1700°C 10L High-Temperature Melting Furnace

Product Description

1700°C 10L lifting melting furnace with precise temperature control, designed for high-temperature material melting and research.

Product Features

Furnace body structure and materials

The furnace features a double-layer carbon steel shell with air-cooling baffles, improving heat dissipation, protecting conductive components, and ensuring stable operation.

Optional crucible materials

A variety of optional crucible materials are available to meet different high-temperature processing requirements. The available options include high-purity quartz, fused silica, mullite, 99% alumina (corundum), cordierite, zirconia, corundum mullite, zirconium mullite, magnesium corundum, and zirconium corundum.
High-purity quartz crucibles provide excellent chemical purity and thermal stability, with SiO₂ content of up to 99% and a maximum operating temperature of approximately 1680°C. Fused silica crucibles feature low density and excellent thermal shock resistance, making them suitable for processes involving rapid heating and cooling.
Mullite crucibles typically contain 60–70% Al₂O₃ and offer a good balance of thermal stability, mechanical strength, and thermal shock resistance. For higher-temperature applications, 99% alumina crucibles can withstand temperatures up to approximately 1750°C while providing excellent resistance to corrosion and thermal degradation.
Cordierite crucibles contain approximately 52% Al₂O₃, 40% SiO₂, and 8% MgO. They provide excellent thermal shock resistance and are suitable for applications involving repeated heating and cooling cycles. Zirconia crucibles offer outstanding high-temperature stability and chemical resistance, with ZrO₂ + HfO₂ content above 95% and maximum operating temperatures up to approximately 2200°C.
Composite ceramic materials such as corundum mullite, zirconium mullite, magnesium corundum, and zirconium corundum provide different combinations of mechanical strength, thermal stability, and chemical resistance. Depending on the material composition, these crucibles can generally support operating temperatures from approximately 1600°C to 1800°C.
The appropriate crucible material can be selected according to the processing temperature, material characteristics, furnace atmosphere, chemical environment, heating rate, and thermal cycling requirements. Different crucible sizes, shapes, capacities, and materials can also be configured according to the furnace model and specific application, supporting laboratory research, ceramics, metallurgy, glass, chemicals, electronics, refractory materials, powder processing, and advanced material development.

Safe temperature control

The furnace adopts closed-loop thyristor control technology to provide precise and stable regulation of the heating power. Depending on the process requirements, phase-shift or zero-crossing triggering can be selected to continuously adjust the output voltage, current, or power.
The control system uses a dual-loop architecture consisting of an inner current loop and an outer voltage loop. This configuration enables coordinated regulation of current and voltage, providing constant-current, constant-voltage, or constant-power operation with sufficient control margin.
When the furnace experiences a sudden load increase or the load current exceeds the preset limit, the system automatically restricts the regulator output current to within the rated range. The voltage loop simultaneously participates in the regulation process to maintain stable output conditions.
This closed-loop protection mechanism helps prevent excessive current and voltage surges from reaching the heating elements. By improving power stability and response performance, the system reduces the risk of heating element damage and supports safe, reliable, and precise high-temperature furnace operation.

