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![Ultra-high temperature carbon furnace [up to 2800℃]](https://image.mono.ipros.com/public/product/image/2e1/68420016/IPROS_11853087399018078000.jpg?w=280&h=280)
Maximum temperature: 2800℃! Atmosphere furnace [Graphite furnace]
Expert company in electric furnaces, atmosphere furnaces, heating, and heat treatment technology. Here is an introduction to the "Ultra High Temperature Carbon Furnace" manufactured by Marusho Electric Co.
Stable processing of graphitization, carbonization, and ultra-high temperature sintering at extremely low oxygen levels and 3000°C grade.
The "carbon furnace" is a heating furnace designed for ultra-high temperature processing at around 3000°C, constructed with heaters, insulation materials, and furnace walls made of graphite. By maintaining a low oxygen concentration through vacuum replacement and an inert gas atmosphere, it suppresses oxidation and re-oxidation at high temperatures, allowing for processes such as graphitization, carbonization, sintering, crystallization, and high-temperature modification. It is suitable for high-temperature processing of materials that require higher temperatures or specific atmospheres than typical electric furnaces can provide, including carbon materials, C/C composites, SiC, B4C, ceramics, and metal powders. 【Features】 ■ Capable of ultra-high temperature processing at around 3000°C ■ Forms a low-oxygen atmosphere with vacuum replacement and inert gas ■ Applicable for improving graphitization and crystallinity of carbon materials ■ Supports high-temperature sintering of ceramics such as SiC and B4C ■ Compact design makes it easy to introduce for research and development or condition testing *For more details, please download the materials or contact us.
Graphitization / High-temperature annealing / Surface modification / Ash content reduction all in one machine. Compatible with vacuum × Ar/H2, highly reproducible heat treatment from research to small-scale production.
Our company handles "carbon furnaces" that operate at temperatures around 3000°C with extremely low oxygen levels. We solve issues such as the inability to reduce oxygen partial pressure, oxidation and decarburization occurring in high-temperature regions that prevent reaching target characteristics, and the limited freedom of tray design and low processing capacity/strict sample size constraints in tube furnaces. These can be used for applications involving graphite materials, graphite foils, graphite sheets, isotropic graphite, and molded bodies. [Reasons for Effectiveness in Graphitization] - Easy to create extremely low oxygen: The furnace material is carbon, which chemically captures residual oxygen, and vacuum replacement eliminates air inside the sample in advance. - Temperature range of around 3000°C: Stable heat distribution and retention in the -3000°C graphitization zone, with rapid attainment and high reproducibility. - Flexibility in tray/casing design: Rectangular casings and stacking allow for simultaneous processing of multiple samples, speeding up condition setting. - Atmospheric flexibility: It is possible to combine vacuum/Ar/N2/low concentration H2 to reduce defects and facilitate thermal desorption. *For more details, please feel free to contact us.
Vacuum replacement, high airtight structure, and graphite heating achieve both low oxygen and treatment at 3000°C level.
The "small carbon furnace" we handle is a heating furnace capable of achieving both a low oxygen atmosphere and ultra-high temperature processing at around 3000°C. In high-temperature processing, residual oxygen and minor leaks within the furnace can lead to oxidation, re-oxidation, and material degradation. This equipment enables ultra-high temperature processing while minimizing the effects of oxygen through vacuum pumping for replacement, a high airtight seal design, and efficient heating with graphite heaters. It is suitable for applications where conventional electric furnaces are insufficient in temperature or atmosphere, such as the graphitization of carbon materials, sintering of ceramics like SiC and B4C, and heat treatment of high melting point materials. 【Features】 ■ Reduction of residual oxygen in the furnace through vacuum replacement ■ Suppression of minor leaks with a high airtight seal design ■ Rapid heating to ultra-high temperature ranges with graphite heaters ■ Stable attainment up to the 3000°C class ■ Structure that easily maintains a low oxygen atmosphere even during long-term operation *For more details, please download the materials or contact us.
Re-evaluation of high-temperature treatment at around 3000°C using vacuum replacement and carbon gettering.
