Split Tube Furnace
2.Lab Box Furnace Equipment:1L-36L
3.Working Temperature can reach 1200℃-1700℃
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Description
Technical Parameters
Split tube furnace, is an advanced heating equipment widely used in multiple high-tech fields such as materials science, chemical engineering, and semiconductor manufacturing. Its unique and clever design allows the furnace tube to split into two parts along its length, which greatly facilitates the replacement process of working tubes or samples. At the same time, it also supports the use of tubes and reactors of various sizes and specifications, thus meeting the needs of different experiments and processes.
This type of furnace not only has a unique structure, but also has powerful functions, and is usually used for a series of complex and delicate processes such as vapor deposition, heat treatment, oxidation diffusion, etc. in high-temperature environments. During the high-temperature vapor deposition process, it can provide a stable and controllable high-temperature environment to ensure the smooth progress of the deposition process; During the heat treatment process, it can precisely control the temperature and time to achieve the expected material modification effect; During the process of oxidation diffusion, it can provide the necessary oxidation atmosphere and temperature conditions to promote the oxidation and diffusion reactions of the material.
Parameters
Structural composition
In terms of structural composition, split tube furnace is a precise and powerful heating device, with core components including furnace body, heating element, temperature controller, working tube, and a series of accessories, each of which plays an indispensable role.
Furnace body: The main structure is usually carefully crafted from high-quality vacuum formed insulation materials. This material not only has excellent high temperature resistance, but also has excellent insulation and thermal insulation effects, which can effectively reduce heat loss and improve the heating efficiency of the furnace. The interior of the furnace is ingeniously embedded with free radiating heating wire elements, which are evenly distributed on the inner wall of the furnace, ensuring that heat can be evenly and quickly transferred to the working tube and its internal samples or reactors. The furnace body is divided into two parts along its length and connected by sturdy and durable hinges. This design allows the furnace body to be easily opened and closed, greatly facilitating the replacement of working tubes and the loading and unloading of samples.
Heating element: a key component, usually made of high-quality resistance wire, such as Fe Cr Al alloy doped with Mo, etc. These resistance wires have good conductivity and high temperature resistance, and can work stably at high current densities, generating sufficient heat to meet experimental requirements. The heating element converts electrical energy into thermal energy through current heating, thereby achieving precise control of the temperature inside the furnace.
Temperature controller: It is responsible for monitoring and regulating the temperature inside the furnace. The temperature controller usually adopts advanced PID control technology, which can automatically adjust the power of the heating element according to the set temperature curve and experimental requirements, thereby ensuring the stability and accuracy of the temperature inside the furnace. At the same time, the temperature controller is also equipped with high-precision thermocouples and temperature sensors, which can monitor the temperature changes inside the furnace in real time and feedback the data to the controller for precise adjustment.
Work tube: a component used to place samples or reactors, typically made of high temperature and corrosion-resistant materials such as quartz, ceramics, or stainless steel. The size and shape of the work tube can be customized according to experimental requirements to accommodate samples or reactors of different sizes and shapes. During the work process, the work tube can protect the sample or reactor from external environmental interference, while ensuring that heat can be evenly and quickly transferred to the sample or reactor.
Attachments: such as gas control system, vacuum pump, sample holder, etc. These attachments can further expand the functionality and application scope of the furnace, meeting more diverse experimental needs. For example, gas control systems can accurately control the composition and flow rate of the furnace atmosphere, thereby achieving heating treatment of samples or reactors under specific atmospheres; A vacuum pump can remove air and impurities from the furnace, providing a clean and oxygen free environment for experiments; The sample holder can conveniently fix and support the sample or reactor, ensuring its stability and safety during the heating process.
In summary, the structural composition of product not only reflects its precise and complex design, but also demonstrates its powerful functionality and wide range of applications. These components collaborate and work together, making product an indispensable heating device in fields such as materials science, chemical engineering, and semiconductor manufacturing.
Main Features
Flexibility
By using tube adapters, the same furnace can be used with tubes of different diameters to meet various experimental needs.
01
Easy to replace work tubes
The split design makes it easier to replace work tubes and supports the use of reactors or work tubes with end flanges, which may be difficult to insert in non split furnaces.
02
Protecting heating elements
Using a separate working tube can protect the heating elements from damage or contamination, extending the service life of the furnace.
03
Temperature uniformity
For a furnace with three zone heating, excellent temperature uniformity can be achieved by dividing the heating length into three zones, each with its own controller and thermocouple.
04
Fast heating and cooling
High quality insulation materials and design ensure fast heating and short cooling time of the furnace, improving experimental efficiency.
05
Performance parameters and selection
Maximum operating temperature
The maximum operating temperature of different types of furnaces varies, generally between 1000 ℃ and 1400 ℃. The selection needs to be determined based on the experimental requirements.
