サンファーネス List of Products and Services

At San Furnace, we specialize in continuous "strand furnaces (wire bright annealing furnaces)." We design furnace structures that simplify heater replacement and regular maintenance tasks, allowing for smooth loading and unloading of annealing tubes. 【Problem Solving】We have addressed the following challenges: ■ We want to easily clean and inspect the oxidized scale that accumulates inside the furnace. ■ We want to reduce the electricity costs of the furnace and improve work efficiency. ■ We want to easily replace annealing tubes. By innovating the control panel programs, it is also possible to reduce electricity costs and enhance work efficiency. Please consult us for small lot production, heat treatment testing, and small sample manufacturing. *For more details, please contact us or download the PDF.

• Industrial Furnace

The rotary kiln (rotating retort furnace) can be used for the thermal treatment of powder materials. It ensures uniform drying and heat treatment by stirring the powder materials inside the rotating furnace core. In batch type, mixing, drying, and heat treatment are processed continuously. San Furnace, as a top manufacturer of rotary kilns, handles everything from design and manufacturing to installation and maintenance consistently. [Problem Solving] We have addressed the following challenges: ■ Want to use continuous type with 100% hydrogen but concerned about gas leaks. ■ Difficulties in continuous processing from powder input to discharge in batch type. ■ Large machines require preheating due to the introduction of large amounts of gas. Please consult us for small lot production, thermal treatment testing, and small sample manufacturing. When performing powder processing, not only heating furnaces but also upstream and downstream equipment, including conveying devices, are necessary. At San Furnace, we provide total solutions that include not just the furnace but also upstream and downstream equipment in collaboration with partner companies. *For more details, please contact us or download the PDF.

• Industrial Furnace

In a batch-type rotary kiln, it is possible to switch the atmosphere gas during the heat treatment process. This is effective when you want to reduce the use of expensive atmosphere gas at the start of heating at room temperature. Additionally, it is possible to process mixing, drying, and heat treatment in one go. 【Points for Selecting a Batch-Type Rotary Kiln】 ■ Want to process mixing, drying, and heat treatment in one step ■ Requires a long processing time ■ Has many temperature stages Please consult us for small lot production, heat treatment testing, or small sample manufacturing. As the processing volume increases, it is also possible to modify from a batch type to a continuous furnace. When processing powders, not only the heating furnace but also the upstream and downstream equipment, including the conveying system, is necessary. At San Furnace, we provide total proposals that include not just the furnace but also the upstream and downstream equipment in collaboration with partner companies. *For more details, please contact us or download the PDF.

• Industrial Furnace

In a continuous rotary kiln, it is possible to carry out the entire process from feeding powdered raw materials → heat treatment → cooling → discharge, which is effective in reducing raw material loss and waste. Additionally, automation of powder material feeding, quantification of cutting amounts, and control of heat treatment time are possible, leading to energy savings and cost reduction. 【Points for Selecting a Continuous Rotary Kiln】 ■ High processing capacity, suitable for handling large amounts at once ■ Processing in a single atmosphere ■ Short processing time ■ Few temperature stages Please consult us for small lot production, heat treatment testing, and small sample manufacturing. When performing powder processing, not only a heating furnace but also upstream and downstream equipment, including conveying devices, is necessary. At San Furnace, we provide comprehensive proposals that include not just the furnace but also upstream and downstream equipment through collaboration with partner companies. *For more details, please contact us or download the PDF.

• Industrial Furnace

The "aluminum heat treatment furnace" is capable of producing precise temperature distribution. Aluminum is a lightweight, strong, and corrosion-resistant metal with excellent properties such as good conductivity for electricity and heat. However, its characteristics can be enhanced through heat treatment. 【Features】 ■ Complies with AMS standards (American aerospace heat treatment standards) ■ Capable of producing precise temperature distribution ■ Handles batch continuous furnaces *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

The "non-ferrous metal heat treatment furnace" can accommodate various atmosphere gases. Non-ferrous metals refer to metals other than iron and iron-based alloys (steel). Non-ferrous metals require strict temperature control and oxygen concentration management. 【Features】 ■ Capable of accommodating various atmosphere gases ■ Precise temperature control is possible ■ Heat treatment considering automation, energy saving, and safety is achievable *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

