Muffle Furnace
Why Choose Us?
Reliable Product Quality
Xinkyo Company was founded in 2005 by professional materials researchers. Its founder studied at Peking University and is a leading manufacturer of high-temperature experimental equipment and new materials research laboratory equipment. This enables us to provide high-quality, low-cost high-temperature equipment for materials research and development laboratories.
Advanced Equipment
Main production equipment: CNC punching machines, CNC bending machines, CNC engraving machines, high-temperature oven CNC lathes, lying machines, gantry milling, machining centers, sheet metal, laser cutting machines, CNC punching machines, bending machines, self capacitive welding machines, argon arc welding machines, laser welding, sandblasting machines, automatic paint baking rooms.
Wide Range of Applications
The products are mainly used in ceramics, powder metallurgy, 3D printing, new material research and development, crystal materials, metal heat treatment, glass, negative electrode materials for new energy lithium batteries, magnetic materials, etc.
Wide Market
XinKyo Furnace's annual export sales revenue is more than 50 million, with North American markets (such as the United States, Canada, Mexico, etc.) accounting for 30% and European markets (such as France, Spain, Germany,etc) accounting for about 20%; 15% in Southeast Asia (Japan, Korea, Thailand, Malaysia, Singapore, India, etc) and 10% in the Russian market; 10% in the Middle East (Saudi Arabia, UAE, ect ), 5% in the Australian market, and the remaining 10%.
What is Muffle Furnace?
A muffle furnace is a laboratory instrument used to heat materials to extremely high temperatures whilst isolating them from fuel and the byproducts of combustion from the heat source. Muffle furnaces allow for the isolation of a material to reduce the risks of cross-contamination and identify specific properties. Muffle furnace allows rapid high-temperature heating, recovery, and cooling in self-contained, energy-efficient cabinets. Muffle furnace separates the object to be heated from all byproducts of combustion from the heat source. In modern electrical furnaces, radiation or convection energy applies heat to a chamber using a high-temperature heating coil inside insulated material. The insulating material effectively acts as a muffle, preventing heat from escaping.
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![High Temperature Muffle Furnace]()
High Temperature Muffle Furnace1800℃ High temperature muffle furnace is the highest design temperature of the box-type furnace type, which can meet the multi-process needs of customers. The temperature control accuracy is ±1°C....read more -
![Xinkyo 125L 1200℃ Lifting Door Muffle Furnace]()
Xinkyo 125L 1200℃ Lifting Door Muffle Furnace1.1200℃design,continuous using 1100℃read more
2.Lifting door,space saving
3.PID control and 30segments temperature-time programmable
4.1430℃ Alumina ceramic fiber refractory... -
![High Temperature Muffle Furnace]()
High Temperature Muffle Furnace1.1400℃ design,~1300℃ working temperature（suggested）read more
2.Desktop placement,more options
3.PID and auto-tuning function,30segments temperature time programs programmable
4.Inner size... -
![1000℃ Electric Muffle Furnace]()
1000℃ Electric Muffle Furnace1000℃ Electric Muffle Furnaceread more
Furnace model:SX2-3-12TP
Chamber size:300*200*120mm
High qulaity heating element Resistance wire -
![High Temperature Laboratory Furnace]()
High Temperature Laboratory FurnaceHigh temperature laboratory furnaceread more
Ma.design temperature:RT-1700℃
200*150*150mm inner chamber size
High qulaity si2 heating element -
![Closed Chamber Muffle Furnace]()
Closed Chamber Muffle FurnaceChamber closed muffle furnace;read more
Different chamber size optional;
PID auotmatic control;
Side opening easy operating; -
![1700C Heating Oven]()
1700C Heating Oven1.Max temperature 1700Cread more
2. Customization support
3. 30~50C segments temperature time programs, PID and self-tuning functions
4. Accuracy ±1℃
5. CE and ISO9OO1 certified -
![1800C Muffle Furnace]()
1800C Muffle Furnace1. Maximum temperature 1800Cread more
2. 400*300*300mm (36L) internal dimensions
3. Intelligent temperature controller, PID control, 30-stage temperature and time program
4. Alumina ceramic... -
![500L Annealing Furnace]()
500L Annealing Furnace1. Inner dimensions 50*100*100cm(D*W*H)read more
2. HRE resistance wire heating, maximum 1200C
3. 1430C grade alumina ceramic fiber chamber
4. PID control, accuracy ±1C, 10X50 segments... -
![1200C Muffle Furnace]()
1200C Muffle Furnace1200C muffle furnace heating by Resistance wireread more
Continuous working temperature 1100C
PID controlled lab furnace -
![1000C Muffle Furnace]()
1000C Muffle Furnace1. Hidden heating element to avoid corrosionread more
2. Latest alumina ceramic fiber refractory material
3. 300*200*200mm inner size
4. Maximum operating temperature 1000C
5. PID... -
![Big Sintering Muffle Furnace]()
Big Sintering Muffle FurnaceIndustrial muffle furnaceread more
Big chamber size can be customized
PID controlled lab furnace
Advantages of Muffle Furnace
Speed
One of the main advantages of muffle furnaces is their speed. These lab microwaves are capable of heating materials much faster than traditional furnaces that use resistance heating or convection. This is because microwave energy is directly absorbed by the material being heated, resulting in rapid and efficient heating. In some cases, muffle furnaces can heat materials ten times faster than traditional furnaces, making them an ideal choice for applications where speed is a priority.
