AJ ZQLB Series 1700°C Vacuum Atmosphere Box Furnace - Luoyang Anjing Intelligent Equipment Co.

Technical parameters:

The AJ-ZQLB series 1700°C vacuum atmosphere box-type electric furnace, as shown in the figure, integrates a temperature control system, vacuum furnace chamber, vacuum pump, gas circuit, pressure protection, gas flow control, positive and negative pressure display, and water circulation pump. The water circulation tank and the furnace body are powder bodies. The furnace lining is made of imported vacuum-formed high-purity alumina lightweight material.
It uses imported 1800-type molybdenum disilicide heating elements as heating elements; it is a specialized device developed for laboratories in institutions of higher education and scientific research institutes, as well as industrial and mining enterprises, for sintering, melting, analyzing, and producing ceramics, metallurgy, electronics, glass, chemicals, machinery, refractory materials, new material development, special materials, building materials, metals, non-metals, and other chemical compounds.
The control panel is equipped with an intelligent temperature regulator, control power switch, main heating work/stop buttons, voltage and current meters, computer interface, water pump switch, vacuum pump switch, gas flow meter, positive and negative pressure gauge, electric contact pressure gauge, and valves, so that the working status of the system can be observed at any time. This product adopts a reliable integrated circuit, provides a good working environment, and is resistant to interference. At the highest temperature, the outer shell temperature of the furnace body is <=40°C, which greatly improves the working environment. It uses microcomputer program control, can program curves, and fully automatically heats up/cools down. Temperature control parameters and programs can be modified during operation, making it flexible and convenient, and simple to operate.
Temperature control accuracy: +/-1°C without overshoot. Constant temperature accuracy: +/-1°C. The heating speed is fast, with a maximum heating rate of <=45/min.
The furnace chamber material is entirely made of imported vacuum-formed high-purity alumina lightweight material. It has a high service temperature, small heat storage, resistance to rapid heating and cooling, does not crack, does not shed slag, and has good insulation performance (energy-saving effect is more than 60% that of old-style electric furnaces). The structure is reasonable, with inner and outer double-layer furnace sleeves and air-cooled heat dissipation, which can greatly shorten the test cycle.