When steel undergoes heat treatment in the atmosphere, oxidation and decarburization can occur, which may necessitate surface finishing and other processing. Therefore, a "controlled atmosphere furnace" is often used, where atmosphere gases are filled in the furnace for heating treatment to reduce post-processing efforts and suppress oxidation and decarburization, depending on the application. The atmosphere gases used can vary widely depending on the properties of the material and the purpose of the heat treatment, including inert gases such as nitrogen and argon, as well as hydrogen and AX gas. 【Features】 ■ Gas switching is possible during heat treatment ■ Various types of furnaces are available, including batch and continuous types ■ There are options for degreasing furnaces for powder metallurgy *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

The "annealing furnace" is a furnace that heats metal materials, holds them at a certain temperature, and then cools them slowly to remove residual stress and achieve a uniform structure. By softening the metal materials and equalizing the irregularities that occur during machining, the materials can exhibit their original properties. Glass is significantly affected by thermal history due to temperature variations during shaping and cooling speed, so annealing allows the arrangement of the structure to return to its original state, making it usable as optical glass. 【Features】 ■ Capable of appropriate cooling control such as rapid cooling, slow cooling, and over-aging ■ Capable of producing precise temperature distribution ■ Various atmospheric gases can be introduced *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

A "sintering furnace" is a type of furnace that shapes and hardens powder by placing it into a mold and heating it, giving it a specific shape and strength. It is used for metal powders. It can be configured to combine preheating, heating, and cooling zones into a single unit. 【Features】 ■ Used for metal powders ■ Customization options such as degreasing and adjusting the purity of the atmosphere gas ■ Can combine preheating, heating, and cooling zones into one unit ■ Temperature and time can be freely adjusted according to the type of material and heating conditions *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

The "firing furnace" is a furnace that shapes and hardens powder by placing it into a mold and heating it, giving it a specific shape and strength. It is used for heat treatment of oxide materials such as ceramics. It can be configured to combine preheating, heating, and cooling zones into a single unit. 【Features】 ■ Used for heat treatment of oxide materials such as ceramics ■ Customization options available for degreasing and adjusting the purity of atmosphere gases ■ Can integrate preheating, heating, and cooling zones into one unit ■ Temperature and time can be freely adjusted according to the type of material and heating conditions *For more details, please refer to the PDF document or feel free to contact us.

• Industrial Furnace

At San Furnace, we are distributing a "Glossary of Industrial Furnace Terminology" that summarizes basic terms related to industrial furnaces. It includes approximately 160 terms covering types of furnaces and materials, as well as names of processing methods. This resource is useful not only for beginners but also for experienced individuals to confirm their knowledge. ★ We are also distributing a comprehensive catalog of industrial furnaces! The catalog introduces various product examples. 【Our Product Lineup】 ■ Firing Furnaces / Sintering Furnaces ■ Annealing Furnaces / Tempering Furnaces ■ Quenching Furnaces / Tempering Furnaces ■ Wire Rod Bright Annealing Furnaces ■ Rotary Kilns ■ Stainless Steel Heat Treatment Furnaces ■ Aluminum Heat Treatment Furnaces ■ Non-Ferrous Metal Heat Treatment Furnaces ■ Atmosphere Furnaces ■ Vacuum Furnaces ■ Atmosphere Gas Generators *For more details, please feel free to contact us.

• Industrial Furnace

A rotary kiln is a thermal processing industrial furnace that heats and sinters powdered raw materials while stirring them inside a rotating furnace core tube. It can accommodate 100% hydrogen due to its special gas seal structure. It is capable of producing muffles with excellent corrosion and heat resistance. 【Features】 ■ Can accommodate 100% hydrogen due to the special gas seal structure ■ Total support including front and rear devices ■ Provides appropriate material feeding structures tailored to specific characteristics Please consult us for small lot production, heat treatment testing, and small sample manufacturing. If you are considering transitioning from batch-type to continuous furnaces due to increased processing volume, we can also propose a transition plan. *For more details, please contact us or download the PDF.

