Overview of Equipment and Application Fields

The BZ4 Vacuum Induction Smelting Furnace is a high-end experimental smelting system integrating vacuum induction heating, mechanical physical stirring, and secondary vacuum feeding. Specifically engineered to address common challenges in traditional smelting processes such as oxidation inclusions, compositional segregation, and insufficient density, this equipment ensures the purity and uniformity of molten metal through induction melting under high vacuum conditions and forced convection via mechanical stirring. It is particularly suitable for the preparation of precious metals (gold, silver), non-ferrous metals (copper), and special alloys with stringent performance requirements.

The BZ4 system not only inherits the advantages of induction melting—rapid temperature rise and high efficiency—but also innovatively incorporates a mechanical stirring system. This system performs vigorous physical stirring of the melt during the melting process, eliminating stratification caused by density differences and achieving microscopic-level uniformity in alloy element distribution. Additionally, its vacuum secondary feeding design allows for the addition of oxygen-sensitive elements or composition adjustments while maintaining a vacuum environment, completely preventing oxidation losses from air exposure. Equipped with an advanced PLC control system, the equipment enables automated and intelligent melting processes, supports 24-hour continuous operation, and significantly enhances the efficiency of scientific research experiments and pilot-scale production.

Widespread application areas:

· Research institutes and university laboratories: For the development of novel alloy materials, research on physical properties of metals, and preparation of small-batch high-purity samples.

· New energy industry: high performance battery electrode materials, hydrogen storage alloys, melting and modification of magnetic materials.

· Aerospace: Prototype manufacturing and testing of critical components including high-temperature alloys, lightweight high-strength aluminum alloys, and titanium alloys.

· The semiconductor industry: preparation of high purity metal targets and special electronic packaging materials.

· Jewelry: We provide high-precision melting and purification services for precious metals including K gold, platinum, and silver, guaranteeing flawless color and purity.

· Nonferrous metal smelting: homogenized melting of complex alloy compositions such as copper alloys and nickel-based alloys.

2. Core Functional Highlights

Mechanical and Physical Mixing System-Ultimate Uniformity

o Forced convection mixing: Equipped with a high-precision mechanical stirring device, it provides continuous and stable physical stirring of molten metal during the smelting process. This effectively overcomes gravitational segregation caused by differences in metal specific gravity, ensuring uniform distribution of alloy elements throughout the melt.

o Enhance color uniformity: Through vigorous stirring, eliminate localized enrichment or depletion of components, ensuring highly consistent chemical composition, microstructure, and physical properties in the final casting, thereby significantly improving product pass rate and performance stability.

o Promote impurity floating: the stirring effect helps the gas and non-metallic inclusions in the melt to float up to the slag layer quickly, which is easy to remove and further improve the purity of the metal.

Vacuum Secondary Feeding Technology-Full Process Anti-Oxidation

o Anoxic environment feeding: The innovative vacuum secondary charging chamber design enables users to continuously add highly reactive elements (e.g., rare earths, magnesium, aluminum) or perform precise compositional adjustments to the melt while maintaining high vacuum conditions in the main smelting chamber.

o Prevent oxidation loss: The entire feeding process requires no vacuum breaking, completely isolates air to prevent oxidation and burn-off of precious alloy elements, improves raw material utilization, and ensures precise control of the chemical composition of the finished product.

o Flexible process optimization: Supports multi-stage feeding processes to meet the stringent requirements of complex alloy formulations regarding feeding sequence and temperature, providing significant process flexibility for new material development.

Vacuum Induction Smelting of High Density and High Quality

o High vacuum environment: The entire smelting process is conducted under high vacuum conditions, effectively removing harmful gases such as hydrogen, nitrogen, and oxygen from the melt, preventing porosity formation, and significantly enhancing the density and compactness of the final product.

o Induction heating is highly efficient: It directly generates heat within the metal using electromagnetic induction, achieving rapid temperature rise, high thermal efficiency, and precise temperature control, thereby preventing grain coarsening caused by overheating.

o Extensive applicability: Suitable for melting gold, silver, copper, iron and their alloys, meeting the processing requirements of metals with varying melting points and viscosities.

