Electric Annealing Furnace-Bogie Hearth Furnace-Industry Heat Treatment Furnace


Electric Annealing Furnace-Bogie Hearth Furnace-Heat Treatment Furnace: An Essential Tool for Heat Treatment in Manufacturing

Electric annealing furnaces represent a critical technological advancement in the field of material science and industrial manufacturing. By providing precise temperature control and uniform heating, electric annealing furnaces facilitate the alteration of material properties to achieve desired strength, hardness, and ductility. This article delves into the operational principles, design considerations, and applications of electric annealing furnaces, highlighting their importance in modern industry.

Annealing is a heat treatment process that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable. An electric annealing furnace is a type of furnace that uses electric energy to generate the required heat for this process. The growing demand for high-quality, precision-engineered materials across various industries has underscored the importance of electric annealing furnaces.

Operational Principles: Electric annealing furnaces-bogie hearth furnace function by passing an electric current through heating elements, which convert electrical energy into heat. The heat is then transferred to the material within the furnace, either through radiation, convection, or conduction. These furnaces are designed to reach the specific temperatures required for annealing different materials, including metals, glass, and semiconductors, and can be programmed to control the heating and cooling rates precisely.

Design Considerations: When designing an electric annealing furnace, several factors must be considered to ensure efficiency and effectiveness:

1. Temperature Uniformity: Achieving a uniform temperature within the furnace chamber is essential for consistent material properties.

2. Insulation: High-quality insulation is crucial to minimize heat loss and ensure energy efficiency.

3. Heating Elements: The choice of heating elements, such as nichrome, kanthal, or molybdenum disilicide, depends on the maximum operating temperature and longevity.

4. Control Systems: Advanced control systems are implemented for precise temperature regulation and monitoring.


Electric annealing furnaces are utilized across a multitude of industries:

1. Metallurgy: In metallurgy, electric annealing furnaces are used to relieve internal stresses in metals, soften them for further processing, and improve their microstructure.

2. Glass Manufacturing: The glass industry uses annealing furnaces to remove stresses in glassware after forming.

3. Semiconductor Fabrication: The semiconductor industry employs annealing processes to alter the electrical properties of silicon wafers and other semiconductor materials.


Working Temperature 1200℃ 1400℃ 1600℃ 1700℃ 1800℃
Maximum Temperature 1250℃ 1450℃ 1650℃ 1750℃ 1820℃
Furnace Door Open method Electric control rises to open (Opening status can be modified)
Temperature Rise Rate Temperature Rise Rate Can Be Modify(30℃/min | 1℃/h), Company Suggest 10-20℃/min.
Refractories High purity alumina fiber polymer light material
Loading Platform Capacity 100Kg to 10Ton (Can be modify)
Loading Platform Passes In And Out Electric machinery
Rated Voltage 220V/380V
Temperature Uniformity ±1℃
Temperature Control Accuracy ±1℃
  Heating Elements, Specification Certificate, Heat Insulation Brick, Crucible Pliers, High Temperature Gloves.
Standard Accessories
Furnace Hearth Standard Dimension
Furnace Hearth Dimension Power Rating Weight Appearance Dimension
800*400*400mm 35KW Around 450Kg 1500*1000*1400mm
1000*500*500mm 45KW Around 650Kg 1700*1100*1500
1500*600*600mm 75KW Around 1000Kg 2200*1200*1600
2000*800*700mm 120KW Around 1600Kg 2700*1300*1700
2400*1400*650mm 190KW Around 4200Kg 3600*2100*1700
3500*1600*1200mm 280KW Around 8100Kg 4700*2300*2300
Open Model: Bottom Open;
1.   Temperature accuracy:±1℃ ; Constant temperature:±1℃(Base on Heating zone size ) 。
2.   Simplicity for operation, programmable , PID automatic modify, automatic temperature rise, automatic temperature retaining ,  automatic cooling,unattended operation
3.   Cooling structure: Double Layer Furnace Shell, Air Cooling.
4.   Furnace surface temperature approach the indoor temperature.
5.   double layer loop protection. (over temperature protection, over pressure protection, over current protection, thermocouple protection, Power supply protection and so on)
6.   Importing refractory,excellent temperature retaining effect,high temperature resistance, Tolerance the extreme heat and cold
7.   Furnace hearth materials: 1200℃:High Purity Alumina Fiber Board; 1400℃:High purity alumina (Contain zirconium) fiberboard; 1600℃:Import High Purity Alumina Fiber Board; 1700℃-1800℃:High Purity alumina polymer fiber board.
8.   Heating Elements: 1200℃: Silicon Carbide Rod or Electric Resistance Wire; 1400℃: Silicon Carbide Rod ; 1600-1800℃: Silicon Molybdenum Rod
Bogie Hearth Furnace Can Be Customized.More Details Please Contact Us : [email protected]

Advantages of Electric Annealing Furnaces: Electric annealing furnaces offer several advantages over traditional combustion-based furnaces:

1. Precision Control: They allow for precise control of temperature and heating rates, which is crucial for achieving specific material properties.

2. Energy Efficiency: Electric furnaces can be more energy-efficient, as they convert almost all the electrical energy into heat.

3. Environmental Considerations: They produce fewer emissions, making them a more environmentally friendly option.

4. Scalability: These furnaces can be easily scaled to accommodate different production volumes.

Conclusion: Electric annealing furnaces are indispensable in the realm of material science and industrial manufacturing. Their ability to provide uniform and precisely controlled heat makes them a superior choice for the annealing process. As industries continue to seek enhanced material properties and environmental sustainability, the significance of electric annealing furnaces will undoubtedly persist and grow. The ongoing advancements in furnace technology will further optimize the annealing process, contributing to the development of innovative materials and the evolution of various industrial sectors.