PRODUCTSProduct Information
HEATING FURNACE
A heating furnace is a device used to heat materials—from low to high temperatures—to a specified temperature. At Tanabe, we have been recommending electric furnaces in recent years in light of efforts to reduce CO2 emissions and achieve carbon neutrality.
A heating furnace is a device used to heat materials at temperatures ranging from low to high, bringing them up to a specified temperature. Heat is introduced into the furnace to maintain the temperature. The type of equipment varies depending on the heat source—such as electric or gas—and the size and configuration of the equipment also differ based on the materials being processed. In recent years, due to efforts to reduce CO2 emissions and achieve carbon neutrality, our company recommends electric models.
We can design equipment for a wide range of temperatures, from low to high. There are various types of furnace atmospheres, including inert gases (nitrogen, argon, etc.), oxidizing gases (oxygen, etc.), reducing gases (hydrogen, ammonia, etc.), and carburizing gases (carbon monoxide, hydrocarbon gases). Equipment is designed to accommodate processing times, such as continuous furnaces and batch furnaces. Automation, including door operation, is also available. Fuel options include electric, gas (city gas, propane, LNG), and liquid fuel (heavy oil, kerosene).
These are furnaces that use thermal energy to heat materials. They have a wide range of applications and are used in all kinds of industrial settings. Currently, there are electric furnaces and gas furnaces, among others.
Resistance heating is a principle that generates heat by utilizing electrical resistance. In a resistance heating furnace, an electric current passes through a heating element made of a highly conductive material, generating heat known as Joule heat. The heating element comes into direct contact with the object and heats it by transferring heat.
Induction heating is a process that generates heat by creating a high-frequency electromagnetic field, which induces currents within an object. In an induction heating furnace, a high-frequency coil (induction coil) is used to generate an electromagnetic field that acts on the object. When the object is exposed to the electromagnetic field, an induced current is generated within it, producing Joule heat that heats the object.
There are several common methods for cooling furnaces. Below, we describe some of the most typical cooling methods.
Natural cooling is a method in which a heating furnace is simply left to cool naturally after the heating process is complete. Since the heat from the furnace is naturally dissipated into the surrounding environment, this is a simple and low-cost cooling method. However, the cooling time may be relatively long.
Forced cooling is a method that uses fans or cooling equipment to increase the cooling rate of a heating furnace. Fans circulate cooling air inside the furnace to efficiently remove heat. This reduces cooling time. Forced cooling is effective for processes where cooling speed is critical or when it is necessary to move quickly to the next step.
Water cooling is a method of cooling a heating furnace using water. The cooling water circulates through cooling channels and pipes inside the furnace, absorbing heat and carrying it away. Water cooling offers high cooling capacity and controllability, and is effective in situations involving high temperatures and high heat loads.
Gas cooling is a method of cooling a heating furnace using gas. Generally, the cooling gas passes through the heating furnace, absorbing heat and thereby cooling it. This method is particularly suitable for high-temperature processes and for cooling specific raw materials. Types of cooling gases include nitrogen, helium, and argon.
The cooling method for a heating furnace is selected based on the raw materials used and the process requirements. We select the appropriate cooling method by taking into account factors such as cooling rate, cooling uniformity, and energy efficiency.
A batch-type heating furnace is a system that heats a fixed amount of raw material (a batch) at a time. The raw material is loaded into the furnace, undergoes a series of heating processes, and is then removed. The heating time and temperature can be adjusted for each process. Operation is required for each batch, and the amount of raw material that can be processed at one time is limited. It is possible to change the conditions for each processing cycle.
A continuous heating furnace is a system in which raw materials are fed continuously and heated at a constant rate. The raw materials pass through the furnace and are processed as they move through a series of heating zones. Because of the continuous feeding and discharge, this method offers higher productivity than batch-type furnaces. The heating time and temperature remain constant, ensuring consistent quality throughout the entire process.
A tubular furnace is a type of furnace in which raw materials are fed through a long tube that is heated from the outside. The raw materials flow at a constant speed and pass through the heating zone. Tubular furnaces are a type of continuous heating furnace, enabling continuous feeding and consistent quality. Furthermore, by controlling the shape of the tube and the flow of the raw material, specific reactions and heat treatments can be achieved.
