Product Description:
Sapphire annealing furnace uses high-quality silicon-molybdenum rod as heating element, double shell structure and intelligent temperature control system, thyristor control, phase-shifting trigger, 1800 alumina polycrystalline fiber material as furnace chamber, air-cooling system between double shell, which can quickly raise and lower temperature, save energy, protect environment, and be safe and reliable.
Main uses and scope of application:
It is suitable for the annealing process of sapphire wafer and sapphire crystal rod. It is also suitable for high temperature sintering, metal annealing, new material development, organic matter ashing and quality testing in universities, scientific research institutes and industrial and mining enterprises. It is also suitable for the production and experiment of military industry, electronics, medicine and special materials.
Main functions and characteristics:
1. High-quality silicon-molybdenum bars are used as heating elements and alumina polycrystalline fibers are used as furnace materials, which have good thermal insulation, durability, high tensile strength and greatly prolonged service life.
2. Unique furnace design, durable, non-collapse;
3. Our software equipment is connected with computer through 485 or USB interface, which can realize remote control, real-time tracking, history recording and report output of single or multiple electric furnaces, and can install paperless recording device to realize data storage and output.
4. Overtemperature alarm and power failure, leakage protection, safe and reliable operation;
5. The temperature control system can be programmed by touch screen operation, which is simple, convenient and accurate.
6. Wide range of temperature control, intelligent PID regulation, micro-computer control, 30-section programmable temperature control curve, without duty (automatic rise, fall, heat preservation).

Technical parameters:

Product Model
Sapphire annealing furnace
Furnace size (mm)
(customizable)
100*100*100
150*150*150
300*200*120
300*200*200
Furnace size (mm)
(customizable)
300*250*250
350*250*200
400*300*300
500*400*400
Working power supply
(According to customer requirements)
AC 380V 50/60Hz or AC 220V 50/60Hz
Furnace door structure
Side-open type
Heating element
Silicon-Molybdenum Bar
working temperature
1650 C
Maximum temperature
1700 C
temperature control
Intelligent PID control, micro-computer control, 30-section programmable temperature control curve, without duty (automatic heating, constant temperature, cooling)
heating rate
1-15 C/min
control accuracy
+1 CENTRAL TECHNOLOGY _________
Temperature measuring element
(Customer Selection)
S-type thermocouple
Standard accessories
One pair of high temperature gloves, one crucible pliers, one set of maintenance tools, packing list, delivery receipt, operation and maintenance instructions, and after-sales service commitment.
Optional Accessories
High, medium and low vacuum systems, paperless recorders, corundum crucibles, quartz crucibles, etc.
Note: Furnace size can be customized according to requirements. Please specify when ordering other special requirements.
Quality Advantages of Experimental Furnace of Shanghai Institute of Optical Precision Machinery, Chinese Academy of Sciences:
I. Furnace Shell and Furnace
1. Double-layer high-quality carbon steel plate, surface rust-proof and high-temperature paint treatment;
2. High temperature furnace with alumina polycrystalline fibers is beautiful and energy-saving.
II. Electrical appliances and temperature control
1. All the electronic components of Delicious brand and SCR are originally made in Japan or Germany.
2. To ensure safe and efficient use, imported copper isolation transformer is adopted.
3. Temperature Control and Detection
Rhodium monoplatinum (S type) is less than 1500 C.
Bi-platinum rhodium (B type) is less than 1800 C.
Senior engineer, master of engineering and doctor of Shanghai Institute of Optics and Precision Machinery, Chinese Academy of Sciences can select the experimental furnace for your company and research institute, and senior designers can work together to design the high temperature furnace.