Laboratory Vacuum Furnace-Vacuum Heat Treatment Furnace-Vacuum Sintering Furnace

Brand: HLQ

Description

Description

In the demanding world of materials science, metallurgy, and high-tech manufacturing, the laboratory vacuum furnace has become an indispensable component for achieving high-purity, high-performance results. Also known as a vacuum heat treatment furnace, this specialized equipment creates a controlled, low-pressure environment for precise heat treatment, ensuring superior material properties and unmatched process reliability.

What is a Laboratory Vacuum Furnace?

A laboratory vacuum furnace is a high-temperature oven designed to perform heat treatment processes such as annealing, sintering, brazing, and degassing under vacuum or inert gas environments. By eliminating atmospheric gases like oxygen and moisture, vacuum furnaces prevent oxidation, contamination, and unwanted chemical reactions during thermal processing.

Key Features

Oxidation Prevention: The vacuum environment shields sensitive samples from air, ensuring pure, uncontaminated results.
Wide Temperature Range: Typical working temperatures span from 800°C up to 2000°C, with stable, programmable control.
Ultimate Vacuum Levels: State-of-the-art models reach vacuum as low as 7 × 10⁻³ Pa, suitable for even the most demanding processes.
Superior Temperature Uniformity: With uniformity as tight as ±5°C, these furnaces deliver consistent and reproducible results across the entire chamber.
User-Friendly Controls: Advanced PLC systems and touchscreen interfaces offer precision, automation, and data logging for process optimization.

Common Applications of Vacuum Heat Treatment Furnace

Laboratory vacuum furnaces are crucial across multiple industries and research sectors. Key applications include:

1. Heat Treatment of Alloys and Metals

Processes such as annealing, tempering, and stress relieving can be performed without the risk of oxide scale or internal contamination, especially important for aerospace components and specialty alloys.

2. Sintering of Advanced Materials

These furnaces are ideal for sintering magnetic materials, powder metallurgy products, ceramics, and composites. The vacuum or inert atmosphere ensures high density and superior purity, essential for cutting-edge electronics and magnetic applications.

3. Thermal Processing of Magnet Materials

Vacuum heat treatment is vital for materials like NdFeB and SmCo magnets, where the strict control of atmosphere and temperature dramatically affects magnetic properties and service life.

4. Brazing and Bonding

Joining complex and sensitive parts, such as those used in medical devices or high-vacuum systems, requires oxide-free, high-integrity bonding only achievable in a vacuum furnace.

5. Degassing & Purification

High vacuum and temperature combine to remove residual gases, moisture, and volatile contaminants from metals, ceramics, and functional materials — critical for semiconductor and high-purity applications.

High Temperature Lab Vacuum Furnace, 2200℃ Max. High Vacuum Heat Treatment Furnace.

This high temperature Vacuum Furnace is cost-effective. Max. vacuum 7×10-4Pa. Excellent uniformity, precise control for vacuum sintering, brazing, annealing, tempering and hardening, etc. It is used for ceramic materials, ceramic-metal composites, refractory metals, and alloy materials, as well as vacuum brazing of alloy tools and superhard materials.

High Temperature Vacuum Furnace Applications:

· Vacuum heat treatment – hardening, tempering, and annealing

· Vacuum brazing

· Sintering

· Degassing

Advantages of High Temperature Vacuum Furnace:

· No surface oxidation or discoloration

· Minimal distortion

· Flux free brazing

· Repeatable quality

· Clean, safe, quiet and efficient

All our vacuum furnaces can be used with either an inert gas or a reactive gas. The majority of products in our vacuum furnace range are available with either ceramic fiber, molybdenum, or graphite insulation. On request, a furnace with a graphite insulation chamber can be configured to safely operate at up to 2200°C.

3 types of Furnace Chamber for optional

Vacuum System:

Ⅰ. Technical Specifications
Max. temperature	1200℃ (Heating wires) 1350℃ (Molybdenum strap heaters ) 1400℃ (SiC heating elements) 1700℃ (MoSi heating elements) 2200℃ (Graphite heating element)
Furnace chamber insulation	1200℃ (Ceramic fiber board) 1350℃ (Molybdenum sheets and Stainless steel sheets ) 1400℃ (Ceramic fiber board) 1700℃ (Ceramic fiber board) 2200℃ (Carbon felt)
Furnace structure	●Double layers Carbon steel casing with water cooling system to ensure the surface below 30℃ ● Furnace door inside is polished stainless steel
Working voltage	380V 50HZ 3P (or according to your standard)
Max. power	5KW–180KW
Temperature controlling	● PLC or PID automatic control via SCR (Silicon Controlled Rectifier) power control with phase angle fired, current limiting resistor. ● 51 programmable segments for precise control of heating rate, cooling rate and dwell time. ● Built in PID Auto-Tune function with overheating & thermocouple broken protection. ● Over temperature protection and alarm allows for operation without an attendant.
Optional of temperature controlling	● Software (Furnace can be operated by PC by installing a control software ) ● Touch screen temperature controller
Temperature accuracy	±1℃
Heating rate	Heating rate<20 ℃/min
Thermocouple	1200℃ (S type) 1350℃ (S type) 1700℃ (B type) 2200℃ (W-Re type)
Maximum vacuum	7×10-4Pa
Vacuum pump	● 10Pa with Double stages rotary pump ● 7×10-1Pa with Mechanical pump and Roots pump ●7×10-3Pa with Mechanical pump and Diffusion pump ●7×10-4Pa with Mechanical pump and Molecular pump
Warranty	● One year limited warranty with lifetime support. (Consumable parts such as heating elements and crucibles are not covered by the warranty, please order the replacement at related products) ● ATTENTION: Any damages caused by the use of corrosive and acidic gases are not under the coverage of One Year Limited Warranty.
Certifications	CE
Ⅱ. Application Notes
Using Attentions	● Cooling rate shall also not exceed 5 ℃ /min. ● Toxic or explosive gases are not recommended for use with this furnace without necessary safety controls and supervision. ● Small cracks may appear on the surface of the refractory ceramics over extended use.