01
Heating zone and length
The number and length of heating zones determine the temperature uniformity and processing capacity of the furnace. A furnace with three zone heating usually has better temperature uniformity.
02
Temperature controller
The accuracy and programmability of the temperature controller are crucial for the success of the experiment. The PID automatic control and adjustment functions, as well as multi-stage programmability, can improve the accuracy and flexibility of experiments.
03
Work tube size:
The diameter and length of the work tube determine the size of the sample or reactor that can be processed. The selection needs to be determined based on the experimental requirements.
04
Insulation materials and heating elements:
High quality insulation materials and heating elements can ensure rapid heating and short cooling time of the furnace, improving experimental efficiency.
05
Case analysis
A split tube furnace plays a crucial role in the preparation of graphene, a material known for its exceptional mechanical, electrical, and thermal properties. This specialized piece of equipment is designed to provide a controlled environment for high-temperature processes, making it ideal for graphene synthesis methods that require precise temperature control and an inert atmosphere.
Temperature Control
They are capable of reaching and maintaining high temperatures, often up to 1200°C or more, which is essential for graphene growth processes such as Chemical Vapor Deposition (CVD). These furnaces typically feature advanced temperature controllers that allow for precise heating and cooling profiles, ensuring uniform temperature distribution throughout the furnace chamber.
Inert Atmosphere
Graphene synthesis often requires an inert atmosphere to prevent oxidation and contamination. They can be equipped with gas inlets and outlets to facilitate the flow of inert gases like nitrogen or argon, creating a protective environment for the graphene growth process.
Modularity and Flexibility
The split design of the furnace allows for easy access to the furnace chamber, making it convenient for loading and unloading substrates. This feature is particularly useful in graphene synthesis, where substrates may need to be introduced or removed at specific stages of the process.
CVD Graphene Growth
One of the most common methods for synthesizing high-quality graphene is CVD. In this process, a carbon-containing precursor gas is introduced into the furnace chamber at high temperatures. The gas decomposes on a catalytic substrate, such as copper or nickel, resulting in the growth of graphene layers. The furnace provides the necessary high-temperature environment and inert atmosphere to facilitate this process.
Uniform Heating
The precise temperature control and uniform heating provided by a furnace are critical for achieving consistent graphene growth across the substrate. This ensures that the resulting graphene films have uniform properties, which is essential for their application in electronic devices and other advanced technologies.
Scalability
They are available in various sizes, allowing for the scalable production of graphene. From small-scale research experiments to large-scale production runs, these furnaces can be adapted to meet the specific needs of different graphene synthesis processes.
Experimental objective: To prepare high-quality graphene on copper substrate by CVD vapor deposition method.
Experimental materials: Copper sheet (as substrate), methane gas (as carbon source), hydrogen gas (as reducing agent), and argon gas (as protective gas).
Clean the copper sheet thoroughly and place it inside the working tube.
Install the work tube into the furnace and connect the gas pipeline and thermocouple.
Set temperature program and gas flow rate parameters.
Start the furnace for heating, while introducing methane, hydrogen, and argon for vapor deposition process.
After reaching the set temperature and time, turn off the furnace and stop ventilation. Take out the sample for subsequent processing and characterization.
High quality graphene was successfully grown on the copper substrate through characterization methods such as SEM and Raman spectroscopy. The morphology and properties of graphene meet the expected requirements.
Split Design: The furnace body is hinged and split into two halves along its length. This unique design allows for easy insertion and removal of work tubes or reactors, even those with end flanges that would be difficult to accommodate in a non-split furnace. This feature simplifies the exchange of work tubes and enables the use of reactors or work tubes of various diameters.
Temperature Control: Split tube furnaces typically offer precise temperature control, often with PID controllers that allow for accurate and stable temperature settings. They can reach high temperatures, with some models capable of reaching up to 1200°C or even higher, depending on the specific model and application.
Heating Zones: These furnaces can have single or multiple heating zones. Multi-zone models, like the HZS series, provide excellent temperature uniformity by dividing the heated length into separate zones, each with its own controller and thermocouple. This ensures that the entire length of the work tube is maintained at the desired temperature, which is critical for processes like chemical vapor deposition (CVD) and material annealing.
Material Flexibility: They can be used with a wide range of tube materials, including quartz, ceramic, and metal, depending on the application requirements. This versatility allows researchers and engineers to choose the most suitable material for their specific needs.
Atmosphere Control: Many split tube furnaces are designed to operate under controlled atmospheres, such as inert gases (e.g., nitrogen, argon) or vacuum conditions. This is particularly important for processes that are sensitive to air or moisture, such as OLED and PLED fabrication.
Safety Features: These furnaces often include safety features like over-temperature protection and emergency shut-off systems to ensure safe operation and prevent damage to the equipment and samples.
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