Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

Product Details
Customization: Available
After-sales Service: on-Line Service
Warranty: One Year
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Year of Establishment
2025-04-22
Registered Capital
1.48 Million USD
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
  • Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
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Basic Info.

Model NO.
Made-to-order
Type
Coating Production Line
Coating
Vacuum Coating
Substrate
Steel
Certification
CE
Condition
New
Sample Stage
Dia. 100mm
Heating Temperature
Max 500ºC
Rotate Speed
1-30rpm Adjustable
Chamber Material
High Purity Quartz
Transport Package
Wooden Case
Specification
Customized
Trademark
RJ
Origin
Zhengzhou, China

Product Description

 

Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThis high-temperature vertical tube furnace is mainly composed of a material preheating furnace, reaction furnace, gas preheating furnace, control cabinet, gas supply system, feeding device, and collection device. The furnace chamber is made of lightweight ceramic fiber for precision construction, with a sliding left-right opening for easy access, allowing sintering under various inert atmospheres. The heating elements utilize high-quality alloy heating wires, which provide fast heating rates, high-temperature resistance, oxidation resistance, corrosion resistance, and rapid temperature rise. The intelligent PID 30-segment temperature control ensures high precision in temperature regulation.
Here is the direct translation of the provided specifications into an English table format:  

Part 1: Material Preheating Furnace + Feeding Device

Component Specification
Structure Double-layer shell, manually lifted structure
Operating Temperature < 1000°C
Temperature Control PID 30-segment programmable automatic control
Heating Element High-quality resistance wire
Furnace Tube Material High-quality metal tube
Quartz Tube Size ≈ Φ80mm × 1000mm (customizable per customer requirements)
Temperature Protection Over-temperature and segment failure alarm
Heating Rate Adjustable 0-10 °C/min
Measuring Element Type N thermocouple
Sealed Feeding Device Sealed feed chamber: Easy-open top cover, uniform volume, pre-installed gas inlet.
 

Part 2: Reaction Furnace + Gas Preheating Furnace

Component Specification
Structure Double-layer shell, manual vertical sliding opening; reaction furnace and gas preheating furnace can be opened independently.
Maximum Temperature 1200°C
Temperature Control PID 30-segment programmable automatic control
Heating Element High-quality resistance wire
Furnace Tube Material High-quality metal tube
Quartz Tube Size ≈ Outer diameter 100mm × 2500mm (customizable per customer requirements)
Heating Zone ≈ 1800mm, 6 zones (independently adjustable, customizable)
Temperature Protection Over-temperature and segment failure alarm
Heating Rate Adjustable 0-10 °C/min
Measuring Element Type N thermocouple
Sealing System Top: Double-layer water-cooled sealing flange with automatic feed port, manual feed port, adjustable gas sampling port (for thermocouple/gas probe), and exhaust port. Bottom: Sealing flange with gas inlet, connected to a sealed collection chamber (with pre-installed gas inlet).
Compatible Gases Any inert gas (high purity, positive pressure < 0.02MPa)
 

Part 3: Gas Supply System

Component Specification
Gas Channels Supports 4 gas sources simultaneously (Note: Inert gases recommended; user must provide safety devices for hazardous gases.)
Flow Meter Mass flow controller (MFC)
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

This vertical fluidized bed tube furnace is equipped with feeding and discharge chambers, enabling continuous material handling and significantly improving heat treatment efficiency. The fluidized bed features a vertically arranged furnace tube and a circular heating element distribution within the furnace chamber, making it suitable for annealing and tempering heat treatments of small steel components, as well as vertical CVD coating applications.

The system can operate under controlled atmospheres or vacuum conditions and may also function as a conventional tube furnace. It is ideal for university laboratories, research institutes, and similar scientific facilities.