• Industrial Furnace

When heat treatment is performed in the atmosphere, steel reacts with oxygen and forms oxide scale on the surface, so a vacuum furnace is used when it is necessary to avoid an oxidizing atmosphere. 【Features】 ■ Rapid cooling with pressurized gas is possible ■ Seamless temperature measurement in multi-chamber types is possible 【Examples of Achievements】 〇 Batch-type vacuum degreasing furnace 〇 Pit-type vacuum annealing furnace 〇 Batch-type vacuum decarburization furnace 〇 Snake chain-type vacuum oil removal device, etc.

• Industrial Furnace

At San Furnace, we are distributing a "Glossary of Industrial Furnace Terms" that summarizes basic terminology related to industrial furnaces. It includes approximately 160 terms related to types of furnaces, materials, and processing methods. This resource is useful not only for beginners but also for experienced individuals to confirm their knowledge. ★ We are also distributing a comprehensive catalog of industrial furnaces! The catalog includes various product examples. 【Our Product Lineup】 ■ Firing Furnaces / Sintering Furnaces ■ Annealing Furnaces / Tempering Furnaces ■ Hardening Furnaces / Tempering Furnaces ■ Wire Bright Annealing Furnaces ■ Rotary Kilns ■ Stainless Steel Heat Treatment Furnaces ■ Aluminum Heat Treatment Furnaces ■ Non-Ferrous Metal Heat Treatment Furnaces ■ Atmosphere Furnaces ■ Vacuum Furnaces ■ Atmosphere Gas Generators *Please feel free to contact us for more details.

• Industrial Furnace

Non-ferrous metals refer to metals other than iron and iron-based alloys (steel). Non-ferrous metals require strict temperature control and oxygen concentration management. At San Furnace, we can propose heat treatment furnaces for the following materials classified as "non-ferrous metals": ● Magnesium alloys ● Titanium alloys ● Copper and copper alloys ● Zinc ● Silver and precious metals ● Molybdenum ● Tungsten ● Cobalt ● Nickel 【Features】 ● Various atmospheric gases can be introduced. ● Precise temperature control is possible. Since the heat treatment methods vary according to the characteristics of the materials, we will propose industrial furnaces tailored to your applications. 【Case Studies】 ■ Want to anneal copper wire → 'Pot-type bright annealing furnace' ■ Want to anneal phosphor bronze wire → 'Bell-type annealing furnace' 'Pot-type vacuum furnace' ■ Want to anneal pressed brass products → 'Bell-type vacuum annealing furnace' 'Pot-type vacuum furnace' ■ Want to anneal rolled molybdenum products → 'Roller hearth type atmosphere annealing furnace' ■ Want to preheat magnesium alloys before melting → 'Preheating charging device' We can also propose automation, energy-saving, and safety improvements for industrial furnaces. Please feel free to consult with us.

• Industrial Furnace

Aluminum is a lightweight, strong, and corrosion-resistant metal with excellent properties such as good conductivity of electricity and heat. Its characteristics can be enhanced through heat treatment. Prior to forging, softening is achieved through annealing, and to increase the strength of the product, T6 treatment (aging treatment) is performed. 【Features】 ● Compliant with AMS standards (U.S. aerospace heat treatment standards). ● Capable of achieving precise temperature distribution. ● Handling of batch continuous furnaces is available. 【Case Studies】 ■ Want to anneal aluminum without oxidation → 'Roller Hearth Softening Furnace' ■ Want to heat treat aluminum → 'Aluminum Solution Treatment Furnace (T4)', 'Aluminum Aging Furnace (T5)', 'Aluminum Solution Aging Furnace (T6)' ■ Want to bright anneal aluminum → 'DX Gas Generation Device' If you have new challenges or inquiries regarding energy conservation, automation, environmental considerations, or safety, please feel free to contact us.

• Industrial Furnace

The "sintering and firing furnace" is a furnace that imparts a specific shape and strength by placing powder into a mold, shaping it, and heating it to harden. It is mainly used in the production of ceramics and battery materials. The name changes depending on the material being hardened: oxide-based materials like ceramics are processed in a "firing furnace," while heat treatment of metal powders is done in a "sintering furnace." Types of metal powders include iron, copper, aluminum, titanium, lithium, and manganese. 【Features】 ● Customization options such as additional debinding and adjustment of the purity of the atmosphere gas are available. ● Preheating, heating, and cooling zones can be integrated into a single unit. ● Temperature and time can be freely adjusted according to the type of material and heating conditions. The "sintering and firing furnace" comes in batch and continuous types. 【Case Studies】 ■ To debind or protect the surface of powder in powder metallurgy from an oxidizing atmosphere → "Vacuum Sintering Furnace" ■ To adjust the gas purity in the furnace atmosphere → "Pusher Type Sintering Furnace" ■ To fire glass paste used on substrates → "Conveyor Type Glass Firing Furnace" ■ To mold difficult-to-sinter materials with high precision → "Hot Press Furnace"

