Vacuum Induction Suspension FurnaceIt is a high-D material preparation equipment that integrates vacuum environment, high-frequency induction heating, and crucible free suspension melting technology. It is mainly used for the melting, purification, and solidification research of high-purity, high activity, or high melting point metals and alloys (such as titanium, zirconium, niobium, tantalum, rare earth alloys, high-temperature alloys, etc.). Its biggest feature is to use electromagnetic force to "suspend" the metal sample in a molten state at the center of the coil, avoiding contact with the container, thereby completely eliminating crucible contamination and obtaining high-purity materials.
The equipment mainly consists of a vacuum system (mechanical pump+diffusion pump or molecular pump, with a maximum vacuum of 10 ⁻³ -10 ⁻⁵ Pa), a high-frequency induction power supply (usually with a frequency of 10-500 kHz), a water-cooled copper coil, a suspension control system, a cooling solidification device, and an intelligent operation platform. During operation, the metal sample is placed inside an induction coil and generates eddy currents under the action of an alternating magnetic field, causing self heating and melting; At the same time, the Lorentz force generated by the magnetic field gradient balances with gravity, stabilizing the suspension of the melt. By precisely regulating power, vacuum degree, and cooling rate, special processes such as directional solidification, rapid cooling forming, or single crystal growth can be achieved.
Vacuum Induction Suspension FurnaceThe main characteristics are:
1. Pollution free melting: Using water-cooled copper crucibles instead of traditional refractory material crucibles, the metal melt is suspended by electromagnetic force to avoid contamination of the melt pool by crucible materials and ensure high purity of the prepared metal or alloy. For example, in titanium alloy melting, the oxygen content can be significantly reduced, improving material properties.
2. High temperature melting capability: Breaking through the temperature limitation of crucible materials, the melting temperature can reach 2500 ℃ or even higher (some equipment can reach over 3000 ℃), suitable for melting and purifying high melting point metals (such as molybdenum and zirconium) and active metals (such as titanium and rare earths).
3. Composition uniformity: The melt flows rapidly under electromagnetic stirring, combined with thermal stirring effect, to achieve uniform distribution of alloy composition, reduce segregation phenomenon, and meet the requirements of precision alloy preparation.
4. Preparation of high-purity materials: Melting under vacuum or argon protective atmosphere effectively prevents oxidation and volatilization, suitable for the preparation of high-purity materials such as ultra pure sputtering targets, solar grade polycrystalline silicon, and 4N grade ultra pure metals.
5. Wide applicability: It can handle a variety of metal materials, including rare earth metals, high-temperature alloys, amorphous metals, refractory metals (such as zirconium, hafnium, vanadium), and precious metals (such as platinum, rhodium), covering production scales from laboratory to industrial levels.
6. Efficient and energy-saving design: adopting high-efficiency IGBT power supply and reasonable crucible and induction coil design to reduce energy consumption; The segmented water-cooled copper crucible structure extends the service life (some equipment can reach more than 10000 heats) and reduces maintenance costs.
7. Operational stability and automation: equipped with PLC programming automation control system and touch screen operation interface to achieve precise control and storage of process parameters; Integrate multiple signal sensors and monitoring instruments, combined with safety interlocks and limit devices, to ensure reliable and stable operation.
8. Safety protection design: double-layer observation window, professional goggles, and camera system ensure visibility during high-temperature operations; The sound and light alarm device provides real-time alerts for abnormal conditions, ensuring the safety of personnel and equipment.