Customized high temperature vacuum furnace as below: (other sizes can be customized)

Parameter	Specification
Model	DW-1200-M
Furnace Chamber Dimensions	600 × 600 × 2300 mm (Alumina Ceramic)
Maximum Working Temperature	1200°C
Long-term Working Temperature	1100°C
Temperature Uniformity	±5°C (within effective working zone)
Heating Rate	0-20°C/min (adjustable)
Ultimate Vacuum	7×10⁻³ Pa
Vacuum System	Mechanical Pump: 25 L/s Molecular Pump: 1500 L/s Vacuum Gauge: Full-range ionization gauge
Power Supply	380V, Three-phase five-wire system, Rated Power: 60 kW
Heating Elements	Molybdenum wire heaters with multi-zone control
Temperature Control	PID Controller with program segment control Thermocouple: Type B
Cooling System	Water-cooled (20 L/min) Closed-loop circulation system
Protective Gas	High-purity N₂/Ar (99.999% purity)
Control System	PLC automatic control Touch screen HMI Data logging and export function
Safety Protection Devices	Over-temperature protection Over-pressure protection Water flow protection Power failure protection Emergency stop
Magnetic Field Shielding	High magnetic permeability alloy shielding
Overall Dimensions	1800 × 1500 × 2800 mm
Weight	Approx. 3500 kg
Process Atmosphere	Vacuum / Inert gas
Operation Mode	Fully automatic/manual optional
Workpiece Specifications	Diameter: 4 mm Length: up to 200 mm
Application Field	Magnetic materials sintering High-performance permanent magnet preparation

Heating Wires High Temperature Vacuum Furnace up to 1200℃

Model	Max Temp.	Chamber size (WxHxD)	Heating element	Capacity (L)	Power (KW)	Vacuum
DW-12HVF-1	1200	100100100	Resistance wire	1	1.2	7*10-3Pa
DW-12HVF-5	1200	150150200	Resistance wire	4.5	3.5	7*10-3Pa
DW-12HVF-12	1200	200200300	Resistance wire	12	5	7*10-3Pa
DW-12HVF-36	1200	300300400	Resistance wire	36	12	7*10-3Pa
DW-12HVF-64	1200	400400600	Resistance wire	96	24	7*10-3Pa
DW-12HVF-125	1200	500500700	Resistance wire	175	36	7*10-3Pa
DW-12HVF-216	1200	600600900	Resistance wire	324	56	7*10-3Pa

Molybdenum Foil High Temperature Vacuum Furnace up to 1350℃

Model	Chamber size	Temp.	Power（KW)	Voltage	Max.Vacuum
DW-QHM-223	200200300	1350℃	42	380V	7×10-4 Pa
DW-QHM-334	300300400	1350℃	72	380V
DW-QHM-446	400400600	1350℃	120	380V
DW-QHM-557	500500700	1350℃	160	380V
DW-QHM-669	600600900	1350℃	225	380V

MoSi2 Heater High Temperature Vacuum Furnace up to 1700℃

Model	Max Temp. (℃)	Chamber size (WxHxD) (mm)	Heating element	Capacity (L)	Power (KW)	Max. Vacuum
DW-17VF-1	1700	100100100	MoSi2 heater	1	1.5	7×10-3 Pa (7×10-5 mbar)
DW-17VF-5	1700	150150200	MoSi2 heater	4.5	5
DW-17VF-12	1700	200200300	MoSi2 heater	12	8
DW-17VF-36	1700	300300400	MoSi2 heater	36	12
DW-17VF-80	1700	400400600	MoSi2 heater	96	30
DW-17VF-175	1700	500500700	MoSi2 heater	175	45
DW-17VF-324	1700	600600900	MoSi2 heater	324	70

High Temperature Graphite Vacuum Furnace up to 2200℃

Model	Heating Zone *(Dia. Height)**	Temperature	Power	Voltage	Max. Vacuum
DW-22STV-20	Φ80×100mm	2200℃	20kW	380V	7×10-3 Pa (7×10-5 mbar)
DW-22STV-25	Φ90×120mm	2200℃	25kW	380V
DW-22STV-40	Φ140×160mm	2200℃	40kW	380V
DW-22STV-50	Φ160×200mm	2200℃	50kW	380V
DW-22STV-60	Φ260×270mm	2200℃	60kW	380V
DW-22STV-100	Φ320×320mm	2200℃	100kW	380V

For precision thermal processing, a laboratory vacuum furnace is the gold standard. Whether you’re engaged in fundamental materials research, developing advanced alloys, or producing high-purity components, investing in vacuum heat treatment technology ensures reliable, scalable, and contamination-free results.

For more information on laboratory vacuum furnaces and custom configurations for your heat treatment requirements, consult reputable manufacturers or request detailed technical guidance tailored to your application.