• Industrial Furnace

It is used for purposes such as removing distortion after welding, preventing deformation of processed products, removing surface oil, and solid solution treatment. Stainless steel is used in machine parts and buildings due to its excellent corrosion resistance and strength. 【Features】 ● Bright heat treatment of strip steel and wire rod is possible. ● We handle the "strand-type wire rod annealing furnace" for heat treating wire rod. ● Customization of temperature measurement settings and safety devices in industrial furnaces is also possible. 【Heat Treatment Methods by Stainless Steel Type】 ● Austenitic: Solution treatment, stabilization, stress relief, aging ● Ferritic: Annealing ● Martensitic: Annealing, tempering, quenching, tempering 【Case Studies】 ● Want to continuously heat treat strip materials → "Catenary-type bright annealing furnace" ● Want to perform annealing treatment while removing elements that negatively affect heat treatment → "Degreasing annealing furnace" ● Want to correct shape while performing annealing treatment → "Tension annealing furnace" ● Want to heat treat multiple wire rods at once → "Wire rod bright annealing furnace" If you have any concerns about stainless steel heat treatment, please feel free to consult us.

• Industrial Furnace

When steel undergoes heat treatment in the atmosphere, oxidation and decarburization can occur, which may necessitate surface finishing and other processing. Therefore, atmosphere furnaces are often used to fill the furnace with atmosphere gases to reduce post-processing efforts or to suppress oxidation and decarburization, depending on the application. The atmosphere gases used can vary widely based on the properties of the material and the purpose of the heat treatment, including inert gases such as nitrogen and argon, as well as hydrogen and AX gas. 【Features】 ● Gas switching is possible during heat treatment. ● There are various types of furnaces available, including batch and continuous types. ● We handle degreasing furnaces for powder metallurgy. 【Case Studies】 ■ Want to anneal aluminum without oxidation → 'Roller Hearth Annealing Furnace' ■ Want to carburize the material → 'Batch Atmosphere Gas Carburizing Furnace' ■ Want to nitrify powders → 'Retort Rotary Nitriding Furnace' If you have any new challenges or inquiries regarding energy conservation, automation, environmental considerations, or safety, please feel free to reach out.

• Industrial Furnace

Atmospheric gas refers to the gases present around materials during heat treatment in industrial furnaces. By generating "oxidation" or atmospheric gases to induce chemical reactions within the furnace, it is possible to achieve effects such as oxidation prevention and decarburization. It is used for various applications, such as "hardening" steel or intentionally making it brittle to change its composition. 【Features】 ● It is possible to reduce the costs of hydrogen gas and nitrogen gas. ● It is also possible to reuse exhaust gases. 【Types of Atmospheric Gases】 ● Heat-generating conversion devices (DX gas generation devices) ● Heat-absorbing conversion devices (RX gas generation devices) ● Ammonia decomposition gas generation devices (AX gas generation devices) ● Others (such as N2 generation devices) 【Case Studies】 ■ Want to reduce the cost of reducing gases → 'AX gas generation device' ■ Want to adjust the carbon concentration in the atmosphere → 'RX gas generation device' ■ Want to bright anneal aluminum → 'DX gas generation device' ■ Want to produce N2 atmosphere at a low cost → 'N2 generation device PSA' Please feel free to consult us regarding cost reduction for expensive atmospheric gases, safety measures such as gas leak detectors, or adjustments for oxygen concentration meters, gas generation amounts, and purity.