Parameter Specification
Heating Zone Length Dual-zone, 400mm + 400mm (customizable per customer requirements)
Furnace Tube Dimensions Outer diameter: 100mm × Length: 1200mm (customizable)
Furnace Tube Material Stainless steel
Automatic Feeding System Customizable design with:
- Gas inlet at tube bottom
- Screw conveyor for heavy particle extraction
- Top tube configuration tailored to requirements
 

Temperature Control System

Parameter Specification
Operating Temperature ≤1000°C
Temperature Sensor Type N thermocouple
Control System Intelligent 30-segment PID programmable control:
1. AI-based PID adjustment with self-tuning
2. Multi-stage heating/cooling programs
3. Accuracy: ±1°C
4. Over-temperature/breakage protection (auto power cutoff)
5. Touchscreen operation with data logging/export
Heating Rate Recommended ≤10°C/min (adjustable per process needs)
Heating Element Resistance wire
Furnace Lining Material Dual-layer alumina fiber boards (excellent insulation, high reflectivity, uniform temperature):
- 1200°C alumina fiber
- 1400°C alumina fiber
 

Sealing & Structural Components

Parameter Specification
Flange Stainless steel vacuum flange (easy disassembly)
Sealing System O-ring compression seal between tube/flange:
- Reusable, leak-tight, quick-release design
Fluidization Zone 1. Uniform gas distribution through reaction zone
2. Solid particles suspended by gas flow in heating zone
3. Openable furnace body for post-experiment quartz tube/particle removal
Note Excessive gas flow may carry particles beyond heating zone; adjust flow rate based on particle size.
Shell Structure Double-layer carbon steel shell with air cooling, openable design
Furnace Orientation Vertical structure
Flange (Fluidized Bed) Rubber-sealed flange (with analog vacuum gauge)

Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
It is a fluidized bed vertical tube furnace specifically designed for CVD experiments involving powder surface deposition. The furnace tube is made of high-purity quartz and features an internal sintered plate with a pore size of 50 microns. The powder can be placed on a porous quartz plate, and gas can be introduced from the lower end of the furnace tube. The gas passes through the porous quartz plate, suspending the sample particles in the heating zone for deposition experiments. The system is equipped with reserved gas inlet/outlet ports and a vacuum pump interface, allowing it to be used in conjunction with a vacuum pump. (Note: When introducing gas to suspend the sample particles, excessive gas flow may cause the particles to pass through the heating zone. Therefore, during experiments, the gas flow rate should be adjusted according to the particle size.)

Fluidized Bed Vertical Tube Furnace Specifications

Heating Zone Length Five heating zones, 100mm each, total length 500mm (customizable per customer requirements)
Furnace Tube Size Diameter 25mm × 1200mm (customizable per customer requirements)
Tube Material High-purity quartz tube with built-in 40-90μm sintered plate (customizable)
Operating Temp. ≤1100°C
Max. Temperature 1200°C
Temperature Sensor N-type thermocouples (5 units)

Temperature Control System

  • Uses AI-based PID regulation with auto-tuning and multi-segment programming.

  1. PID temperature control with programmable heating/cooling stages.

  2. Temperature accuracy: ±1°C.

  3. Over-temperature and power failure protection (automatic circuit cutoff).

  4. Auto-tuning function for temperature calibration.

  5. Touchscreen operation with data logging and export capabilities.

Temp. Control Accuracy ±1°C
Safety Protection Over-temperature and power failure protection
Heating Rate Recommended 10°C/min (adjustable per process requirements)
Heating Element Resistance wire
Furnace Chamber Material Polycrystalline fiber insulation (excellent thermal insulation, high reflectivity, uniform temperature distribution)
Flange Stainless steel vacuum flange (easy disassembly)
Sealing System O-ring compression seal (reusable, high airtightness, easy removal)

Fluidization Zone Features

  1. Reaction gas flows uniformly through the reaction zone.

  2. Solid particles are suspended in the heating zone by the gas flow.

  3. Open-body design: After experiments, the furnace can be opened to remove the quartz tube and processed particles.
    Note: Excessive gas flow may carry particles beyond the heating zone; adjust flow rate based on particle size.