Even Heating
Another advantage of muffle furnaces is their ability to heat materials evenly. Traditional furnaces often rely on convection to heat materials, which can result in uneven heating and the formation of hot and cold spots. muffle furnaces, on the other hand, use microwave energy to directly heat the material, resulting in more even heating. This is especially important for applications where uniform heating is crucial, such as in the production of high-quality ceramics, testing of materials for mechanical properties or microwave for material science.
Cost & Energy Efficient
These furnaces are highly energy efficient, making them a cost-effective choice for many applications. They also have a small footprint, making them a good choice for laboratories with limited space. Conventional furnaces entail high chances of material and energy loss along with safety risks. Additionally, muffle furnaces are relatively easy to operate and maintain, making them a convenient choice for researchers and industrial professionals.
Versatile
Muffle furnaces are also highly versatile, and can be used for a wide range of applications. These furnaces are often used in research laboratories to study the properties of materials at high temperatures, as well as in industrial settings to manufacture a variety of products.
Types of Muffle Furnace
Electric Muffle Furnace
Electric muffle furnaces are a type of valuable electric furnace for moulding, melting, drying, and heating materials. They are similar to an induction furnace, but they use electrically heated refractory elements in a solid metal container instead of producing electromagnetic fields that heat the material placed inside. They can run at higher temperatures than induction furnaces and greater power densities.
Nabertherm Muffle Furnace
A Nabertherm muffle furnace is an application-oriented heating system for industrial use. These furnaces are helpful in various industries, from steel and other metal production to glass manufacturing, ceramics and food processing, car manufacturing, and aerospace.
Thermolyne Muffle Furnace
A Thermolyne muffle furnace is a specific type of industrial benchtop muffle furnace that reaches a maximum temperature of 1200°C. The high temperature provides the ability to get a variety of temperatures for different applications where the user will use it in an industrial setting. They are helpful for heating, annealing, and tempering glassware or crucibles.
Carbolite Muffle Furnace
Carbolite muffle furnaces are useful in heating materials to high temperatures. They have an insulated chamber with fuel burners at the bottom and a heat-resistant door at the top. These are available from 30 to 3000 C.
Laboratory Muffle Furnace
Laboratory muffle furnaces are helpful for heating tasks, such as binder burnout, sintering, and melting. They use radiant heat transfer to heat items placed inside the furnace chamber. These are commonly useful in creating specific temperature conditions to perform scientific experiments or manufacture items in a controlled manner. The heat is distributed evenly through metal baffles between the heating elements.
Glass Industry
Glass manufacturing industries several tasks are performed that require high temperature to determine the properties of the raw material to produce a high-quality product. These tasks include melting glass at the time of recycling, blow molding of glass to make the different shape of products and much more. To attain such type of temperatures easily, several electrical furnaces have also been introduced. Additionally, these are also used to make the glass stronger and better by bending them. The temperature which is required for making the glass products though is 700 to 900 degree Celsius. This helps to make the glass products tough, and this temperature can be achieved easily using Muffle Furnaces.
Pharmaceutical Industry
In the pharmaceutical industry, muffle furnaces play a crucial role in the production of drugs and pharmaceutical products. These furnaces are used for processes such as drying, sterilization, and calcination of pharmaceutical compounds. Muffle furnaces provide a controlled and uniform heating environment, ensuring the purity and quality of pharmaceutical materials.
Metal Industries
Muffle furnaces are extensively used in the metal industry for heat treatment and annealing processes. They provide precise temperature control and uniform heating, making them ideal for applications such as metal hardening, tempering, and sintering. Muffle furnaces help enhance the mechanical properties and durability of metal components.
Battery Manufacturing /Research Industry
In the battery manufacturing and research industry, muffle furnaces are employed for various purposes. They are utilized for the preparation and testing of battery materials, such as electrode materials and electrolytes. Muffle furnaces provide controlled heating conditions necessary for the synthesis, drying, and thermal stability testing of battery components.
Semiconductor industry
Muffle furnaces find critical applications in the semiconductor industry, particularly in the production of electronic components. They are used for processes such as oxidation, diffusion, and annealing of semiconductor materials. Muffle furnaces ensure precise temperature control and uniform heat distribution, resulting in reliable and high-performance semiconductor devices.
