High-temperature frit furnace with stirring system: programmable curves, integrated control, shell temperature close to room temperature, and safe operation.

GWDL-R series high-temperature furnaces integrate the control system and the furnace chamber into one unit. The furnace lining is made of vacuum-formed high-purity alumina lightweight aggregate materials.

These furnaces use high-temperature electric heating elements for heating. They are specialized equipment developed for laboratories in institutions of higher learning, scientific research institutes, as well as industrial and mining enterprises. They are used for sintering, melting, analyzing, and producing materials such as ceramics, metallurgy, electronics, glass, chemical engineering, machinery, refractory materials, new material development, special materials, building materials, metals, non-metals, and other compounds.
The control panel is equipped with an intelligent temperature controller, a control power switch, a main heating start/stop button, voltage and amperage meters, a computer interface, and an observation/air intake port. This allows for real-time monitoring of the working status of the system. The product adopts reliable integrated circuits, has a good working environment, and is resistant to interference. When at the maximum temperature, the temperature of the furnace body shell is ≤45°C, which greatly improves the working environment. It is controlled by a microcomputer program, with programmable curves, and can automatically heat up and cool down. The temperature control parameters and program can be modified during operation, making it flexible, convenient, and easy to operate.

Technical Parameters	1200℃	1400℃	1600℃	1700℃	1800℃	Remarks
Maximum Operating Temperature	1200℃	1400℃	1600℃	1700℃	1800℃
Long-term Operating Temperature	1150℃	1350℃	1550℃	1680℃	1780℃
Temperature Control Range	100-1200℃	100-1400℃	100-1600℃	100-1700℃	100-1800℃
Temperature Control Precision	±1℃	±1℃	±1℃	±1℃	±1℃
Temperature Measuring Element	K	S	B	B	B
Heating Element Material	Silicon carbide rods	Silicon carbide rods	Molybdenum disilicide rods	Type 1800 molybdenum disilicide rods	Type 1850 molybdenum disilicide rods
Crucible Material	99% quartz ceramic, mullite, or 99% alumina (3 options available)
Installation Position of Heating Elements	Around the crucible	Around the crucible	Around the crucible	Around the crucible	Around the crucible	10-17L models adopt two sets of heating systems (around and at the bottom)
Heating Rate	Maximum 40℃/min (non-linear)
Furnace Body Structure and Material	Electric furnace body adopts air-cooled double-layer carbon steel structure; effective air-cooled guide partitions enable overall cold air circulation in the furnace shell, which cools the conductive sheets of heating elements before being discharged, avoiding high-temperature oxidation of conductive sheets and ensuring a good working environment.
Crucible Installation Method	1-5L crucibles: inserted from the furnace top; 10-17L crucibles: equipped with a lifting mechanism for lifting into the high-temperature chamber from the bottom
Refractory Insulation Material	The furnace lining is made of high-purity alumina lightweight materials resistant to glass liquid corrosion, with high operating temperature, low heat storage, resistance to rapid heating and cooling, no cracks, no slag dropping, and good insulation performance
Furnace Shell Temperature	≤45℃
Safety Protection	Adopts integrated module control unit with accurate control precision, designed with dual-loop control and protection, featuring overshoot, undershoot, thermocouple break, phase loss, overvoltage, overcurrent, overtemperature, current feedback, and soft start protection.
Safety Temperature Control	Uses closed-loop thyristor module trigger control, phase-shift trigger control or zero-crossing trigger mode; output voltage, current, or power is continuously adjustable, with constant voltage, constant current, or constant power characteristics; the current loop is the inner loop, and the voltage loop is the outer loop. When the load is suddenly applied or the load current exceeds the current limit, the output current of the regulator is limited within the rated current to ensure the normal operation of the output and regulator; at the same time, the voltage loop also participates in regulation, so that the output current of the regulator is limited within the rated current, and the output current and voltage are maintained constant under the premise of sufficient regulation margin; thus, the heating elements are protected from excessive current and voltage impact, achieving safe and reliable control effect and precision.
Temperature Curve Setting	Adopts intelligent temperature controller with multiple regulation modes such as standard PID, artificial intelligence adjustment APID or MPT, featuring self-tuning and self-learning functions, excellent control characteristics without overshoot or undershoot, with 30-segment program control function, enabling arbitrary slope heating and cooling control, with programmable/operable commands such as jump (cycle), run, pause, and stop, and allowing program modification during operation; uses artificial intelligence adjustment algorithm with curve fitting function to achieve smooth curve control effect.
Number of Heating Curve Segments	50-segment program control function: 50 segments for one curve, 28 segments each for two curves, 15 segments each for three curves, 9 segments each for five curves; multiple curves can be input simultaneously and called arbitrarily during use.
Panel Buttons	Two buttons/knobs: main power button/knob, heating chamber switch button/knob
Random Accessories	One pair of crucible tongs, one pair of high-temperature gloves