Category	Parameter
Rated Temperature	1700℃
AC Power Supply	380V
Maximum Working Temperature	1750℃
Long-term Continuous Working Temperature	1700℃
Temperature Control Range	50～1700℃
Temperature Measuring Element	Type B Thermocouple, measuring range: 0–1820℃
Heating Element Installation Position	Both sides of furnace chamber (Imported 1800-type Si-Mo heating rods)
Temperature Control Accuracy	±1℃ (Integrated circuit control, no overshoot)
Furnace Temperature Uniformity	±1℃ (Depends on furnace chamber size; multi-point control is available for large chambers for better temperature uniformity)
Heating Rate	Freely adjustable. Max: 40℃/min, Min: 1℃/h
Heating Element	Imported high-temperature 1800 U-type silicon-molybdenum rods
Heating Element Installation & Replacement	The sealed top cover of the vacuum atmosphere furnace is fitted with a mechanical lifting mechanism. The cover can be lifted easily and rotated after lifting to save labor and time.
Furnace Body	CNC machined, polished, ground, pickled, phosphated, powder-coated and high-temperature baked. Two-tone design with attractive appearance, oxidation resistance, acid & alkali resistance, high temperature resistance and easy cleaning.
Furnace Body Structure	Air-cooled double-layer furnace body for comfortable working environment
Furnace Door Opening Mode	Axial 180° side opening. The door can rotate 360° to prevent burns from the hot inner surface during material unloading.
Water Cooling Configuration	Equipped with one 2P chiller
Water Cooling Zones	Furnace mouth, furnace door and furnace top of the inner shell
Circulating Water Radiator	Multi-channel pure aluminum water cooling fins to effectively prevent overheating of circulating water
Vacuum Pump	Two-stage direct rotary vane vacuum pump
Vacuum Degree	-0.1MPa (indicated by pointer gauge)
Pressure Resistance	Furnace chamber plate thickness: 6–20 mm, double-sided welding, withstand positive pressure up to 0.1 MPa
Gas Circuit Valves	Imported stainless steel valves
Pressure Detection	One pointer gauge for positive and negative pressure (digital vacuum gauge optional)
Gas Flow Meter	2 pcs float flowmeters (digital mass flowmeter optional for higher precision)
Pressure Protection System	Prevents risks caused by closed or blocked exhaust port and overpressure inside the chamber. It receives signals from electric contact pressure gauge or pressure sensor, triggers the control module to close the electromagnetic inlet valve, open the electromagnetic exhaust valve and activate the audible & visual alarm buzzer to release pressure and protect the furnace.
Gas Leakage Alarm	Optional. It detects excessive concentration of toxic and hazardous gases in the working area. Once triggered, the system shuts down the furnace, cuts off gas supply, opens exhaust port and ventilation system to ensure a safer working environment.
Applicable Atmospheres	Hydrogen, Nitrogen, Argon, Carbon Monoxide, Oxygen, etc.
Refractory Material	Furnace liner: imported German MESCHUPP vacuum-formed high-purity alumina fiber lightweight board. Furnace bottom (easy-to-collision area for loading/unloading): high-purity lightweight hollow sphere alumina board. Features: high service temperature, low heat storage, excellent thermal shock resistance, no cracking or slag dropping, good thermal insulation (energy saving over 80% compared with old-style furnaces).
Thermal Insulation Material	4-layer imported insulation: alumina fiber cotton, alumina fiber board, alumina polycrystalline fiber board. Energy saving over 80% compared with old-style furnaces.
Outer Shell Temperature	Less than 45℃ under continuous non-stop operation
Protection Functions	Integrated modular control unit for precise control. Dual-loop control and dual-loop protection. Protection items: overshoot, over-adjustment, under-adjustment, thermocouple break, phase loss, overvoltage, overcurrent, overtemperature, current feedback, soft start, etc.
Control System	Closed-loop SCR module trigger control, phase-shift trigger or zero-cross trigger. Output voltage, current and power are continuously adjustable with constant voltage / constant current / constant power modes. Current loop as inner loop and voltage loop as outer loop. When sudden load is applied or load current exceeds limit value, the output current of regulator is limited within rated range to protect normal operation. The voltage loop works simultaneously to stabilize output current and voltage within sufficient adjustment margin, protecting heating elements from current & voltage surge and ensuring reliable control and accuracy. See furnace video for reference.
Display Contents	Temperature, segment number, segment time, remaining time, output power percentage, voltage, current, etc.
Buttons	High-quality buttons with service life over 100,000 operations, with LED indicators
Temperature Curve Setting	Intelligent temperature controller supporting standard PID, APID, MPT and other regulation modes, with auto-tuning and self-learning functions, no overshoot or undershoot. 30-segment programmable control for heating & cooling at arbitrary slopes. Supports jump (cycle), run, pause, stop and online program modification. AI regulation algorithm with curve fitting delivers smooth temperature curves. See furnace video for reference.
Multi-curve Storage	30 segments (50 segments customizable). Curve allocation: 1 curve ×30(50) segments; 2 curves ×14(28) segments each; 3 curves ×9(15) segments each; 5 curves ×5(9) segments each. Multiple curves can be stored and called arbitrarily.
Communication Interface	RS485 interface, max communication distance 1700 m. PC control available for furnace start, pause, stop, curve setting & reading and parameter setting. Rich display on PC screen: measured value, set value, output value, segment time, segment number, temperature curve, power percentage curve. Curves can be saved, recalled and modified. Recording interval of historical curves & reports: 1s–1h adjustable, data can be stored long-term. See PC control software introduction.
Standard Accessories	2 heating elements, 2 sets of rod fixtures, 1 furnace door heat plug (supplied for furnaces ≥1700℃), 1 crucible tongs, 1 pair of high-temperature gloves
Warranty Scope & Period	One-year free warranty for the furnace. Heating elements are not covered by the general warranty; free replacement is available for natural failure within 3 months.

1700°C Vacuum Atmosphere Chamber Furnace

1700°C Vacuum Atmosphere Chamber Furnace

Product Video

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