Furnace Structure & Gas Control

Furnace Structure Vertical design
Gas Flow Control Equipped with argon float flow meters (flow range customizable per user needs)
Gas Ports Two inlets (bottom), one outlet (top)
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
This customized micro vertical tube furnace features an upright furnace body and tube, allowing reaction materials to pass smoothly through the reaction zone. The equipment in this series has a simple and user-friendly control system, offering advantages such as uniform temperature distribution, safety and reliability, ease of operation, high temperature control accuracy, excellent thermal insulation, fast heating and cooling rates, and energy efficiency. The 1100°C vertical tube furnace is primarily used for industrial applications such as vacuum sintering, protective atmosphere sintering, vacuum deposition, CVD experiments, and material composition testing in the preparation of rare earth materials, electronic lighting, crystal annealing, bioceramics, electronic ceramics, special alloys, magnetic materials, precision casting, and metal heat treatment.
Parameter Description
Display LED or LED touch screen (customizable)
Working Temperature ≤1100°C
Heating Rate 0-10°C/min
Temperature Uniformity ±1°C
Tube Diameter 950×600 mm (OD) (customizable upon request)
Heating Length 200 mm (customizable upon request)
Heating Elements Resistance wire
Tube Material High-purity quartz tube
Chamber Material Alumina fiber
Thermocouple Type N
Temperature Control PID automatic control via SCR (thyristor) power regulation, with phase-angle triggering and current-limiting resistance.
30 programmable segments for precise heating/cooling rate and dwell time control.
Built-in PID auto-tuning, with overheat and thermocouple break protection.
Over-temperature protection and alarm for unattended operation.
Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingMain Applications: The 1600°C high-temperature tube furnace is widely used for various CVD experiments requiring reaction temperatures around 1600°C. It is also suitable for vacuum sintering, protective atmosphere sintering, battery materials, and the preparation of nanomaterials, among other applications.
Tube Furnace Section Display LED or LCD touch screen (optional at extra cost)
Working Temperature ≤1600°C
Heating Zone Single heating zone, 300mm (customizable per customer requirements)
Heating Element Silicon molybdenum (SiMo) rods
Thermocouple Type B
Temperature Control Accuracy ±1°C
Tube Size OD 50mm (customizable per customer requirements)
Material Alumina tube
Temperature Control PID automatic control via SCR power regulation
Heating Program 30-step programmable
Heating Rate 0-10°C/min
Warranty 1-year warranty (consumables such as heating elements are not covered)
 
 
 
 
Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThe high-temperature tube furnace utilizes a high-purity quartz tube as the furnace tube, with a maximum working temperature of 1200°C. This series of equipment features a user-friendly control system and offers advantages such as uniform temperature distribution, safety and reliability, ease of operation, high temperature control accuracy, excellent thermal insulation, rapid heating/cooling rates, and energy efficiency. Equipped with a vacuum system, it supports atmosphere introduction and vacuum pumping, and the vacuum pump can be selected based on customer-specified vacuum requirements. It is widely used in experiments conducted by universities, research institutes, and industrial enterprises.
Parameter Specification
Maximum Temperature 1200°C
Continuous Working Temperature ≤1100°C
Furnace Structure Double-layer shell design with automatic cooling system
Heating Rate Recommendation ≤10°C/min
Tube Material High-purity quartz tube
Chamber Material Premium high-purity alumina polycrystalline fiber chamber formed by Japanese vacuum adsorption technology, featuring excellent insulation, high reflectivity and uniform temperature distribution
Tube Dimensions Tapered tube φ10φ8600mm (customizable)
Heating Zone Length 200mm (customizable)
Flange Stainless steel sealing flange with quick-disconnect design, equipped with precision needle valve
Temperature Control System 1. AI-based PID control with auto-tuning
2. 30-segment programmable heating/cooling
3. Control accuracy ±1°C
4. Over-temperature and thermocouple failure protection
5. Automatic temperature calibration
Heating Element Resistance wire
Temperature Sensor Type N thermocouple
Gas Inlet/Outlet Integrated into flange
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

Multi-station Tube Furnace

This furnace utilizes high-purity quartz tubes as the reaction chamber, with an operating temperature range of 300°C to 1100°C. The control system of this series is internationally advanced, offering high safety, reliability, and user-friendly operation. It features precise temperature control (±1°C), excellent thermal insulation, superior temperature uniformity, and vacuum/atmosphere compatibility.

Widely used in experiments and small-batch production at universities, research institutes, and industrial enterprises.