We can accommodate ultra-low oxygen and ultra-high temperature sintering tests before equipment installation. Even at a stage where temperature, atmosphere, and processing time are not yet determined, you can consult us about the test conditions tailored to your objectives. Through preliminary evaluations using actual samples, we can confirm graphitization, recrystallization, grain growth, phase formation, and oxidation effects, which can be utilized in the consideration of equipment specifications. Our "carbon furnace" addresses challenges such as the time-consuming condition setting and the difficulty of achieving reproducibility in short cycles. By evacuating the air inside the sample in advance, we shorten the replacement time. Additionally, with the flexibility of tray arrangement and shelf configuration, we can arrange rectangular containers in parallel, allowing for the evaluation of thickness variation effects. We also have test equipment available. Please feel free to contact us when needed. [Reasons Why Our Carbon Furnace is Effective (Partial)] ■ Sintering under ultra-low oxygen partial pressure - Vacuum → staged replacement with Ar/N2 - Reduction of residual O2/oxidizing species through the getter effect of carbon materials ■ Ultra-high temperature processes - Long-term stable operation in the range of 2800°C for regular use, up to a maximum of 3000°C - Precise control of grain growth and rearrangement through gradual heating and holding in the range of 1200°C to 2600°C *For more details, please feel free to contact us.
Reproducibly perform graphitization, carbonization, nitridation, and high-temperature modification in an extremely low oxygen atmosphere.
The "carbon furnace" we handle is an electric furnace designed for high-temperature processing at around 3000°C in an extremely low-oxygen atmosphere. By using vacuum replacement, the air inside the furnace is preemptively expelled, and the getter effect of the carbon material reduces residual oxygen and oxidizing components. It is structured to suppress oxidation, decarburization, and re-oxidation in high-temperature regions, making it easier to reproduce processing conditions such as graphitization, carbonization, nitridation, and high-temperature modification. It can be applied to high-temperature processing of carbon materials, carbon black, CNT, CNF, graphite sheets, ceramics, powder metallurgy materials, semiconductor fixtures, and more. 【Features】 ■ High-temperature sintering in an extremely low-oxygen atmosphere ■ Usable at a constant 2800°C, with a maximum of 3000°C ■ Reduction of residual air in the furnace through vacuum replacement ■ Oxygen getter effect from the carbon material ■ Design allows for simultaneous processing of multiple samples with a saya-tray configuration *For more details, please download the materials or contact us.
Supports the development and manufacturing of heat-resistant components for aerospace applications through high-temperature firing at up to 3000℃ in a low-oxygen atmosphere.
In the aerospace field, the quality stability of heat-resistant components and composite materials used in high-temperature environments is crucial. For the firing of turbine parts, rocket-related components, C/C composites, and ceramic materials, not only temperature conditions but also vacuum and inert atmosphere control to suppress oxidation are required. Our carbon furnace supports high-temperature heating up to 3000°C and enables high-temperature firing in a low-oxygen atmosphere by replacing the environment with Ar, N2, etc., after vacuuming. We offer custom designs based on the material, size, temperature, and atmosphere of the items being processed, including firing, carbonization, graphitization, sintering, and heat treatment conditions for heat-resistant components. ■ I want to consider firing conditions for heat-resistant components for aerospace applications. ■ I want to perform high-temperature processing above 2000°C. ■ I want to process C/C composites and ceramic materials. ■ I want to fire in a vacuum or inert atmosphere that suppresses oxidation. ■ I would like to consult from research and development to prototype and pre-mass production evaluation.
Supports high-density and sintering of ceramics in a high-temperature firing of up to 3000℃ and low-oxygen atmosphere.
In the densification of ceramic materials, it is necessary to examine the optimal heat treatment conditions for each material, including debinding, pre-sintering, sintering, pressure sintering, and atmosphere control. In particular, when high-temperature processing is desired while suppressing oxidation, or when the temperature, atmosphere, and furnace dimensions of a conventional electric furnace do not meet requirements, the use of a carbon furnace is effective. Our carbon furnace supports high-temperature heating up to 3000°C and enables firing in a low-oxygen atmosphere by replacing the environment with inert gases such as Ar or N2 after vacuum pumping. Custom designs tailored to specific purposes are possible, ranging from research and development to mass production equipment, for applications such as densification of ceramics, promotion of sintering, phase formation, and high-temperature processing after debinding. We can address challenges such as the following: ■ I want to increase the density of ceramics. ■ I want to consider high sintering temperatures. ■ I want to consistently perform firing and densification after debinding. ■ I want to fire while suppressing oxidation and compositional changes. ■ I want to process in atmospheres such as Ar, N2, or vacuum. ■ The dimensions and temperature conditions of off-the-shelf furnaces do not meet my needs. ■ I want to consult from lab testing to mass production furnaces.
A small carbon furnace that suppresses oxidation and property variation through high-temperature treatment at 2,000 to 3,000℃.