Petrochemical Industry
In the petrochemical industry, muffle furnaces are employed for catalyst preparation, catalyst activation, and other thermal treatment processes. These furnaces offer controlled heating environments that are essential for the activation and regeneration of catalysts used in various petrochemical reactions. Muffle furnaces contribute to optimizing reaction efficiency and ensuring consistent product quality.
Structure & Design of Muffle Furnace
Heating Element
Silicon carbide(SIC) heating Element used in 1450-degree Muffle furnace, molybdenum Disilicide (MoSi2) U shape rod used for 1800-degree Muffle furnace & Kanthal A1 Spring type heaters used for 1100-degree Muffle furnace.
Temperature Control
Microprocessor-based profile PID controller gives accurate and programmable temperature settings with SV and PV display. PLC with HMI can be used for data logging with a temperature-controlling system. The programmable controller displays the RAMP rate and soaking time together for better understanding.
RAMP RATE
What is the Ramp rate in terms of furnace heating? The ramp Rate is the Change of temperature per unit of time. Like an 1100 degrees celsius furnace, we offer 1 to 25 Degrees per Minute. Our furnace can achieve 700 to 800 °C with a Ramp rate of 20 to 25°C per minute and above 800°C it operates at a rate of 5 to 15°C per minute.
Chamber construction
Muffle furnace has triple-walled construction and is equipped with zirconia fiberboard cemented from all sides for long life. Chamber construction plays an important role in the working of a furnace by keeping it cool from the outside for the safety of the user.
Temperature Range
Room temperature to 900°C, 1100°C, 1450°C, 1700°C, 1800°C. Choosing a furnace according to your requirement depends on the temperature range. All furnaces are designed with different working temperatures and maximum temperature ranges.
Voltage
To work on 220/230 V A.C. supply., big size comes in three phases 440 V, A.C.
Doors
Muffle furnaces are equipped with insulated doors with board insulation. There is no heating on the door due to good quality insulation.
Important Information in Purchasing a Muffle Furnace
Chamber size
The size of the furnace's chamber is another important factor to consider. The chamber size will dictate the maximum size of the samples that can be processed. Choose a furnace with a chamber that can accommodate the largest sample you need to process.
Your Uses
The most important factor is the specific application for which the furnace will be used. Depending on the process and industry, retort-based, box-type, or shell-type designs might be more applicable. Research that requires a wide temperature range might necessitate a box-type or shell-type muffle furnace. Be sure to consult an experienced furnace supplier to determine the best type for your needs.
Temperature range
Muffle furnaces have maximum temperatures ranging from below 1,000 degrees Celsius (1,832 degrees Fahrenheit) to above 2,000 degrees Celsius (3,632 degrees Fahrenheit). Choose a furnace with a temperature range that exceeds your application's required temperature. It's always better to have more temperature capability than you need, as this gives you flexibility for future applications.
Machine safety
Choose a furnace with safety features that exceed the minimum requirements for your application. These features might include automatic shut-off, over-temperature protection, and forced cooling. Look for models with self-diagnostic functions that make it easy to identify and correct problems. This function will ensure mechanical stability like sensor errors, door opening, heater disconnection, Triac short circuits, and over-temperature. However, not all models have self-diagnostics.
Samples
The number of samples you can process at once is an important factor to consider. Smaller furnaces might be limited to processing just a few samples at a time, while larger furnaces might be able to accommodate dozens or even hundreds of samples. Choose a furnace that can accommodate the number of samples you need to process. For example, a shell-type furnace with a rotating carousel might be the best option if you need to process large samples. Ensure the furnace can accommodate the subject material or samples you are about to work with.
Crucible size
The size of the crucible is another important factor to consider. The crucible is the container in which the sample is placed during processing. Make sure the furnace you choose can accommodate the size and shape of the crucibles you need to use.
Customization
Some Laboratory furnaces can be customized to meet the specific needs of your application. Choose a furnace that can be configured to meet your exact specifications, like- an external communication adapter, exhaust system, sample tray, alarm output terminal, etc.
Working Principle of Muffle Furnace
Muffle furnaces typically have one or more heating elements, which can be electric resistance heating elements or gas burners, depending on the specific furnace design. Electric muffle furnaces are more common in laboratory settings.
Inside the furnace, there is a heating chamber known as the “muffle.” This chamber is usually made of refractory materials like ceramic, quartz, or other high-temperature-resistant materials. The muffle chamber is where the sample or material to be heated is placed.
Muffle furnaces are equipped with temperature control systems that allow users to set and regulate the desired temperature. The temperature control system uses sensors to monitor the temperature inside the muffle chamber and adjusts the heating elements’ power accordingly to maintain the set temperature.