Parameter Specification
Furnace Structure Double-shell design
Furnace Material High-purity alumina polycrystalline fiber
Maximum Temperature 1200°C
Working Temperature 1100°C
Recommended Heating Rate ≤10°C/min
Tube Material High-purity quartz
Tube Dimensions OD: 50mm × ID: 44mm × Length: 1000mm (customizable)
Heating Zone Length 200mm (customizable)
Rotation Mechanism 180° multi-angle rotatable chamber, detachable and height-adjustable
Flange KF quick-release stainless steel sealing flange
Temperature Control System <ul><li>AI-based PID control with auto-tuning</li><li>30-segment programmable heating/cooling</li><li>Control accuracy: ±1°C</li><li>Safety features:<ul><li>Over-temperature protection (auto-cutoff at >1200°C)</li><li>Thermocouple failure protection</li><li>Automatic main power cutoff with visual indicators (ON/OFF lights)</li></ul></li><li>Auto-calibration function</li></ul>
Heating Element Resistance wire
Temperature Sensor Type N thermocouple
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating
This tubular furnace features an upright furnace body and tube, allowing reaction materials to pass smoothly through the reaction zone. With a four-zone design, each temperature zone can be independently controlled, and the maximum working temperature reaches 1300°C. This fluidized bed tubular furnace is primarily used in university laboratories and industrial research labs for high, medium, and low-temperature CVD processes, such as organic pyrolysis (or cracking), carbon nanotube synthesis, crystalline silicon substrate coating, diffusion welding of metal materials, as well as heat treatment under vacuum or controlled atmospheres.
Parameter Description
Working Temperature ≤1300°C
Shell Structure Double-layered, electrostatic spray coating
Furnace Chamber Material High-purity polycrystalline alumina ceramic fiber, offering excellent thermal insulation, high reflectivity, uniform temperature distribution, and strong resistance to thermal expansion and contraction
Heating Elements Premium straight silicon carbide rods
Heating Rate Room temperature to 1000°C: ≤10°C/min
1000°C to 1200°C: ≤5°C/min
1200°C to 1300°C: ≤2°C/min
Temperature Control System PID regulation, 30-segment programmable automatic control
Temperature Protection Over-temperature and thermocouple break alarm
Temperature Accuracy ±1°C
Temperature Sensor S-type platinum-rhodium thermocouple
Heating Zones 4 zones (300+300+300+300 mm), total heating length 1200 mm, independently controllable (customizable upon request)
Furnace Tube Corundum tube, Φ60×1800 mm (customizable upon request)
Door Opening Method Front side-opening
Feeding Method Top feeding (continuous feeding device to be purchased separately by the buyer)
Flange Design Top Flange: Equipped with feed inlet, gas inlet, gas dispersion device, and mechanical vacuum pressure gauge
Bottom Flange: KF interface for cyclone separator, exhaust pipe connected to safety pressure relief valve and dust filter
Gas Control System 2-path mass flow meters
Precautions 1. When introducing gas into the furnace tube, a pressure-reducing valve must be installed on the gas cylinder.
2. For sample heating experiments, it is not recommended to close the exhaust and intake valves at the furnace tube flange. If valves must be closed during heating, monitor the pressure gauge closely. If the pressure exceeds 0.02 MPa, immediately open the intake valve to prevent accidents (e.g., tube rupture, flange ejection).
3. When the temperature exceeds 900°C, the furnace tube must not be under vacuum; internal pressure should be maintained at atmospheric level.

Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThis vertical tubular furnace is a custom-designed model for customers, primarily used for heat treatment processes such as quenching, annealing, and tempering of small steel components, as well as vertical CVD coating. The equipment can operate under controlled atmospheres or vacuum conditions and can also function as a standard tubular furnace. It is suitable for use in university laboratories, research institutes, and similar institutions.
Parameter Description
Display LED or LED touch screen (customizable)
Working Temperature ≤1100°C
Heating Rate 0-10°C/min
Temperature Uniformity ±1°C
Tube Diameter 950×600 mm (OD) (customizable upon request)
Heating Length 200 mm (customizable upon request)
Heating Elements Resistance wire
Tube Material High-purity quartz tube
Chamber Material Alumina fiber
Thermocouple Type N
Temperature Control PID automatic control via SCR (thyristor) power regulation, with phase-angle triggering and current-limiting resistance.
30 programmable segments for precise heating/cooling rate and dwell time control.
Built-in PID auto-tuning, with overheat and thermocouple break protection.
Over-temperature protection and alarm for unattended operation.

Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThis is a vertical fluidized bed tubular furnace specifically designed for CVD experiments involving solid-phase vapor deposition. The furnace tube is made of high-purity quartz with a customized shape and features an embedded quartz mesh for fixation. Powder 2 is fed from the top of the tube onto this mesh. Another mesh is fixed to the movable flange assembly. Nitrogen and acetylene are then introduced to fluidize Powder 1 gas through the upper mesh into the coating reaction zone, while Powder 2 particles are carried into the reaction zone for deposition experiments.
Parameter Description
Heating Zone Length 300+300 mm, dual-zone (customizable upon request)
Furnace Tube Size Φ50×1200 mm (customizable upon request)
Tube Material High-purity quartz tube with built-in 5-20μm mesh (customized)
Working Temperature ≤1100°C
Maximum Temperature 1200°C
Thermocouple Type N
Temperature Control System Intelligent 30-segment PID auto-control via thyristor power regulation with auto-tuning function
Built-in overheat and thermocouple break protection
Temperature Control Accuracy ±1°C
Heating Rate Recommended 0-10°C/min
Heating Elements Resistance wire
Chamber Material Alumina ceramic fiber
Vacuum Flange Stainless steel vacuum flange with valves and needle valve
Vacuum Pump Rotary vane vacuum pump
Gas System Two-path float flowmeters for oxygen and acetylene, adjustable for material fluidization
 Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThis vertical tubular furnace features a vertically oriented furnace tube and an annular heating element distribution design, making it suitable for heat treatment processes such as annealing and tempering of small steel components, as well as vertical CVD coating applications. The equipment can operate under controlled atmospheres or vacuum conditions, and may also function as a conventional tubular furnace. It is ideally suited for university laboratories, research institutes, and similar scientific institutions.
Parameter Description
Furnace Structure Vertical open-type structure with double-layer shell and automatic cooling system
Furnace Chamber Material High-purity alumina polycrystalline fiber vacuum-formed chamber with excellent thermal insulation, high reflectivity and uniform temperature distribution
Continuous Working Temperature ≤1000ºC
Heating Rate Recommended ≤10ºC/min
Furnace Tube Material 2520 alloy
Tube Structure Dilute phase and dense phase zones connected via transition section, with welded stainless steel side pipes/flanges, top sealed flange with explosion-proof device
Heating Elements Resistance wire
Furnace Composition Split design: rear half fixed with heating elements embedded in insulation layer, front half openable with uniformly distributed resistance wires (wires bypass side pipes in rear section)
Dilute Phase Zone 2520 alloy tube, 500mm heating zone (customizable), lower rear inlet port, thermocouple and mechanical pressure gauge for monitoring, top exhaust connected to dust detection system
Exhaust End Tube extends outside furnace body with branch thermocouple and pressure gauge
Temperature Sensor Type N thermocouple
Control System
• Independent control for dense/dilute phases
• AI-based PID temperature control with 30-segment programming
• ±1ºC accuracy
• Phase failure and filter protections
• Auto-tuning function
Instrumentation Separate display meters for:
• 2 dense phase thermocouples
• 2 dilute phase thermocouples
• 1 exhaust gas thermocouple
(All mounted on control panel)
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

This 1000°C vertical tubular furnace features a unique design that enables rapid sample heating under vacuum or protective atmosphere, with dual-side heating for superior temperature uniformity. The vertical structure ensures smooth exhaust ventilation, while the furnace body is vertically mounted on a movable stand for easy tube access. The top-mounted lifting mechanism accommodates various heating and cooling requirements.

This high-temperature fluidized bed furnace is primarily designed for university laboratories and industrial research facilities, suitable for:

  • Chemical analysis of metals/ceramics

  • Physical property measurements

  • Sintering/dissolution processes

  • Heat treatment of small rigid components (annealing, calcination, etc.)

