Vertical Furnace
What is Vertical Furnace
Vertical furnaces are specialized heating devices used in various scientific and industrial applications. They are particularly important where precise temperature control and uniform heating are essential.These furnaces have a vertically oriented heating chamber. This design allows for efficient heat transfer and uniform temperature distribution along the length of the sample being processed.This design is particularly advantageous for applications in materials research, chemistry, nanotechnology, and semiconductor manufacturing.
Why Choose Us
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Rich experience
The company has 26 years of experience in the production of heat treatment equipment, and has strict requirements for the control of raw materials. Each equipment will undergo quality inspection before leaving the factory. Each product provides a one-year warranty and a half-year warranty for heating elements. We provide lifelong service to all customers.
Professional team
The company is located in Hangzhou (Binjiang) High-tech Development Zone, and has a product design and development department and a production department in Heping Kiln, Qiutao North Road. The company focuses on the practical performance of the products, and technical personnel account for more than 60%.
Customized services
Our company provides personalized customization services and customizes products according to your experimental requirements.
After-sales service
Quality assurance: Each device provides a one-year warranty service, and the heating element provides a six-month warranty service. If there is any problem during the warranty period, free repair or replacement service is provided.Technical support: Provide 24/7 multilingual technical support services. Customers can contact the technical team by phone, email or instant messaging tools to solve any problems encountered during use.
Product Categories
Benefits of Vertical Furnace
Efficient and energy-saving
Full combustion: The tube furnace adopts advanced combustion technology to make fuel combustion more complete and significantly improve thermal efficiency.Rapid heating: The materials in the furnace are heated evenly, the heating speed is fast, and the heating time is shortened, thereby reducing energy consumption.Insulation effect: The furnace adopts high-quality insulation materials, such as alumina polycrystalline fibers, which have good insulation effect and further reduce the loss of heat energy.
Precise temperature control
Advanced Control System: Equipped with an advanced temperature control system, it can achieve precise control of the temperature inside the furnace. Users can set parameters such as heating temperature, heating rate, and holding time according to experimental or production needs.PID temperature control: Precision temperature control instruments are used for PID temperature control, automatically adjusting the heating power to maintain the stability and uniformity of the temperature inside the furnace.
Flexible and diverse
Multiple atmospheric environments: capable of pre vacuuming and introducing various protective gases (such as hydrogen, argon, nitrogen, etc.), providing a more flexible and safe operating environment for experiments and production.Customizability: Customized according to user needs, such as heating temperature zone (single or multiple temperature zones), furnace tube material, diameter and length, etc., to meet the needs of different experimental or production conditions.
Easy to operate
Concise operation interface: The operation interface is concise and clear, and users only need to control the control panel or remote control system to achieve device start, stop, temperature adjustment and other operations.Automated control: Adopting an automated control system to simplify the operation process and improve work efficiency.
Safe and reliable
Multiple protection: equipped with overheating and disconnection protection functions, ensuring that the equipment can automatically cut off the power supply in case of abnormal situations, ensuring operational safety.High quality materials: The furnace tube is made of high-quality materials such as quartz, ceramics, or metals, which have excellent properties such as high temperature resistance and corrosion resistance, ensuring the long-term stable operation of the equipment.
Environmental compliance standards
Waste gas treatment: The waste gas generated during the combustion process of a tube furnace is professionally treated to meet national environmental standards and meet the requirements of modern industry for green production.
Types of Vertical Furnace
Vertical Vacuum Tube Furnace - This type includes a convection chamber, radiation chamber, and chimney, with advanced features like heat recovery systems and air-fuel ratio control.
Vertical Split Tube Furnace - Designed for high-temperature applications, this furnace has a cylindrical chamber divided into two halves for easy sample handling.
Application of Vertical Furnace
Materials Science Research
In the field of materials science,vertical Furnace are used for material synthesis, modification, performance testing, and other aspects. By precisely controlling the heating temperature and time, new materials with specific properties can be prepared, such as high-temperature superconducting materials, nanomaterials, etc.
Metallurgy and Heat Treatment
In the fields of metallurgy and heat treatment, vertical Furnace are used for processes such as metal melting, casting, and heat treatment. By precisely controlling the heating temperature and atmosphere environment, the microstructure and properties of metal materials can be improved, and their strength, hardness, and wear resistance can be enhanced.