• Industrial Furnace

When heat treatment is performed in the atmosphere, steel reacts with oxygen, resulting in the formation of oxide scale on the surface, so it is used when one wants to avoid an oxidizing atmosphere. Performing heat treatment in a vacuum atmosphere allows for the degreasing and degassing of organic substances adhered to the surface of the metal material, resulting in a surface with the inherent luster of the metal material after treatment. 【Features】 ● It is possible to enhance the value of metal materials by maintaining their luster. ● Since subsequent processes such as acid cleaning and degreasing are unnecessary, work efficiency is improved. 【Case Studies】 ■ I want to anneal copper without oxidation → 'Vacuum Annealing Furnace' ■ I want to finish the surface of the treated product cleanly → 'Vacuum Quenching Furnace' ■ I want to improve the wettability for brazing → 'Vacuum Brazing Furnace' ■ I want to improve the hot working environment around the furnace → 'Vacuum Furnace'

• Industrial Furnace

The "annealing furnace" is a furnace that heats metal materials to soften them, holds them at that temperature, and then cools them slowly to remove residual stress and achieve a uniform structure. If the processes of sintering or firing are incomplete, or if the temperature and cooling speed during shaping, the reuse of materials, and the ambient temperature have a significant impact on the thermal history, the hardness of the structure may become uneven, leading to machining irregularities. By softening through annealing treatment, the material can exhibit its original properties. Annealing is also known as "normalizing" or "annealing." 【Features】 ● Appropriate cooling control for rapid cooling, slow cooling, and over-aging is possible. ● Precise temperature distribution can be achieved. ● Various atmosphere gases can be introduced. 【Case Studies】 ■ Want to anneal copper without oxidation → "Vacuum Bright Annealing Furnace" ■ Want to fully anneal steel → "Pit Type Non-Oxidizing Annealing Furnace" ■ Want to anneal castings → "Trolley Type Annealing Furnace" ■ Want to anneal large parts of press products → "Trolley Type Annealing Furnace" / "Pit Type Annealing Furnace" ■ Want to anneal optical glass molded products → "Trolley Type Annealing Furnace"

• Industrial Furnace

A wire rod bright annealing furnace is a heat treatment furnace that heats wire rods (the material for wire) coiled in a spiral shape while they are in an elongated state, and heats (or cools, etc.) them while winding them up. At Sun Furnace, we specialize in continuous wire rod bright annealing furnaces (strand furnaces). We construct the furnace to simplify heater replacement and regular maintenance tasks, allowing for smooth loading and unloading of annealing tubes into and out of the furnace. By innovating the control panel program, it is also possible to reduce electricity costs and improve work efficiency. **Features of Sun Furnace's Wire Rod Bright Annealing Furnace** - **Custom Design of Furnace Body and Annealing Tube** We can flexibly accommodate all conditions, such as the length and size of the furnace based on processing speed, wire diameter, and treatment conditions of the introduced gas, as well as the shape considering maintenance of the furnace based on the installation location and compatibility with upstream and downstream equipment. - **Cost Reduction** We can propose equipment that keeps running costs low during normal operation. The furnace is constructed with an optimal design that minimizes heat loss. Automatic temperature control and supply gas control are possible even during times when the furnace is not in use, such as on weekends, leading to cost reduction. - **Quality** We select high-quality consumables, such as heaters and thermocouples, that can be used for a long time.

• Industrial Furnace

When considering industrial furnaces, have you thought about examining a small prototype to confirm performance and usability before introducing a large production machine? It's okay if you don't have drawings at the planning stage. If you convey your vision, we will bring it to shape. At San Furnace, we provide total support from design, manufacturing, installation, maintenance, to aftercare. We will work closely with you until you are completely satisfied, not just during installation but also afterwards. We have numerous achievements in transitioning from prototype machines to large production machines. Additionally, we assist in creating products that meet your specific requirements, including environmental measures, energy efficiency improvements, and automation systems.

• Industrial Furnace

San Furnace is an industrial furnace manufacturer that provides total support from design, manufacturing, installation, maintenance, to after-sales follow-up. We will work closely with our customers until they are completely satisfied, not only during installation but also afterwards! Our customers have expressed their happiness with our high-performance products. Here are some examples of their satisfaction. [Case Study: Improved Temperature Distribution] The heating range and processing time vary by customer, but we addressed phenomena such as certain areas having higher temperatures by changing the heater arrangement, adjusting the fan capacity to appropriate levels, and implementing methods to seal heat and gas leaks from doors, resulting in improved temperature distribution. [Case Study: Automation Achieved] By automating processes that were previously done manually out of necessity, we reduced the burden on users, which they appreciated. [Case Study: No More Leaks] For customers struggling with gas and liquid leaks, we assisted in modifying the sealing structure. Additionally, when they introduced a new San Furnace, they recognized the excellent performance of our sealing structure.

