High temperature sintering experimental furnace has many characteristics, such as good consistency of processed materials, high efficiency, energy saving, safety and cleanness. The intelligent high temperature sintering experimental furnace and its excellent performance and appearance can improve the laboratory environment and enhance the laboratory image Microwave high temperature sintering furnace It can be used for material synthesis and sintering under various atmosphere conditions in laboratories of scientific research institutions such as schools and enterprises.
1. Overview
Microwave high temperature bell jar kiln The experimental equipment is mainly used for firing in large quantities under protective atmosphere or weak reducing atmosphere. The equipment can be vacuumed and can be fed into protective atmosphere or weak reducing atmosphere. Due to the catalytic and non thermal effects of microwave, it is conducive to the solid phase diffusion of the product. The density and mechanical properties of the final product are significantly higher than those of conventional sintered products. Compared with traditional heating equipment, this equipment has simple structure, large daily processing capacity, small equipment area, high production efficiency, good product quality, and energy saving of more than 40%.
2. Structure composition
Microwave high temperature The experimental equipment of bell jar kiln mainly consists of Microwave Oven Chamber, thermal insulation system, microwave energy feeding system, elevator mechanism, water cooling system, vacuum system, atmosphere control system, temperature control system, electric control system, etc.
3. Main technical parameters
1. Power supply: 380 ± 10V/50Hz;
2. Technical parameters of microwave generator: 12Kw continuously adjustable; Meet the requirement that 8KG materials reach 15 ℃/min;
3. Microwave frequency: 2.45GHz ± 25MHz;
4. Single set Magnetron Output power: 1.5Kw;
5. Magnetron: normal service life is more than 5000 hours; Real time display of magnetron operation status; Microwave source matching circulator and Water load ；
6. The working temperature shall not be higher than 1700 ℃;
7. Working temperature: 1600 ℃
8. Heating mode: microwave heating ；
9. Temperature measurement method: Leitai infrared temperature measurement, auxiliary thermocouple calibration; The whole temperature display is controllable;
10. Temperature control mode: touch screen and temperature controller, which can set the temperature curve; With manual and automatic dual operation; With USB interface; Multiple temperature control curves can be set; It has the function of power-off and heat renewal.
11. Furnace temperature uniformity: ± 5 ℃ (1300 ℃);
12. Temperature control mode: ± 2 ℃;
13. Static vacuum degree: 100pa;
14. Accessible atmosphere: vacuum, inert gas, weak oxidizing gas;
15. Inflation flow adjustment range: 0.5~10L/min (requiring mass flowmeter control);
16. Effective loading space: Φ 250*300mm；
17. Furnace load:>50kg;
18. Microwave leakage intensity:<5mW/cm2
19. Cooling circulating water: flow ≥ 3m3/h; Pressure ≥ 0.1MPa Inlet temperature of circulating cooling water: 5~30 ℃; Total hardness of circulating cooling water:<60mg/L (tap water can be used instead); Cooling circulating water machine provided by the manufacturer;
20. Thermal insulation system: long-term use temperature of saggar material>1650 ℃; The thermal insulation material is special for microwave; Long term use temperature ＞ 1600 ℃.
21. Furnace structure: automatic lifting mechanism is adopted;
4. Performance characteristics:
1. Intermittent rapid firing can meet the production requirements of flexible or multi batch and small batch high added value materials, and realize sintering under high vacuum or more refined atmosphere conditions (air, oxygen, nitrogen, inert gas, weak reducing gas, etc.);
2. High efficiency microwave transmission system can feed energy evenly to materials; At the same time, the original mathematical and physical model is adopted, and scientific cavity design is carried out in combination with the heating process requirements, so that the microwave energy can be coupled with the material, to ensure that the material temperature field is uniform and stable, and the microwave utilization efficiency is high;
3. The microwave heating power is adjustable, the material temperature field is uniform and stable, and accurate temperature control curve is achieved;
4. The safe and reliable microwave shielding design ensures that the microwave leakage is less than 1mw/cm2, which is far superior to the national standard;
5. Compared with the conventional bell jar furnace, it has the characteristics of "high quality, high efficiency, energy saving and environmental protection":
① The sintered products have good consistency, no deformation and cracking, fine grains, high density, and significantly improved overall quality;
② The process cycle is greatly shortened, and the production efficiency is doubled, which is more suitable for production at night when the electricity price is low;
③ Energy saving is more than 40% compared with traditional kilns;
④ High degree of automation, safety, health, comfort, simple maintenance and repair, cost-effective.
6. Limit vacuum degree:<100pa;
7. The firing temperature of materials shall not be higher than 1650 ℃;
8. Touch screen display and control, with automatic and manual dual operation functions;
9. High precision infrared and thermocouple thermometers, oxygen partial pressure measuring instruments, micro manometers, etc. are used to measure the internal temperature, total pressure of oxygen partial pressure and other parameters of the kiln, and achieve full process accurate control;
5. Scope of application
1. High purity alumina
2. Sintering of microwave ferrite, high magnetic conductor, manganese zinc ferrite and alloy magnetic materials
3. Sintering of powder metallurgy and hard alloy products;
4. High temperature ceramic material sintering: Si3N4, reaction sintered SiC, zirconia, etc;
Can be customized according to customer requirements