Chemical and Pharmaceutical Industry
In the fields of chemical and pharmaceutical industries,vertical Furnace are used for heating and catalytic processes in chemical reactions. By precisely controlling the heating temperature and reaction time, the rate and efficiency of chemical reactions can be improved while ensuring the quality and purity of the product.
New energy and environmental protection
In the fields of new energy and environmental protection, vertical Furnace are used to prepare new energy materials such as solar cells and lithium-ion batteries, as well as to treat waste and pollutants. By precisely controlling the heating temperature and atmosphere environment, green preparation of materials and harmless treatment of waste can be achieved.
Biomedical Sciences
In the biomedical field, vertical Furnace are used for the preparation and modification of biomaterials, as well as the processing and analysis of biological samples. By precisely controlling the heating temperature and time, materials with specific biological activity can be prepared while ensuring the integrity and accuracy of biological samples.
Electronics and Semiconductors
In the fields of electronics and semiconductors, vertical Furnace are used for processes such as doping and annealing of semiconductor materials. By precisely controlling the heating temperature and atmosphere environment, the electrical properties and stability of semiconductor materials can be improved, and the performance and reliability of their devices can be enhanced.
Vertical Furnace Components
Shell
The outer shell of a tube furnace is typically made from stainless steel or aluminum alloy.these materials are chosen for their durability and resistance to corrosion.the shell provides a protective barrier around the inner components, safeguarding them from external environmental factors.
Insulation layer
Located inside the shell, the insulation layer is a critical component that helps retain heat within the furnace.this layer is designed to reduce energy loss, thereby increasing the efficiency of the furnace.materials used for insulation are typically high-temperature resistant and can include various types of ceramics or refractory materials.
Heating device
The heating device is the core of the vertical furnace, responsible for generating the high temperatures required for various processes.common heating elements include resistance wires, silicon carbon rods, and silicon molybdenum rods.these elements are strategically placed around the cylindrical chamber to ensure uniform heat distribution.
Control system
The control system in a vertical furnace is essential for managing and monitoring the operation of the furnace.it includes components such as thermocouples, controllers, and power regulators.this system is used to adjust the heating power, monitor temperature, and control other parameters such as atmosphere within the furnace.advanced control systems also allow for remote monitoring and operation, enhancing the ease and precision of use.
How to Choose Vertical Furnace
Temperature
It is generally recommended to choose a furnace with a maximum temperature that is at least 100-200 degrees Celsius higher than the temperature you will be working at. This is because the furnace will be able to maintain a stable temperature and will not need to work as hard to reach and maintain the desired temperature.
Size and volume
It is important to choose a furnace that is the right size for your needs. If the furnace is too small, it may not be able to accommodate the materials or processes you need to perform. On the other hand, if the furnace is too large, it may be more expensive and may not be cost-effective for your needs.
Heating Elements
It is important to choose the right heating elements for your furnace based on the temperature you will be working at. Spiral heating elements are suitable for temperatures up to 1200 degrees Celsius, while silicone carbide rods are suitable for temperatures up to 1600 degrees Celsius. Molybdenum dicilicide heating elements are suitable for temperatures up to 1800 degrees Celsius.
Protection method of heating element
In ashing processes, where materials that may damage the heating elements (such as organic materials, plastic materials, sludge, etc.) are present, it is important to choose a furnace with concealed heating elements to protect them.Concealed heating elements are protected by an enclosure, such as a ceramic tube, which helps to prevent damage and prolong the life of the heating elements. Visible heating elements, on the other hand, are not protected and are more prone to damage in harsh environments.
Atmosphere
When working in an atmosphere of gases, it is important to consider the type of material the retort (enclosure) is made of and whether it is suitable for the conditions of the process. Inconel is a type of corrosion-resistant alloy that can withstand high temperatures and is often used in furnace retorts for working in inert atmospheres. It is important to ensure that the retort is properly sealed to prevent gases from escaping and to protect the heating elements from damage.
How does a Vertical Furnace Handle Powder Materials?