Technical Specifications

Item	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 accuracy	±1℃	±1℃	±1℃	±1℃	±1℃
Temperature sensor (thermocouple type)	K	S	B	B	B
Heating element material	Silicon carbon rod	Silicon carbon rod	Silicon molybdenum rod	1800-type silicon molybdenum rod	1850-type silicon molybdenum rod
Crucible material	99% quartz ceramic or mullite or 99% alumina					3 optional materials
Heating element installation position	Around crucible	Around crucible	Around crucible	Around crucible	Around crucible	For 10–17L models: dual heating system (side + bottom)
Heating rate	Max heating rate 40℃/min (non-linear)
Furnace structure & body material	The furnace body adopts an advanced air-cooled double-layer carbon steel structure. A guided cooling air duct system ensures internal air circulation, effectively cooling the power connection terminals of heating elements before exhausting air from the furnace, preventing high-temperature oxidation of terminals and ensuring a safe working environment.
Crucible loading method	1–5L crucibles are inserted from the top; 10–17L models are equipped with a lifting mechanism for bottom loading into the hot zone.
Thermal insulation material	High-purity alumina lightweight material resistant to glass melt corrosion, suitable for high temperature use, low heat storage, resistant to thermal shock, no cracking, no slagging, excellent insulation performance.
Furnace shell temperature	Outer shell temperature < 45℃
Safety protection	Integrated modular control unit with high precision control. Dual-loop control and dual-loop protection system, including over-shoot, over-regulation, under-regulation, thermocouple break, phase loss, over-voltage, over-current, over-temperature, current feedback, soft start and other protection functions.
Temperature safety control	Closed-loop thyristor module triggering control with phase-angle or zero-cross triggering. Output voltage, current, and power are continuously adjustable. Features constant voltage, constant current, or constant power operation. Inner current loop and outer voltage loop ensure current limitation during overload conditions, protecting heating elements from excessive current or voltage impact and ensuring stable and reliable control performance.
Temperature program control	Intelligent temperature controller with PID, APID (artificial intelligence PID), or MPT control modes. Features self-tuning and self-learning functions, no overshoot or undershoot. Supports 30-segment programmable control, enabling arbitrary heating/cooling slopes. Includes jump (cycle), run, pause, and stop functions, and allows real-time program modification. Uses intelligent curve fitting algorithm for smooth temperature curves.
Program segment capacity	50-segment program control function. Can be configured as: 1 curve = 50 segments; 2 curves = 28 segments/curve; 3 curves = 15 segments/curve; 5 curves = 9 segments/curve. Multiple curves can be stored and freely selected during operation.
Panel buttons	Two controls: main power switch/knob and heating chamber enable switch/knob.
Accessories	One crucible tongs, one pair of high-temperature gloves.

