Directional solidification and regional melting induction zone melting furnace

1. Equipment Introduction

Directional solidification and regional melting induction zone melting furnaceIt mainly includes two functions, one for melting and purifying materials, and the other for directional solidification of materials.

2. Structure Introduction

Directional solidification and regional melting induction zone melting furnaceIt mainly consists of induction heating device, crucible and insulation device, sealed quartz tube device, zone melting device, directional solidification device, vacuum device, protective atmosphere device, temperature measurement device, bracket and operation platform device, and visual control system.

1. Induction heating device: Induction heating is provided by a high-frequency power supply with an oscillation power of 15kW and an oscillation frequency of 30-80kHz

2. Crucible and insulation device: consisting of a graphite crucible, a quartz ceramic insulation sleeve, a boron nitride insulation base, and an insulation cover, ensuring that the temperature transmitted to the quartz tube is below 800 ℃; The insulation cover has an observation hole that allows for the observation of the molten state.

3. Sealed quartz tube device: It consists of one quartz tube and two sets of sealing flanges, sealed with silicone sealing rings, locally water-cooled, and equipped with various interfaces on the sealing flange for easy access by other devices.

4. Zone melting device: composed of servo motor, reducer, linear module, and connecting block, it drives the coil to move up and down along the quartz tube with adjustable speed to achieve zone melting.

5. Directional solidification device: It is introduced from the sealing flange at the bottom of the quartz tube to drive the sealing structure, leaving a thermocouple interface. The crucible is driven up and down by a stepper motor, reducer, linear module, and connecting block to achieve the purpose of directional solidification.

6. Atmosphere protection device: The bottom sealing flange of the quartz tube has an inflation interface with a valve and an intake interface. The top sealing flange of the quartz tube has an exhaust interface and a valve, and is equipped with a safety valve to prevent damage to components caused by high air pressure

7. Temperature measuring device: Connected from the directional solidification moving tube, it can directly contact the graphite crucible, measure the temperature of the graphite crucible, and manually adjust the output power of the high-frequency power supply according to the temperature.

8. Bracket and operation platform device: It is made of profiles and plates spliced together, with humanized design, easy operation, and small footprint.

9. Visual control system: The entire system is controlled by PLC+touch screen to achieve visual operation, which is intuitive and convenient. It can also record various experimental data in real-time and download it to the PC, making it convenient for users to adjust process data.