Tempering Furnaces

Tempering furnaces are highly specialized furnaces used to heat various materials to very high temperatures; to alter hardness and strength properties differently. With this application, internal stresses are relieved, thus ensuring a more homogeneous structure of the material. These furnaces are predominantly used in the steel production sector.

Tempering Furnace

A tempering furnace is a type of industrial oven used to perform thermal processes on metal and other materials. The tempering process is applied to change various properties of metal parts, including altering, hardening, softening, relieving stresses, or achieving other desired characteristics.

Heaters Used in Tempering Furnace

• Kanthal Heaters: Kanthal is known as a type of heater wire made of nickel-chromium alloy. It is resistant to high temperatures and is commonly used in tempering. Kanthal heaters are placed inside the furnace and convert electrical current circulating around metal parts into heat.
• Tubular Heaters: Tubular heaters consist of wire coils placed inside metal tubes. These tubes are used to distribute heat inside the furnace and are typically positioned around metal parts.
• Mo-Re (Molybdenum-Rhenium) Heaters: Mo-Re heaters are used as a type of heater wire that exhibits stable performance, especially at high temperatures, and is resistant to oxidation.
• Platinum Heaters: Platinum heaters are used in applications requiring high precision. They are resistant to high temperatures and provide precise temperature control.

Technical Specifications of Tempering Furnaces

• Power Range: Can range from 1 kW to 1000 kW.
• Voltage: Can have a voltage range from 12 Volts to 480 Volts.
• Temperature Resistance: Can withstand temperatures from 100°C to 1200°C.
• Material Options: Nickel-chromium, stainless steel, iron-chromium-aluminum, or similar durable materials can be used.
• Diameter Range: Can vary from 6 mm to 25 mm.
• Length: Can have a length range from 500 mm to 3000 mm.
• Connection Types: Nutted, bolted, or different connection types can be used.
• Thermocouple Types: J, K, T, E, or other thermocouple types can be preferred.
• Heating Element Type: Various heating element types such as wire-wound, mica-band, or ceramic-insulated can be found.
• Cooling Method: Air-cooled or water-cooled options can be preferred.
• Protection Class: IP65 or higher protection classes can be preferred.
• Mounting Type: Flanged, bolted, or different mounting types can be used.

Applications of Tempering Furnaces

• Metal Processing Industry: Tempering furnaces are widely used in the metal processing industry for processes such as hardening, annealing, normalizing, and modifying properties of metal parts.
• Automotive Industry: In the automotive sector, tempering furnaces are used for hardening and shaping engine parts, transmission components, axles, and other metal parts.
• Aerospace Industry: In the aerospace industry, tempering furnaces are used for hardening and enhancing the durability of engine parts, propellers, fuselage parts, and other critical components.
• Machine Manufacturing: In the machine manufacturing industry, tempering furnaces are needed for hardening and increasing the durability of gears, shafts, bearings, and other metal parts.
• Energy Sector: In the energy sector, tempering furnaces are used to enhance the durability of pipelines, valves, turbine parts, and other energy equipment.
• Mold Industry: In the mold industry, tempering furnaces are used for hardening, shaping, and increasing the durability of casting molds.
• Medical and Healthcare Industry: In the medical and healthcare industry, tempering furnaces are required for the thermal processing of metal parts used in the production of surgical instruments, implants, and other medical devices.

Advantages of Heater for Tempering Furnace

• High Precision: Heaters offer high precision in temperature control. This ensures that processed metal parts meet the desired specifications and enhances quality.
• Flexibility: Heater for tempering furnaces provides a flexible solution for processing metal parts of different shapes and sizes, accommodating various industrial applications.
• Controlled Cooling: Tempering furnaces not only heat but also allow controlled cooling. This helps achieve the desired hardness and durability of metal parts.
• Environmentally Friendly: With energy efficiency and controlled processing processes, heaters for tempering furnaces are environmentally friendly. They reduce environmental impact with lower energy consumption and waste production.
• Production Continuity: Tempering furnaces ensure continuous production continuity. With low failure risk and high performance, they offer uninterrupted production capability.
• Heat Distribution: Heaters provide homogeneous heat distribution within the furnace. This ensures that every point of the processed metal parts is heated equally, enhancing product quality.

Technical Details to Consider When Choosing Heater for Tempering Furnace

• Heat Distribution: The heat distribution provided by the heater should be homogeneous. Even heat distribution enables better cooking and tempering of products inside the furnace.
• Energy Efficiency: Choosing an efficient heater can reduce energy consumption and lower operating costs. Heaters with high efficiency can provide the same performance with less energy consumption.
• Protective Coating or Insulation: It is important for the outer surface of the heater to be coated with an appropriate protective coating or insulated. This helps protect parts in contact with electricity.
• Proper Connections: The heater should have suitable terminals or connection points for easy connection to the furnace circuit. Proper connections enhance electrical circuit safety and performance.
• Temperature Control and Balancing: The heater should have an appropriate balancing system to control the temperature inside the furnace. This is important for maintaining the desired temperature range.
• Proper Sizing: The heater should be of appropriate size to fit inside the furnace. It should be compatible with the internal volume and configuration of the furnace.
• Compliance with Safety Standards: It is important for the heater to comply with international safety standards. This is crucial for electrical safety and user protection.