High-Temperature Tube Furnace for Controlled Gas Atmosphere Experiments

• Customization: Available
• Certification: CE, ISO
• Place Style: Horizontal
• Model NO.: GWDL-LKQGA
• Range of Applications: Industrial
• Type: Electric Holding Furnace
• Usage: Sand Casting
• Fuel: Electric
• Temperature Range: Rt-1200c (Long-Term ≤1200c )
• Tube Material: Quarts Glass (Optional)
• Tube Dimensions: Customized
• Heating Method: Horizontal Surround Heating
• Flange Type: Stainless Steel
• Temperature Accuracy: ±1 C
• Temperature Uniformity: ±1 C (Multi-Point Control for Large Cha
• Vacuum System: 2L/S Pump with Double-Seal Flanges
• Heating Rate: Adjustable: 1°c/Hour to 40°c/Min (Non-Line
• Temperature Control: Pid + SCR, 50-Segment Programmable
• Furnace Lining: Vacuum-Formed High-Purity Alumina
• Gas Inlets: 2 Standard (Expandable to 10)
• Overpressure Protection: Automatic Shutdown, Exhaust Open, Alarm Activated
• Gas Leak Detection: Real-Time Sensor with Automatic System Response
• Safety Features: Auto Disconnect When Door Opens at High Temp
• Transport Package: Wooden Case
• Specification: VACUUM: -0.1Mpa
• Trademark: GWDL
• Origin: China
• HS Code: 8514199000

Product Description

Three-Zone Vertical Tube Furnace with Integrated Atmosphere Control System

This advanced three-zone vertical tube furnace features independent temperature zones and a built-in gas control cabinet, ideal for gradient heating, atmosphere-sensitive processes, and complex material research. Precise thermal zoning and programmable control ensure uniformity and repeatability across each zone, making it suitable for advanced ceramics, semiconductor testing, and thermochemical experiments.

MODEL: GWDL-LKQGA
Tmax ℃	Tube Material	Tube Outer Diameter (mm)	Heating Zone Length (mm)	Tube Length (mm)	Voltage/Power
1200	Quartz glass	D30-D60	300	1200	220V,4KW
1200	Quartz glass	D60-D80	300	1200	380V,5KW
1200	Quartz glass	D100-D120	300	1200	380V,8KW
1200	Quartz glass	D130-D150	300	1200	380V,10KW
1200	Quartz glass	D160-D180	300	1200	380V,12KW
1200	Quartz glass	D200-D250	300	1200	380V,15KW
1400	Alundum Tube	D30	300	1200	220V,3KW
1400	Alundum Tube	D50	300	1200	380V,4KW
1400	Alundum Tube	D60	300	1200	380V,6KW
1400	Alundum Tube	D80	300	1200	380V,8KW
1400	Alundum Tube	D100	300	1200	380V,10KW
1400	Alundum Tube	D120	300	1200	380V,10KW
1600	Alundum Tube	D30	300	1200	220V,3KW
1600	Alundum Tube	D50	300	1200	380V,4KW
1600	Alundum Tube	D60	300	1200	380V,6KW
1600	Alundum Tube	D80	300	1200	380V,8KW
1600	Alundum Tube	D100	300	1200	380V,10KW

Product Description

Max Temp	Operating Temp	Heating Element	Thermocouple	Tube Material
1200℃	1150℃	High-temperature alloy resistance wire or SiC	K type	SS/Quartz/Alumina
1400℃	1350℃	SiC	S type	High purity alumina
1600℃	1550℃	MoSi2	B type	High purity alumina
1700℃	1650℃	MoSi2	B type	High purity alumina
1800℃	1750℃	MoSi2	B type	High purity alumina
Customized	Upon request	W/ Graphite /Mo	B type/C type	W/ Graphite /Mo

STANDARD Technical Specifications

Voltage Input: 220V/380V AC, single-phase or three-phase optional
Temperature Control Accuracy: ±1℃
Temperature Uniformity: ±1℃ (Multi-zone control available for large furnaces)
Heating Zone Layout: Surrounding the tube, horizontally aligned
Max Heating Rate: 40℃/min (non-linear), adjustable down to 1℃/hour

Atmosphere & Vacuum Control

Vacuum Level: -0.1MPa with dual-stage rotary vane vacuum pump (2L/min)
Flanges: 304 stainless steel KF flanges with double O-rings
Atmosphere Capability: Supports up to 10 types of gases (O2, N2, Ar, H2, etc.)
Gas Flow Regulation: Independent flow meters or mass flow controllers
Standard Flowmeters: 2 pcs (0–300 ml/min), customizable
Pressure Monitoring: Analog compound gauge (positive/negative); digital optional

Safety Systems:

Overpressure Protection: Electromagnetic exhaust valve triggered by pressure sensor
Gas Leakage Alarm: Auto shut-off and exhaust in case of hazardous gas detection

Construction & Insulation

Furnace Shell: CNC processed, polished, acid-washed, phosphated, powder-coated
Outer Shell Temp: <45℃ under continuous operation
Furnace Chamber: High-purity alumina vacuum-formed insulation with alumina hollow sphere plates at tube ends for durability
Insulation System: Triple-layer composite of ceramic fiberboard and polycrystalline alumina board
Furnace Structure: Dual-layer air-cooled housing with guided cooling airflow design to prevent heating element oxidation

Temperature Control & Interface

Temperature Controller:

1. Intelligent PID control with auto-tuning and learning
2. Up to 50 programmable segments
3. Smooth ramping control with curve fitting capability
4. Supports jump, loop, hold, and stop operations
Multi Program Groups: Group 1 – 50 segments; Group 2 – 28; Group 3 – 15; Group 5 – 9
Interface: RS485 / RS232 / USB communication ports
Control Mode: Closed-loop SCR (thyristor) phase-angle or zero-crossing triggering with constant voltage/current/power control and feedback protection

Display & Operation

Displayed Parameters: Real-time temperature, segment number, time, remaining time, output power %, voltage, current
Control Buttons: Imported LED-indicated pushbuttons, lifespan >100,000 cycles

Standard Accessories

Heating elements x2
Tube holders x2
Alumina crucible (tube-style) x1
Thermal insulation plugs x2
Vacuum sealing rings x2
User manual and certificate

Included Components

KF flange assembly
Water-cooled flange (if applicable)
Vacuum pump
Basic pressure gauge (gas mixing and control system optional/customizable)

Warranty

Furnace body: 1-year free warranty (excluding heating elements and furnace tube)
Temperature controller, thermocouple, transformer: 2 years warranty
Heating elements: 3 months replacement for manufacturing defects

Company Profile

Luoyang Juxing Kiln  Co., Ltd.

Founded in 2008 in Luoyang, China, Luoyang Juxing Kiln & Furnace Co., Ltd. is a national high-tech enterprise and council member of the China Heat Treatment Association specializing in advanced thermal solutions. As an innovative leader in high-temperature technology, we design and manufacture precision electric furnaces for industrial and research applications, with an unparalleled temperature range from -100°C to 2600°C. 
Our  products serve Worldwide companies, laboratories, and leading universities across , including key markets in Europe, North America, and Asia. Recognized for our expertise in new energy, semiconductors, and advanced materials sectors, we combine rigorous R&D with smart manufacturing to deliver reliable, eco-friendly thermal systems. 

We specialize in the R&D and manufacturing of high-temperature electric furnaces and kilns, offering a temperature range from -100°C to 2600°C to meet the challenges of demanding industrial environments. Our products are widely applied in new energy, semiconductors, functional ceramics, photovoltaic power, aerospace, biomedicine, and more-serving Fortune 500 companies, top laboratories, and leading universities across over 50 countries and regions, including Europe, the United States, Japan, South Korea, and Southeast Asia.

Looking ahead, we remain dedicated to our core values of innovation, precision, and customer focus. By strengthening international collaboration and enhancing our global service system, we aim to provide more efficient, intelligent, and eco-friendly thermal solutions-empowering industrial progress and sustainable development across the globe.

Our showroom offers a comprehensive display of our core products, including box furnaces, muffle furnaces, vacuum atmosphere furnaces, melting block furnaces, and tube furnaces. For large-scale industrial kilns, 3D-printed models are presented to help visitors better understand the structural design and application scenarios. In addition to product displays, the showroom also features our company's development history, global customer collaborations, as well as certifications and patents. We sincerely welcome every customer visit and hope to provide a clear, intuitive understanding of our manufacturing capabilities and innovation strength.

Cooperation Case

We are proud to have delivered large-scale thermal engineering projects to clients across the globe. Committed to providing reliable and efficient heat treatment solutions, we support our customers in achieving both scientific innovation and industrial advancement.

Backed by a professional R&D team and skilled technical engineers, we offer fully customized services throughout the entire process-from pre-sales consultation to on-site commissioning and after-sales support.

Choosing Juxing means more than choosing a furnace-it's choosing a long-term partner you can trust. We look forward to building lasting partnerships and creating success together with customers worldwide.

Certifications

Innovation lies at the heart of our growth. We are certified under ISO9001, ISO14001, and ISO45001 international management systems, and hold CE and SC certifications, with partial compliance to WPS and WPC standards. To date, we have secured 21 registered trademarks, 29 patents, 27 software copyrights, and 7 industry certifications. Our consistent annual investment of 15% in R&D fuels ongoing technological innovation and product excellence.

WORKSHOP SCENE

Technical Supports

Free Training Services

Juxing Kiln provides professional and complimentary training services for customers, including on-site observations and hands-on learning of electric furnace operation skills. Participants will gain practical knowledge in assembly, debugging, and maintenance, with direct guidance from our experts.

Training Highlights

1. Electric Furnace Operation:
Covers installation, wiring, operational standards, program settings, and instrument usage.

2. Routine Maintenance:
Essential practices for maintaining, repairing, and replacing key components.

Why Choose Us?

1. Efficiency Boost:
Our technicians train clients in critical maintenance skills, significantly reducing downtime and enhancing productivity.

2. Convenient Accommodations:
Free lodging and meals are provided for clients visiting our facility for training and evaluations.

One-Stop After-Sales Service

1. Receive Customer Calls
Customer inquiries and service requests are received promptly by our Service Center.

2. Retrieve Customer Data
Relevant customer and equipment data are retrieved to understand the service context.

3. Phone Communication Within 2 Hours
Our team provides initial phone consultation within 2 hours to assess the issue.

4. Quality Analysis
The Quality Department conducts an in-depth analysis to determine the cause of the issue and provides a quality analysis conclusion.

5. Technical Response
The Technical Department develops a targeted repair plan, based on the analysis findings.

6. Arrange On-site Service (if required)
If the issue cannot be resolved remotely:

Maintenance personnel are promptly arranged.
On-site repair is scheduled for effective issue resolution.
7. Resolution Tracking
The service status is tracked as either:

Completed – Issue Resolved, or
Not Resolved – Further Action Required
8. Documentation
All cases are submitted to the R&D Department for archival, supporting product improvement and traceability.