A lift-type heating furnace is a system that heats raw materials using a lift-type platform equipped with a heating zone. The raw materials are placed on the platform and heated while being raised or lowered as needed. This method enables uniform heating of the bottom and sides of the raw materials and is well-suited for processing materials with complex shapes or large dimensions.
This method involves heating the raw materials while rotating them. Heating the raw materials while rotating them ensures even heating and uniformity.Click here for more details
Heating equipment for irregularly shaped materials. This specialized heating equipment includes processes such as conveying the materials to the next stage after heating, moving the furnace itself, or retrieving and conveying the materials using robotic arms. View Product Details
This vacuum furnace is designed for drying ceramic raw materials, as well as for firing and drying special metals.View Product Details
This is a mesh belt oven designed for the continuous drying and firing of irregularly shaped materials.View Product Details
We provide energy-saving, high-efficiency continuous annealing equipment that enables bright annealing in an inert atmosphere by directly reducing and burning enameled or aluminum wire with fuel gas. View Product Details
We offer an energy-efficient, high-speed enameled wire baking furnace that operates by combining a direct-fired burner with a catalytic combustion heat recovery system. View Product Details
This is a high-temperature vertical heating furnace (crucible type) equipped with carbon heaters. View Product Details
This is a comprehensive system that combines a furnace and a conveyor system. We can also design conveyor systems to transport materials between heating furnaces. View Product Details
We can design and manufacture gas-fired exhaust systems. View Product Details
This is a preset-type device that uses touch panel controls to determine the opening of the gas and air control dampers to regulate the air-fuel ratio. View Product Details
We can conduct validation tests for equipment installation based on your heat treatment needs, whether for research and development purposes (such as product improvement or the development of next-generation powders) or to evaluate the feasibility of implementing a rotary kiln system.
Demonstration Tests and Trials
We are performing maintenance on the equipment we have installed. Please let us know whenever you need service, whether it’s every six months or annually. We can tailor our proposals to meet your specific needs, whether you require us to dispatch only a supervisor or include field technicians.
Furnace temperature measurement is primarily performed by either installing a temperature sensor inside the furnace or using a non-contact method, such as an infrared thermometer. The control system is connected to the temperature sensor and performs automatic control based on the data it provides.
There is a wide variety of heating furnaces, including heating furnaces and vacuum furnaces. They vary in terms of temperature, size, materials used, and atmosphere. We provide custom-built equipment and facilities tailored to our customers’ needs.
The heating furnace itself cannot be made explosion-proof. However, it is possible to select explosion-proof versions of some instrumentation and other equipment.
We have a small-scale test furnace. We conduct tests while taking the customer’s specific requirements into account. We perform tests under various conditions, including the required sample quantity, temperature, and atmosphere. The testing facility is located at our headquarters in Itoigawa City, Niigata Prefecture.
We have a track record of delivering products to various countries. For heating furnaces, most of our projects have been in Asia, though we also have a track record in the United States and France.
The furnace atmosphere is primarily atmospheric or inert. We can accommodate gases such as argon and nitrogen.
We provide maintenance support. We conduct semi-annual and annual inspections based on our recommendations and in accordance with our customers’ requests. If your business or factory has its own equipment maintenance staff, we may dispatch only our instructors to work collaboratively with your team. We also offer support that includes your own staff.
In terms of our track record, the largest unit we have ever manufactured—though it was assembled in sections—was a disc-shaped heating furnace measuring 17 m × 11 m × 2 m (H). This system involves placing the items to be processed in a designated location, then installing boxes equipped with heaters so that they cover the items from above, and finally connecting the sections together. Since heating furnaces come in a wide variety of specifications, we listen carefully to our customers’ needs and provide the most suitable solution.
HEATING FURNACEHeating Furnace
Superheated Steam Cleaning and Degreasing System for Metal Chip Briquettes
Conveyor System
Direct-Combustion Deodorization Furnace (Burner Type) for Exhaust Gas Treatment
Vacuum Furnace
Firing Kiln
Vertical High-Temperature Furnace (Large)
Vertical High-Temperature Vacuum Furnace (Small)
Automatic Conveyor-Type Heating Furnace
Air-Fuel Ratio Control Device
Annealing Furnaces (for the Production of Enameled Wire and Aluminum Wire)
Superheated Steam Mesh Belt Oven
CONTACT
Tanabe: World-Renowned for Its Thermal Technology
Please feel free to contact us.