Key Advantages:

  • Vertical gas flow optimizes reaction byproduct removal

  • Dual-zone heating (±1°C uniformity)

  • Ergonomic access with adjustable height mechanism

  • Multi-process compatibility (vacuum/atmosphere operation)

    Parameter Specification
    Tube Dimensions 60mm (OD)
    Furnace Door Structure Openable design
    Shell Material Stainless steel
    Heating Zone Length 400×400mm
    Cooling Zone 200-600mm (final design dependent)
    Tube Material 310S stainless steel
    Operating Temperature ≤1000°C
    Heating Rate 0-10°C/min
    Furnace Lining Alumina polycrystalline fiber
    Temperature Control Intelligent 80-segment programmable control with independent zone regulation
    Temperature Accuracy ±1°C
    Heating Elements Resistance wire
    Operating Voltage AC 220V 50Hz single phase
    Maximum Power Final design dependent
    Thermocouple Configuration
    • T1: Chamber temperature monitoring (Zone 1)
    • T2: Gas temperature control (400°C)
    • T3: Chamber temperature control (Zone 2)
    • T4: Load thermocouple (top position for crucible temperature measurement)
    Lifting Mechanism Sealed vertical lift system for positioning samples between heating zone (Zone 2) and cooling zone
    Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

    The vertical fluidized bed tubular furnace is specifically designed for CVD experiments involving powder surface deposition. It features a high-purity quartz tube with a custom-shaped design, internally equipped with a quartz boat containing a porous quartz plate (with customizable pore size). The powder sample is placed on the porous quartz plate, and gas is introduced from the bottom of the furnace tube. The gas flows through the porous plate, suspending the particles in the heating zone for deposition experiments.

    Note: During gas injection, excessive flow rates may cause particles to bypass the heating zone. Therefore, the gas flow must be carefully adjusted according to the particle size during experiments.

    Key Features:

  • Customizable porous quartz plate for optimized fluidization

  • Precise gas flow control to maintain particle suspension

  • High-purity quartz construction ensuring chemical inertness

  • Vertical design for efficient gas-solid interaction

    Parameter Specification
    Heating Zone Length 440mm (customizable)
    Furnace Tube Dimensions Φ60×1000mm (customizable)
    Tube Material High-purity quartz tube with built-in 0.2mm porous quartz plate (customized)
    Operating Temperature ≤1100°C
    Maximum Temperature 1200°C
    Temperature Sensor Type N thermocouple
    Temperature Control System Intelligent 30-segment PID programmable control with auto-tuning function
    Temperature Accuracy ±1°C
    Temperature Protection Over-temperature and thermocouple break protection
    Heating Rate Recommended 0-10°C/min
    Heating Elements Resistance wire
    Furnace Lining Material Polycrystalline fiber with excellent insulation, high reflectivity and uniform temperature distribution
    Flange Detachable stainless steel vacuum flange
    Sealing System O-ring compression seal (reusable, good airtightness)

    | Fluidization Zone Features | 1. Reaction gas flows uniformly through reaction zone
    2. Solid particles are suspended in heating zone by gas flow
    3. Openable design allows easy tube removal after experiments |
    | Important Note | Gas flow must be adjusted according to particle size to prevent particles from bypassing heating zone |

    Additional Features  
    Pressure Gauge Mechanical pressure gauge at gas outlet
    Shell Structure Double-walled with air cooling system, openable design
    Furnace Structure Vertical configuration
    Flow Meter Hydrogen float flow meter for precise fluidization control

    Key Advantages:

  • Customizable porous plate for optimized fluidization

  • Precision temperature control (±1°C accuracy)

  • Quick-access design for sample handling

  • Versatile gas flow control for different particle sizes

Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThe vertical tube furnace adopts a structural design with the furnace tube placed vertically and the heating elements arranged in a circular distribution within the furnace chamber. It can be used for heat treatment processes such as quenching, annealing, and tempering of small steel parts, as well as vertical CVD coating. The equipment can operate under atmospheric or vacuum conditions and can also serve as a conventional tube furnace. It is suitable for university laboratories, research institutions, and small-batch production in enterprises.
Parameter Specification
Max Temperature 1200°C
Uniform Heating Zone 120mm × 440mm (Customizable upon request)
Tube Diameter 100mm (Customizable upon request)
Number of Heating Zones Single zone (Customizable upon request)
Insulation Material High-purity alumina fiber lining, reducing heat loss and ensuring high-temperature stability.
Shell Material High-quality cold-rolled steel plate, electrostatic powder-coated for a hard and durable finish with excellent rust resistance.
Furnace Door Side-opening
Main Controller PID 30-segment programmable control
Over-temperature alarm
Thermocouple break alarm
Temperature Sensor Type N thermocouple
Heating Element Resistance wire
Heating Rate 0-10°C/min
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