Melting furnace model and specifications

name	Specifications and Models	Crucible material (standard configuration)	External dimensions (mm)	Crucible volume (L)	power kW	weight (kg)
1200°C box-type electric furnace	GWDL-1200R-A-1.6L	High-purity fused silica ceramics	L=1120, W=800, H=1370	1.6L	6	180
	GWDL-1200R-A-3L	High-purity fused silica ceramics	L=1120, W=800, H=1370	3L	10	220
	GWDL-1200R-A-5L	High-purity fused silica ceramics	L=1120, W=800, H=1370	5L	12	240
	GWDL-1200R2-A-10L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	10L	15	300
	GWDL-1200R2-A-17L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	17L	18	450
	GWDL-1200R2-A-50L	High-purity fused silica ceramics	custom made	50L	45	700
	GWDL-1200R2-A-70L	High-purity fused silica ceramics	custom made	70L	60	900
1400°C box-type electric furnace	GWDL-1400R-A-1.6L	High-purity fused silica ceramics	L=1120, W=800, H=1370	1.6L	8	200
	GWDL-1400R-A-3L	High-purity fused silica ceramics	L=1120, W=800, H=1370	3L	10	240
	GWDL-1400R-A-5L	High-purity fused silica ceramics	L=1120, W=800, H=1370	5L	12	260
	GWDL-1400R2-A-10L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	10L	18	330
	GWDL-1400R2-A-17L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	17L	twenty four	470
	GWDL-1400R2-A-50L	High-purity fused silica ceramics	custom made	50L	55	750
	GWDL-1400R2-A-70L	High-purity fused silica ceramics	custom made	70L	75	950
1600°C box-type electric furnace	GWDL-1600R-A-1.6L	High-purity fused silica ceramics	L=1120, W=800, H=1370	1.6L	8	200
	GWDL-1600R-A-3L	High-purity fused silica ceramics	L=1120, W=800, H=1370	3L	10	240
	GWDL-1600R-A-5L	High-purity fused silica ceramics	L=1120, W=800, H=1370	5L	12	260
	GWDL-1600R2-A-10L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	10L	18	330
	GWDL-1600R2-A-17L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	17L	twenty four	470
	GWDL-1600R2-A-50L	High-purity fused silica ceramics	custom made	50L	55	750
	GWDL-1600R2-A-70L	High-purity fused silica ceramics	custom made	70L	75	950
1700°C box-type electric furnace	GWDL-1700R-A-1.6L	High-purity fused silica ceramics	L=1120, W=800, H=1370	1.6L	10	200
	GWDL-1700R-A-3L	High-purity fused silica ceramics	L=1120, W=800, H=1370	3L	12	240
	GWDL-1700R-A-5L	High-purity fused silica ceramics	L=1120, W=800, H=1370	5L	15	260
	GWDL-1700R2-A-10L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	10L	30	330
	GWDL-1700R2-A-17L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	17L	45	470
	GWDL-1700R2-A-50L	High-purity fused silica ceramics	custom made	50L	55	750
	GWDL-1700R2-A-70L	High-purity fused silica ceramics	custom made	70L	75	950
1800°C box-type electric furnace	GWDL-1800R-A-1.6L	High-purity fused silica ceramics	L=1120, W=800, H=1370	1.6L	12	300
	GWDL-1800R-A-3L	High-purity fused silica ceramics	L=1120, W=800, H=1370	3L	15	340
	GWDL-1800R-A-5L	High-purity fused silica ceramics	L=1120, W=800, H=1370	5L	18	360
	GWDL-1800R2-A-10L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	10L	36	430
	GWDL-1800R2-A-17L	High-purity fused silica ceramics	L=1825, W=1825, H=2100	17L	50	570
	GWDL-1800R2-A-50L	High-purity fused silica ceramics	custom made	50L	65	850
	GWDL-1800R2-A-70L	High-purity fused silica ceramics	custom made	70L	85	1150
Note:	1. All models listed above are in stock. Custom furnace dimensions for special models can be made to order (delivery time 7-10 days)! Custom sizes will incur a 20% surcharge for a single unit, a 10% surcharge for 3-5 units, and no surcharge for 6 units or more.
Note:	2. Dimensions are in millimeters (mm). The dimensions shown are for reference only; the actual dimensions shall prevail.

Application areas

Fuel Cell Materials: Used for controlled sintering of fuel cell components, supporting precise temperature profiles and repeatable thermal processing.
Ceramic & Refractory Materials: Suitable for ceramic firing and refractory material processing requiring stable high-temperature control and uniform heating.
Advanced Materials Research: Applied to laboratory-scale sintering and thermal processing of specialty materials, prototypes, and research samples.

Why Choose Us

CE-Certified Melting Furnaces: Reliable safety, quality control, and compliance for international high-temperature applications.
Precise Temperature Control: Advanced heating and control systems provide stable, accurate performance for demanding melting processes.
Flexible Furnace Solutions: Customizable capacities, crucible configurations, and lifting systems meet diverse material processing needs.

FAQ

Q1: How do I choose the right crucible material for my application?

A: Crucible selection depends on processing temperature, material chemistry, furnace atmosphere, heating rate, and thermal cycling. Options include quartz, fused silica, mullite, alumina, cordierite, zirconia, and composite ceramics.

Q2: Which crucible is suitable for high-temperature melting?

A: For higher-temperature applications, 99% alumina crucibles offer excellent corrosion resistance and can operate at approximately 1750°C. Zirconia crucibles provide higher temperature stability, with operating temperatures up to about 2200°C.

Q3: What crucible options are available for rapid heating and cooling?

A: Fused silica and cordierite crucibles provide excellent thermal shock resistance, making them suitable for processes involving repeated or rapid heating and cooling cycles.

Q4: How is the material removed after melting?

A: The unloading method depends on crucible capacity and furnace configuration. Larger 10–17L crucibles can use the bottom lifting mechanism to lower the crucible for convenient material removal.

Q5: Can the crucible be customized for different melting processes?

A: Yes. Crucible material, size, shape, and capacity can be configured according to the furnace model, processed material, temperature, and specific melting requirements.