The furnace is well-insulated to minimize heat loss and maintain a uniform and stable temperature inside the muffle chamber. This insulation helps prevent external temperature fluctuations from affecting the heating process.
The material or sample that needs to be heated is placed inside the muffle chamber. The sample is positioned in a way that it does not come into direct contact with the heating elements. Instead, it is surrounded by the refractory material of the muffle chamber, which acts as a protective barrier.
When the muffle furnace is turned on and the desired temperature is set, the heating elements start to generate heat. This heat is radiated into the muffle chamber, gradually raising the temperature inside. The refractory material of the muffle chamber prevents direct contact between the sample and the heating elements, ensuring that the sample is heated uniformly and without contamination from combustion gases or ash.
Throughout the heating process, temperature sensors continuously monitor the temperature inside the muffle chamber. The control system adjusts the heating element’s power based on the feedback from these sensors to maintain the set temperature accurately.
Precautions for Using of Muffle Furnace
● The muffle furnace must be placed on a stable cement platform, equipped with plugs, sockets, and fuses with appropriate power, and grounded to avoid danger.
● The working environment is required to be free of flammable substrates and free of explosive substances and corrosive gases. It is forbidden to bake liquid samples such as water and oil, and it is forbidden to directly pour various liquids and molten metals into the furnace, so as to keep the furnace clean.
● When in use, the furnace chamber temperature shall not exceed the maximum furnace temperature, nor shall it work for a long time under the rated temperature. During the test, the user shall not leave and pay attention to the temperature change at any time. In case of any abnormality, the power shall be cut off immediately and the professional maintenance personnel shall repair it.
● When using, the furnace door should be closed gently to prevent damage to the machine parts. The crucible clamp should be handled with care when taking samples to ensure safety and avoid damage to the furnace chamber.
● Do not open the furnace door when the temperature exceeds 600°C. Open the furnace door after the temperature in the furnace cooling naturally.
● After the experiment, the sample shall be removed from heating and the power supply should be turned off. When placing the sample in the lab muffle furnace, the furnace door shall be slightly opened, and the sample shall be carefully clamped after the sample is slightly cooled to prevent scalding.
● When the muffle furnace is not in use, cut off the power supply and close the furnace door to prevent the refractory from being eroded by moisture.
Maintenance Tips for Muffle Furnace
Keep the furnace clean and free from debris. Regularly remove any ash or residue that accumulates inside the furnace.
Do not stack flammable or explosive materials around the furnace. Keep the area around the furnace clear to prevent any accidents or fires.
When the muffle furnace is not in use, cut off the power supply and close the furnace door. This will prevent the refractory materials from being corroded by moisture.
Keep the furnace away from inflammable materials and ensure that it has proper ventilation for heat dissipation. This will prevent the furnace jacket from becoming dangerously hot and reduce the risk of fire hazards.
Take care of the furnace frequently when in use to prevent accidents caused by the failure of automatic control. Do not operate the furnace when there is no one on duty, especially during nighttime.
After using the muffle furnace, cut off the power supply and allow it to cool naturally. Avoid opening the furnace door immediately to prevent sudden cold cracking. Only open the door when the temperature drops below 200 °C.
When adjusting the temperature of the muffle furnace, use the switch to turn it on if it is not already on. Use the arrow buttons on the digital reader placed under the door to adjust the target temperature to the desired level.
Monitor the temperature of the furnace while it heats up. You can use an external temperature monitoring device, such as a thermocouple, to cross-reference the accuracy of the furnace's built-in temperature sensor if precise temperature control is required.
Once the muffle furnace reaches the desired temperature, it will automatically control its heating components to maintain the setpoint temperature within a tolerance range. Check the control panel display to ensure that the furnace is operating at the desired temperature.
It is important to read and follow the user manual and directions specific to your muffle furnace model for best results. Familiarize yourself with the design and control features of your furnace to ensure accurate and reliable temperature control.
Ensure that the muffle furnace is placed in a suitable environment with proper ventilation. Avoid placing it in a moist location with limited air circulation, as this can lead to malfunctions and inaccurate testing results.
Our Certifications
Our Factory
Xinkyo Company was founded in 2005 by professional materials researchers. Its founder studied at Peking University and is a leading manufacturer of high-temperature experimental equipment and new materials research laboratory equipment. This enables us to provide high-quality, low-cost high-temperature equipment for materials research and development laboratories. Our products include high-temperature ovens, tube furnaces, vacuum furnaces, trolley furnaces, lifting furnaces, and other complete sets of equipment. Thanks to its excellent design, affordable prices, and customer service, Xinkyo is committed to becoming the world leader in materials science research for high-temperature equipment.
Ultimate FAQ Guide to Muffle Furnace
As one of the leading muffle furnace manufacturers and suppliers in China, we warmly welcome you to buy high-grade muffle furnace for sale here from our factory. All our products are with high quality and competitive price.