This equipment adopts a resistance wire as the heating element, featuring a double-layer shell structure and a 30-segment programmable temperature control instrument with phase-shift triggering and thyristor control. The furnace chamber is constructed with alumina polycrystalline fiber material, and the furnace tube is made of stainless steel. The openable furnace door design allows for easy tube replacement.
This high-temperature vertical tube furnace offers advantages such as uniform temperature distribution, low surface temperature, fast heating/cooling rates, and energy efficiency.

Parameter Specification
Furnace Type Vertical, openable
Furnace Material Alumina refractory fiber
Heating Element Resistance wire
Working Temperature ≤1000°C
Heating Rate Adjustable (0~10°C/min)
Heating Zones Dual zones (preheating zone + high-temperature zone)
Total Zone Length 200+200 / 300+300 / 400+400 mm (customizable upon request)
Tube Material Custom stainless steel tube
Tube Diameter 40, 50, 60, 80, 100, 120, 200 mm (customizable upon request)
Control Mode Multi-segment intelligent PID programmable control, (reserved communication interface)
Metal Tube Length 440mm + 380mm (customizable upon request)
Temperature Sensor Type N thermocouple
After-Sales Service 1-year warranty, lifetime maintenance (consumables such as high-temperature sealing rings, furnace tubes, and heating elements are not covered)
Customization Fluidized bed version available upon request
Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

The tube quenching furnace is a vertical vacuum tube quenching furnace that utilizes molybdenum disilicide (MoSi2) heating elements and features a double-layer shell structure. It is equipped with an 80mm-diameter corundum tube and a liquid-sealed container for sample quenching.
This device allows samples to rapidly drop from high-temperature conditions (up to 1700°C) into an ice-water or oil bath within the liquid container during experiments, making it highly suitable for laboratory research on material phase transformations and microstructure properties.

Parameter Specification
Furnace Structure (1) Double-layer shell with air cooling system keeps surface temperature below 50°C.
(2) High-purity alumina fiber insulation throughout the furnace chamber.
(3) Includes one corundum tube and a stainless steel sealing flange (pre-installed with needle valve and mechanical pressure gauge).
(4) Sealed liquid container connected via a corundum tube (180mm limit) ensures contamination-free sample quenching.
Long-term Working Temp. 800-1600°C
Max. Working Temp. 1700°C
Heating/Cooling Rate Below 1200°C: 5°C/min; Above 1200°C: 10°C/min
Heating Zone Length 300 mm (customizable)
Heating Element U-shaped MoSi2 rods
Thermocouple Type B (PtRh-PtRh)
Chiller Cools flange ends to protect seals
Temperature Controller 1. PID control with 30-segment programming
2. Accuracy: ±1°C
3. Over-temp/thermocouple break protection (auto power cutoff)
4. Auto-tuning function
Furnace Tube Material: Corundum (OD: 80mm; ID: 70mm; Length: 1000mm)
Customizable. Tube plugs required before use to block thermal radiation.
Vacuum Flanges & Valves 1. Top: Stainless steel flange with hook, sample ejection port, and thermocouple interface
2. Bottom: Gate valve + mechanical pressure gauge
3. Bottom flange includes gas inlet
Quenching Container 1. Stainless steel liquid tank fixed below tube
2. Manual gate valve between tube and tank
3. Top flange: Hanging mechanism (max 1000g sample)
4. Push-release mechanism for sample quenching
5. Requires 5 PSI argon purge and open gate valve before release
Vacuum Pump Standard: Stainless steel vacuum flange with valves.
Vacuum range: 10 Pa (mechanical pump); 10<sup>-3</sup> Pa (molecular pump)
 Advanced Dual-Zone Vertical Tube Furnace for Precision Heating