Model and Specification Parameters of the Frit Furnace

Name	Specification Model	Standard Crucible Material	Overall Dimensions (mm)	Crucible Volume (L)	Power (kw)	Weight (kg)
1600℃ Box-type Electric Furnace	GWDL-1600R-A-1.6L	High-purity fused silica ceramic	L=1120, W=800, H=1370	1.6L	8	200
	GWDL-1600R-A-3L	High-purity fused silica ceramic	L=1120, W=800, H=1370	3L	10	240
	GWDL-1600R-A-5L	High-purity fused silica ceramic	L=1120, W=800, H=1370	5L	12	260
	GWDL-1600R2-A-10L	High-purity fused silica ceramic	L=1825, W=1825, H=2100	10L	18	330
	GWDL-1600R2-A-17L	High-purity fused silica ceramic	L=1825, W=1825, H=2100	17L	24	470
	GWDL-1600R2-A-50L	High-purity fused silica ceramic	Customized	50L	55	750
	GWDL-1600R2-A-70L	High-purity fused silica ceramic	Customized	70L	75	950

List of Optional Additional Functions

Name	Function Introduction	Options	Function Code
Temperature Controller	Standard 50-segment heating curve; imported instruments can be selected alternatively (B)	Two choices	AB
Touchscreen	Chinese menu, storage of multiple heating process curves, storage of historical curves and data reports (7-inch)	Four choices	C
IoT Interface	The RS485 communication interface of the electric furnace reads and writes real-time data such as furnace start, pause, stop, heating curve, allowable time, etc.		D
Computer Control Software and Hardware	The furnace can be controlled via computer for starting, pausing, stopping, setting heating curves, reading heating curves, and parameter adjustment with high reliability and easy operation. It displays measured value, set value, output value, segment time, segment number, heating curve, and power percentage curve. Heating curves can be stored, set values and common parameters modified via computer. Historical curves and reports can be saved for a long time with selectable time intervals (1s-1h).		E
PLC	Adopts Siemens PLC control (capable of reading and writing furnace start, pause, stop, heating curve, time, temperature curve, atmosphere, flow, switch quantity, power supply, power); opens ports for serial and parallel data with upstream and downstream equipment		F
Air Inlet	Float flowmeter + manual valve; the number of flowmeters, maximum output, and gas medium can be selected	Two choices	K
Air Inlet	Digital display mass flowmeter; the number of flowmeters, maximum output, and gas medium can be selected	Two choices	M
Air Outlet	Exhaust port, manually opened; DN30	Two choices	T
Air Outlet	Electrically opened, automatically opened or closed at segment N according to the heating curve	Two choices	P
Fully Automatic Air Inlet and Outlet	Electric exhaust port and electric air inlet can be associated with heating curve segments to be automatically opened and closed at any temperature segment; PLC is used to realize automatic opening and closing during heating (on the premise of selecting the touchscreen function)		Y
Vacuum Atmosphere	The feeding chamber, high-temperature furnace chamber as a whole, and discharging chamber adopt vacuum-sealed shells to prevent oxidation, and can be used with atmosphere		R
High-Temperature Stirrer	Uses frequency converter and reducer for speed regulation; the stirrer rod is made of high-temperature ceramic		Z
Independent Control Cabinet	Control system is separated from the furnace body; an independent control cabinet (1600x600x400) is added, and the length of the control cable is extended (within 5 meters)		Q

High-Temperature Glass Melting Furnace with Agitation System

High-Temperature Glass Melting Furnace with Agitation System

Product Video

GWDL-R series high-temperature furnaces integrate the control system and the furnace chamber into one unit. The furnace lining is made of vacuum-formed high-purity alumina lightweight aggregate materials.

Model and Specification Parameters of the Frit Furnace

List of Optional Additional Functions

Recommend Products