"Although the temperature is achieved, the targeted reaction site cannot be created." In high-temperature processing of carbon materials, ceramics, and high-melting-point materials, simply raising the temperature is not sufficient. Slight differences in furnace oxygen, heating rate, thermal history, and furnace atmosphere can lead to oxidation/re-oxidation, characteristic fluctuations, and reaction inconsistencies. This document explains the capabilities of the "small carbon furnace," which balances an ultra-low oxygen atmosphere with high-temperature processing in the range of 2,000 to 3,000°C, from a practical perspective. [For challenges like these] ■ Heating can be done, but the sample state and characteristics are unstable. ■ Large furnaces take time to start up, making it difficult to establish conditions. ■ We want to suppress oxidation/re-oxidation during high-temperature processing. ■ We want to align oxygen management and thermal history to reproduce crystallinity, conductivity, and microstructure. The small carbon furnace facilitates short trial runs, condition changes, oxygen management, and thermal history management, making it suitable for condition exploration in research and development or prototype stages. *For more details, please download the document or contact us.
Explaining the background of the development of a small carbon furnace for dry reduction, graphitization, and carbonization treatment.
While the demand for dry and reduction-type heat treatment is increasing, there are challenges in research settings such as "insufficient temperature," "incompatible charge sizes," and "difficulty in maintaining low-oxygen atmospheres." In particular, for the graphitization of carbon materials, carbonization and nitridation of ceramics, and dry processing of battery materials and catalyst supports, conventional electric furnaces may lack the necessary temperature, atmosphere, and processing space. Our small carbon furnace aims to achieve short heating times, high-temperature uniformity, and low-oxygen atmospheres through the use of graphite heating elements, high insulation structures, vacuum replacement, and inert gas atmosphere control. **Main Challenges in Research Settings** - Limitations on maximum achievable temperature prevent the reproduction of high-temperature processing conditions. - The small amount of charge sample and effective heating area make scaling difficult. - Maintaining a low-oxygen atmosphere is challenging, leading to oxidation and re-oxidation. - There is a desire to investigate dry reduction, graphitization, carbonization, and nitridation conditions using a small furnace. *For more details, please download the materials or contact us.*
Suppressing residual oxygen while reaching 3000°C. An explanation of the structure and principle of a small carbon furnace.
The small carbon furnace is characterized by its ability to achieve both an extremely low oxygen atmosphere and ultra-high temperature processing at around 3000°C. This document explains why it is possible to maintain a low oxygen environment and why high-temperature processing at around 3000°C is achievable, from the perspectives of furnace materials, vacuum replacement, inert gas purging, and thermal design. By constructing the interior of the furnace with graphite components, it becomes easier to suppress the influence of oxidative components such as residual O2, CO2, and H2O in high-temperature regions. Additionally, by combining vacuum pumping with inert gas replacement using Ar/N2, the air remaining inside the powder and the furnace is expelled, creating an atmosphere suitable for processing materials that are sensitive to oxidation. [Explanation Contents] ■ Why can an extremely low oxygen atmosphere be formed? ■ The role of vacuum replacement and inert gas purging ■ Reduction of oxygen influence through graphite furnace materials ■ Why is ultra-high temperature processing at around 3000°C possible? ■ Reasons suitable for graphitization, carbonization, and high-temperature sintering *For more details, please download the document or contact us.
Introduction to the applications of small carbon furnaces, such as graphitization, carbonization, sintering, and high-temperature reaction evaluation.
Our "Small Carbon Furnace" is an electric furnace designed for high-temperature processing at around 3000°C in a low-oxygen atmosphere. By using graphite components inside the furnace and treating it in an inert gas atmosphere such as Ar or N2 after vacuum replacement, we create a stable heating environment that suppresses oxidation and re-oxidation at high temperatures. This document introduces the main applications of the small carbon furnace, including the synthesis and sintering of high-temperature materials, high crystallization of carbon materials, high-temperature processing and reduction reactions of metal materials, high-temperature gas reaction evaluations, and small-scale testing for research and development. 【Main Application Examples】 ■ Synthesis and sintering of high-temperature materials ■ Graphitization and high crystallization treatment of carbon materials ■ High-temperature processing and reduction reactions of metal materials ■ High-temperature gas reaction evaluations using N2, H2, Ar, etc. ■ Material process evaluations at research and development or prototype scales *For more details, please download the document or contact us.
Pre-evaluation of carbide reactions such as SiC, TiC, and ZrC in low oxygen and high temperature environments.