• Industrial Furnace

Sanfurnace is an industrial furnace manufacturer that provides total support from design, manufacturing, installation, maintenance, to after-sales follow-up. We will work closely with our customers "to the end" until they are fully satisfied, not just during installation but also afterwards! We will flexibly respond to design changes and modifications to make our products more user-friendly. We are committed to striving every day to exceed our customers' expectations in design. We will make proposals tailored to our customers' environments and usage conditions, and we will plan control systems according to their requests.

• Industrial Furnace

The size, shape, and material of samples vary depending on the customer. When your existing equipment cannot accommodate new research and development projects or challenges in new fields, you can visit our company to see the results firsthand. 【Testing Examples】 ◆ Tests involving heating treatment with moving samples When powder is heat-treated, unevenness occurs, resulting in inconsistent sample quality. By conducting tests using a rotary kiln that moves the samples during processing, we achieved uniform heat treatment without unevenness. ◆ Tests involving heating treatment with stationary samples During heat treatment tests of powder in a rotary kiln, the powder tended to clump together significantly. To address this, we introduced a special powder container into a muffle furnace and efficiently processed the powder by directly flowing hydrogen into the container, preventing it from solidifying. Many customers are considering transitioning to a rotary kiln when heat treatment does not go well with their existing furnace. We also offer gas recommendations tailored to each sample. We are committed to addressing even your small questions and requests with full effort. With our long-standing achievements and experience as a manufacturer of industrial furnaces, we provide total support from specification determination to aftercare.

• Industrial Furnace

San Furnace is an industrial furnace manufacturer that provides total support from design, manufacturing, installation, maintenance, to after-sales service. We will work closely with you until you are completely satisfied, not only during installation but also afterwards! Since our designers also carry out the construction directly, you can trust us completely. By having our designers communicate directly with customers, we can easily reflect their opinions in the equipment, which many customers appreciate. We have received feedback from many customers saying, "It's easy to ask for help and I feel secure!" and "The usability has improved!" We sincerely and thoroughly consider our customers' needs. If you have any issues with industrial furnaces, please feel free to consult us at any time.

• Industrial Furnace

Do you have any concerns like these regarding powder heat treatment? ✔ I want to reduce losses and waste of powder raw materials... ✔ I want to reduce labor and process continuously... ✔ I want to manage heat treatment temperature and time... We will collaborate with powder equipment manufacturers to provide total proposals and solutions based on your concerns and requests. 【Examples of Solutions】 Q: I want to reduce losses and waste of powder raw materials... A: With a continuous rotary kiln, it is possible to input powder raw materials → heat treatment → cooling → discharge. Q: I want to reduce labor and process continuously... A: Automation of powder material input, quantification of cutting amounts, and control of heat treatment time are possible, achieving energy savings and cost reduction. Q: I want to manage heat treatment temperature and time... A: It can be measured by directly monitoring the temperature during powder heat treatment. *For more details, please contact us or download the PDF.

• Industrial Furnace

A powder material heat treatment furnace, known as a rotary kiln, is an industrial heat treatment furnace that heats and sinters powder raw materials while stirring them inside a rotating furnace core tube. This equipment can be used for the sintering, sintering, reduction, oxidation, nitriding, and drying of powder materials, including batteries. Since it stirs the powder while drying and heat treating in a rotary manner, there are no inconsistencies. There are two types of rotary kilns: "batch type" and "continuous type." The "batch type" can process mixing, drying, and heat treatment in one go. The "continuous type" can handle larger production volumes. 【Features】 ● It can accommodate 100% hydrogen due to its special gas seal structure. ● It can propose everything necessary for powder processing, including front and rear devices. ● In the batch type, gas switching is possible during heat treatment. Please consult us for small lot production, heat treatment testing, and small sample manufacturing. If you are considering transitioning from batch type to continuous furnaces due to increased processing volume, we can also propose a transition plan.

• Industrial Furnace