Intelligent PLC Control and Continuous Operation Capability

o PLC Automation Control: Featuring an industrial-grade PLC system with an integrated touchscreen interface, this solution enables users to intuitively set and monitor critical parameters including melting temperature, stirring speed, vacuum level, and feeding duration. The straightforward operation streamlines processes and minimizes human error.

o 24/7 continuous operation: The equipment features a robust structural design and efficient cooling system, enabling uninterrupted 24-hour operation under continuous load. This significantly boosts production capacity, meeting the demands of high-intensity experiments or small-batch manufacturing.

o Data recording and traceability: The system automatically records smelting curves and process parameters, supports data export, facilitating experimental analysis and process optimization.

multiple security protection system

o Comprehensive protection: Equipped with multiple safety mechanisms including hydraulic pressure protection, overheat protection, overcurrent protection, vacuum interlock protection, and emergency stop button.

o Worry-Free Operation: When the system detects abnormal cooling water, temperature exceedance, or vacuum leakage, it automatically cuts off the power and triggers an alarm, ensuring equipment and operator safety for worry-free operation.

3. Technical Parameters and Specifications

4. Detailed Explanation of Typical Application Scenarios

High-end jewelry manufacturing:

o K Gold Homogenization Smelting: The mechanical stirring function effectively resolves density segregation in multi-component alloys (gold, silver, copper, zinc), ensuring consistent coloration (18K/24K) and uniform hue across all batches of K Gold jewelry, with zero color variation.

o Precious metal recovery and purification: Melting and recycling old jewelry under vacuum conditions, combined with secondary feeding to remove impurities, yields high-density, high-purity gold or silver ingots, thereby reducing oxidation loss of precious metals.

New Material Development and University Experiments:

o Special alloy preparation: When developing new aluminum or magnesium alloys containing easily oxidizable elements such as rare earth and magnesium, the vacuum secondary feeding function was utilized to precisely control the addition timing, thereby avoiding element burn-off and successfully preparing experimental samples with precise composition.

o High-purity metal research: Melting high-purity copper or iron in a vacuum environment to remove gaseous impurities, and investigating the effects of vacuum degree on the microstructure and mechanical properties of the metals.

New Energy and Aerospace:

o Hydrogen storage alloy melting: Preparation of lanthanum-nickel series and other hydrogen storage alloys, ensuring uniform distribution of elements through mechanical stirring to enhance the consistency of hydrogen absorption and desorption performance.

o High temperature alloy prototype manufacturing: to provide high density, no inclusion master alloy ingot for small batch trial production of aero-engine blade material, and to verify the feasibility of new material process.

Semiconductors and electronic materials:

o The preparation of the target alloy: high purity copper alloy or silver alloy is melted as the raw material of the sputtering target, ensuring the extremely low gas content and extremely high density, and guaranteeing the quality of the subsequent coating.

o Electronic packaging materials: Fabricate high thermal conductivity and low thermal expansion coefficient electronic packaging alloys. The stirring function ensures uniform distribution of all phases in the composite material, thereby enhancing thermal management performance.

5. Why choose the BZ4 vacuum induction melting furnace?

The BZ4 Vacuum Induction Smelting Furnace redefines alloy smelting standards in laboratory and small-scale production through its two core technologies: mechanical stirring and vacuum secondary feeding. It not only resolves the persistent challenges of component segregation and oxidation loss in traditional smelting processes, but also achieves superior density and purity in finished products through its high-vacuum environment. The PLC intelligent control system simplifies complex smelting operations, while its 24/7 continuous operation significantly enhances equipment efficiency and output ratio. Whether for jewelers pursuing exquisite finishes or researchers pushing material performance limits, the BZ4 stands as a reliable partner. Its multi-layered safety design provides robust protection for laboratory environments. Choosing the BZ4 means selecting a high-quality, efficient, and safe smelting solution that drives continuous breakthroughs in metal material research and application, enabling the creation of alloy products with superior performance and greater value.