We can accommodate carbonization and high-temperature sintering tests before equipment installation. Even at a stage where temperature, atmosphere, and processing time are not yet determined, you can consult us regarding the consideration of test conditions based on your objectives. Through preliminary evaluations using actual samples, we can confirm reactivity and utilize this information for equipment specifications. Our company offers a small "carbon furnace" that can be gradually replaced from vacuum to inert gas. It can be used for experiments and processes involving solid-phase carbonization (powder mixing method, coating method, carburizing) and composite carbonization (such as using B4C) to enhance hardness and optimize carbon supply conditions (types, ratios, and contact states of carbon materials). Please feel free to contact us if you have any requests. [Reasons why our carbon furnace is chosen (partial)] ■ Rapidly reaches high-temperature ranges - Stable attainment and maintenance of 1600-2800℃ - Temperature guidelines effective for carbonization: SiC 1600–2000℃, TiC 1500–2100℃, ZrC 1800–2300℃ ■ Suppresses side reactions at extremely low oxygen partial pressures - Vacuum draw → Replacement with Ar/N2 - Reduces residual oxygen through carbon getter materials, suppressing CO generation *For more details, please feel free to contact us.
Pre-evaluation of N₂-based nitriding reactions in a very low oxygen, high-temperature environment.
We can accommodate nitriding and high-temperature sintering tests before equipment installation. Even at a stage where temperature, atmosphere, and processing time are not yet determined, you can consult us about testing conditions tailored to your objectives. Through preliminary evaluations using actual samples, you can confirm reactivity and utilize the information for equipment specifications. The "carbon furnace" we handle is well-suited for basic nitriding reaction tests. Since the reaction initiation temperature is high with N2 alone, balancing particle growth and coarsening is challenging, and issues such as surface reoxidation during cooling leading to variations in color, resistance, and hardness can arise. We address these challenges. Additionally, we have production records for furnaces at mass production scales, not just small units. Please feel free to contact us when needed. [Reasons Why Our Carbon Furnace is Effective] ■ Creates an extremely low oxygen partial pressure - Vacuum pumping → Gradually lowering oxygen potential through N2 replacement - The carbon material in the furnace absorbs residual O2 through getter action, suppressing oxidation side reactions ■ Quickly reaches sufficient high-temperature ranges - Reaches and maintains stability at 1400-2400°C in a short time ■ Conditions can be established in a short cycle - Multiple samples can be evaluated simultaneously with a shelf configuration, making it easier to verify the effects of thickness and contact *For more details, please feel free to contact us.
Supports new material development and prototype evaluation with high-temperature firing up to 3000℃ and atmosphere control.
In the development of new materials and research applications, a high-temperature furnace that can extensively examine the thermal treatment conditions of materials is essential. In particular, for high-temperature sintering above 2000°C, carbonization and graphitization, ceramic sintering, and thermal treatment of powder materials, atmosphere control such as vacuum, inert gas, and low-oxygen environments becomes crucial. Our carbon furnace supports high-temperature heating up to 3000°C and enables high-temperature processing with reduced oxidation by replacing the atmosphere with inert gases such as Ar and N2 after vacuum pumping. We offer custom designs based on the size, temperature, atmosphere, and processing volume of the materials, ranging from small furnaces for research and development to equipment for prototype evaluation and pre-mass production studies. We can accommodate research and development themes such as the following: ■ High-temperature sintering and thermal treatment of new materials ■ Examination of high-temperature processes above 2000°C ■ Carbonization and graphitization of carbon materials ■ Sintering of non-oxide ceramics such as SiC, AlN, and BN ■ Sintering of battery materials, negative electrode materials, and conductive materials ■ Evaluation of powder molded bodies, pellets, and sintered bodies ■ Sintering under atmosphere control with vacuum, Ar, N2, etc. ■ Scale-up studies from laboratory scale to pre-mass production evaluation
Supports high-temperature sintering up to 3000℃. Assists in carbonization, graphitization, and debinding processes in a low-oxygen atmosphere.
The carbon furnace is an electric furnace designed to handle high-temperature processes exceeding 2000°C, such as carbonization treatment, graphitization treatment, high-temperature sintering, debinding treatment, powder metallurgy, and ceramics sintering. By using carbon materials for the in-furnace heater, it can accommodate high-temperature treatments from atmospheric pressure up to a maximum of 3000°C. Additionally, after vacuuming, it can be replaced with inert gases such as Ar or N2, allowing for sintering while suppressing the oxidation of materials. It is particularly suitable for customers with the following challenges: ■ Wanting to perform high-temperature sintering above 2000°C ■ Wanting to sinter carbon materials, C/C composites, SiC, and ceramics ■ Wanting to carry out carbonization and graphitization treatment consistently after debinding ■ Wanting to process in atmospheres containing Ar, N2, vacuum, or H2 as needed ■ Wanting to sinter in a low-oxygen atmosphere that suppresses oxidation ■ Wanting to consider everything from lab tests to mass production equipment We design and manufacture custom carbon furnaces according to the size of the materials being processed, processing temperature, atmosphere gas, target oxygen concentration, heating patterns, and cooling conditions.