Preprocessing stage
Due to the possibility of moisture content in powder materials, it can affect their processing efficiency in tube furnaces, so drying treatment is necessary first.The powder can be placed in a drying oven and dried at an appropriate temperature and time. The drying temperature and time need to be adjusted according to the specific material and moisture content of the powder.Another method is to use a freeze dryer, which can effectively remove moisture while maintaining the integrity and activity of the sample, but the operation is difficult and requires attention to the freezing speed, vacuum degree, and temperature of the sample.
Loading and Placement
It is necessary to choose sample containers suitable for tube furnaces, such as ceramic boats, quartz tubes, etc. The container should have good high temperature resistance and not affect the processing effect of powder materials.The size and shape of the container should be selected based on the amount of powder material and the specifications of the tube furnace.Load the preprocessed powder into a container and ensure even distribution of the powder.If necessary, a thin layer of refractory material can be laid at the bottom of the container to prevent direct contact between the powder and the furnace.
Operation and Control
Set the heating program for the tube furnace according to experimental or production requirements. This includes parameters such as heating rate, target temperature, and holding time.A segmented heating method can be used to better control temperature changes and the processing effect of powder materials.During the processing, it is necessary to maintain a certain protective atmosphere inside the tube furnace (such as inert gases such as nitrogen and argon) to prevent powder materials from being oxidized or reacting with impurities in the atmosphere.
Subsequent processing
After processing, the tube furnace needs to be allowed to cool naturally to room temperature before sampling. This can prevent sample breakage or deformation caused by rapid cooling.Attention should be paid to safety during sampling to avoid burns or inhalation of harmful substances.Regularly clean and maintain the tube furnace to ensure its normal operation and extend its service life.When cleaning, it is important to use appropriate cleaning agents and tools to avoid damage to the furnace and pipelines.
How to Maintain Vertical Furnace
Regularly inspecting
It is important to regularly check the temperature control system of the furnace. This may include testing the thermocouple to ensure that it is functioning correctly and calibrating the temperature control system to ensure that it is accurately regulating the temperature of the furnace.It is also important to check the condition of the heating elements and replace any that are damaged or worn. The heating elements are an essential component of the furnace and are responsible for generating the heat needed to heat the materials being processed. If they are damaged or not functioning properly, it can significantly impact the efficiency and effectiveness of the furnace.
Drying
It is important to perform proper maintenance on your vertical tubular electric furnace before using it after a long period of inactivity. This includes "oven drying" the furnace, which involves heating it to a high temperature for a period of time to remove any moisture or other contaminants that may have accumulated inside. This is particularly important if the furnace has been exposed to high humidity or other damp conditions.
Amount of water added
It is important to follow the manufacturer's recommendations for adding water to the tubular electric furnace. Adding too much water can negatively impact the strength and high-temperature performance of the materials being processed, and may cause problems during operation.On the other hand, adding too little water can also cause problems. Water is used in the furnace to cool the heating elements and control the temperature of the furnace. If there is not enough water, the heating elements may overheat and be damaged, leading to equipment failure and costly repairs.
Regular cleaning
Regular cleaning of the furnace is an important part of its maintenance. Dust and debris can accumulate inside the furnace over time, and if not removed, can impact the efficiency of the furnace and even lead to equipment failure.To clean the furnace, it is important to first turn it off and allow it to cool down to a safe temperature. Then, use a soft cloth or brush to gently remove any dust or debris from the interior of the furnace. Be sure to pay particular attention to the heating elements, as these are particularly sensitive to dust and debris.
Our Factory
Hangzhou Lantian Instrument Co., Ltd. was established in 1996. In 2001, the company acquired Hangzhou Lantian Laboratory Instrument Factory, which has a technical history of more than 10 years in the production of experimental electric furnaces and constant temperature ovens. Professional research and development and production: laboratory high-temperature resistance furnaces, atmosphere protection experimental furnaces, vacuum experimental furnaces, drying ovens, high-temperature ovens, environmental test chambers, etc. The products are mainly used in colleges and universities, scientific research institutions, industrial and mining enterprises, and are used for testing, firing, ashing, and analysis of various materials under different environments. Our products have entered 95% of domestic colleges and universities, and have achieved 100% coverage in the top 20 colleges and universities in the country.
FAQ
We're professional vertical furnace manufacturers in China, specialized in providing high quality ODM service. We warmly welcome you to buy reliable vertical furnace for sale here from our factory. For price consultation, contact us.
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