he 1600°C small vertical high-temperature tube furnace is specifically developed by Kejia Electric Furnace for CVD experiments involving powder surface deposition. It features a furnace chamber crafted from high-purity alumina fiber, offering simple operation, high temperature control accuracy, excellent thermal insulation, uniform chamber temperature distribution, and the capability for atmosphere introduction and vacuum extraction.This vertical tube furnace is primarily used in university laboratories and industrial research facilities, catering to high-, medium-, and low-temperature CVD processes. Applications include the synthesis of carbon nanotubes, thin-film coating on crystalline silicon substrates, diffusion welding of metal materials, as well as heat treatment under vacuum or controlled atmospheres.

Parameter Specification
Furnace Tube Size 960×900mm (customizable according to customer requirements)
Heating Zone Length 300mm (customizable according to customer requirements)
Operating Temperature 1500°C (long-term heating temperature)
Maximum Temperature 1600°C
Temperature Control Intelligent 30-segment programmable control (optional LCD touch screen)
Temperature Accuracy ±1°C
Safety Protection Over-temperature and thermocouple break protection
Heating Rate Recommended 0~10°C/min
Heating Elements Silicon molybdenum rods
Chamber Material Polycrystalline ceramic fiber, dust-free, excellent insulation, high reflectivity, uniform temperature field, strong thermal shock resistance
Flange Connections Equipped with two stainless steel vacuum flanges, pre-installed with mechanical pressure gauge and stainless steel stop valve
Sealing System Silicone O-ring compression seal between furnace tube and flange, easy to disassemble and reusable, excellent airtightness
Vacuum Level Dual-stage rotary vane pump: 10² Torr
Molecular pump unit: 10 Torr
Tube Material Alumina tube
Airtightness 4.03×10³ Pa
Temperature Sensor Type B thermocouple
Advanced Dual-Zone Vertical Tube Furnace for Precision HeatingThe vertical tube atmosphere furnace features a unique design that enables rapid heating and cooling of samples under vacuum or protective atmospheres. With four-sided heating, it ensures a more uniform temperature field, while its vertical structure allows for smoother gas exhaust. The furnace is vertically mounted on a movable stand, facilitating easy loading and unloading of tubes while maintaining temperature uniformity.  

This furnace supports pre-vacuum pumping and can introduce various gases, including hydrogen, argon, nitrogen, oxygen, carbon monoxide, and ammonia-cracked gas. It offers advantages such as an even temperature distribution, low surface temperature, fast heating/cooling rates, and energy efficiency.  

Specifically designed for fluidized-bed CVD applications, it is ideal for experiments such as thin-film growth, electrode testing, oxide crystal growth, and rapid annealing. Widely used in university and industrial laboratories, it accommodates high-, medium-, and low-temperature CVD processes, including carbon nanotube synthesis, crystalline silicon substrate coating, metal diffusion welding, and heat treatment under vacuum or controlled atmospheres.
Parameter Specification
Furnace Tube Size 950×1000mm (custom sizes available upon request)
Heating Zone Length 440mm (customizable)
Operating Temperature 1100°C
Maximum Temperature 1200°C
Temperature Control Intelligent 30-segment programmable control (optional LCD touch screen)
Temperature Accuracy ±1°C
Safety Protection Over-temperature and thermocouple break protection
Heating Rate 0~10°C/min
Heating Elements Resistance wire
Chamber Material Polycrystalline ceramic fiber - dust-free, excellent insulation, high reflectivity, uniform temperature field, strong thermal shock resistance
Flange Connections Standard with two stainless steel vacuum flanges, pre-installed with mechanical pressure gauge and stainless steel stop valve
Sealing System Silicone O-ring compression seal between tube and flange - easy disassembly, reusable, excellent airtightness (maintains pressure gauge stability for 12 hours)
Vacuum Level Dual-stage rotary vane pump: 10² Torr
Molecular pump unit: 10 Torr
Gas Supply System Equipped with float flow meter; customers can control gas flow rate using float or mass flow meter
Tube Material Fused quartz tube
Airtightness 4.03×10³ Pa
Temperature Sensor Type N thermocouple

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