What is a Circular tube continuous annealing furnace? Introduction to the Working Principle of forging furnace

Circular tube continuous annealing furnaceIt is an important heating equipment before metal forging. It uses natural gas as fuel to heat metal materials through high-temperature flame and smoke generated by combustion to meet the requirements of forging process.。

1、Brief introduction of Circular tube continuous annealing furnace

Circular tube continuous annealing furnaceIt is a kind of equipment that uses natural gas as fuel to heat metal materials and make them reach forging temperature.，in the course of work,The high-temperature flame and flue gas generated when the fuel burns in the furnace are used as heat sources to heat the medium flowing in the tube to reach the specified process temperature. Fuel is ejected from the burner and burned, resulting in high-temperature flame and high-temperature flue gas. The high-temperature flame transfers heat to the furnace tube in the radiation chamber through radiation, and then to the medium in the furnace tube. The high-temperature flue gas enters the convection chamber of the heating furnace upward due to the suction force of the chimney or the action of the induced draft fan, and the heat is transferred to the furnace tube in the convection chamber by convection, and then to the medium in the furnace tube.，It has a wide range of uses, and is often used inMetal heat treatment,Metal forging heating,Improve production efficiency,Metal heat treatment,Metal tempering and so on，multifunctional, with functions such as hardening and tempering, normalizing, Casting heating, anneal and quench，widely used inmachinery,petroleum,Machinery manufacturing,surface treatment,light industry and other industries。

Circular tube continuous annealing furnace

2、Circular tube continuous annealing furnace application

Circular tube continuous annealing furnaces have the following purposes.

1. Metal melting and casting

Although it is mainly used for forging heating, some types of Circular tube continuous annealing furnaces can also be used in metal melting and casting processes. This is especially suitable for melting and casting of small or special alloys.

2. Energy conservation and environmental protection

The Circular tube continuous annealing furnace uses clean energy as fuel, which has lower emissions and higher energy efficiency than traditional coal-fired or oil-fired stoves. This is helpful to reduce environmental pollution and realize green production.

3. Metal heat treatment

In addition to forging heating, Circular tube continuous annealing furnaces can also be used for metal heat treatment processes, such as annealing and tempering. These processes can improve the microstructure and properties of metal materials, and improve their service life and mechanical properties.

4. Metal forging heating

The Circular tube continuous annealing furnace can heat the metal material to the temperature required for forging, improve its plasticity and fluidity, and thus facilitate forging. This is very important for the forging of various metal materials.

5. Improve production efficiency

The Circular tube continuous annealing furnace has the advantages of fast heating speed and accurate temperature control, which can improve production efficiency. This is especially important for mass-produced forging workshops.

Circular tube continuous annealing furnace

3、Structural characteristics of Circular tube continuous annealing furnace

The Circular tube continuous annealing furnace has the following structure

1. combustor

The device that mixes natural gas with combustion-supporting air and ejects it is the core component of the heating furnace.

2. Waste heat recovery system

Used to recover the exhaust heat of the heating furnace. There are two kinds of recovery methods, one is to recover by preheating combustion air, so that the recovered heat can return to the furnace again; The other is to use another recovery system to recover heat. The former is called air preheating mode, and the latter is usually called waste heat boiler mode.

3. convection chamber

The material is heated by convection heat transfer of high temperature flue gas discharged from the radiation chamber. Flue gas washes the tube wall of the furnace tube at a high speed to carry out effective convection heat transfer, and its heat load accounts for about 20%-30% of the whole furnace. The convection chamber is generally arranged above the radiation chamber, and some are placed on the ground alone. In order to improve the heat transfer effect, nail head tubes or finned tubes are often used in furnace tubes.

4. ventilation system

Ensure the gas flow in the furnace and maintain the stability of the atmosphere and temperature in the furnace.

5. Radiation chamber

The heat load of the main place for Circular tube continuous annealing furnace heat exchange accounts for about 70%-80% of the whole furnace. The furnace tube in the radiation room conducts heat through flame or high-temperature flue gas, which is mainly radiant heat, so it is called radiation tube.

Circular tube continuous annealing furnace

4、Working principle of Circular tube continuous annealing furnace

Circular tube continuous annealing furnaceat work,The high-temperature flame and flue gas generated when fuel (natural gas) burns in the furnace are used as heat sources to heat the medium flowing in the tube to reach the specified process temperature.，It is an efficient, energy-saving and environment-friendly metal heating device.，The price is relatively low.。

Circular tube continuous annealing furnace

5、Circular tube continuous annealing furnace picture

The following pictures can be used for reference by new and old customers.。

Circular tube continuous annealing furnace

Note: All the pictures in this article were taken by One-combustion energy saving manufacturer.。

6、Circular tube continuous annealing furnace structure composition

The Circular tube continuous annealing furnace structure is introduced as follows:

1. furnace chamber

A space for holding metallic materials for heating.

2. combustor

The device that mixes natural gas with combustion-supporting air and ejects it is the core component of the heating furnace.

3. ventilation system

Ensure the gas flow in the furnace and maintain the stability of the atmosphere and temperature in the furnace.

4. convection chamber

The material is heated by convection heat transfer of high temperature flue gas discharged from the radiation chamber. Flue gas washes the tube wall of the furnace tube at a high speed to carry out effective convection heat transfer, and its heat load accounts for about 20%-30% of the whole furnace. The convection chamber is generally arranged above the radiation chamber, and some are placed on the ground alone. In order to improve the heat transfer effect, nail head tubes or finned tubes are often used in furnace tubes.

5. Waste heat recovery system

Used to recover the exhaust heat of the heating furnace. There are two kinds of recovery methods, one is to recover by preheating combustion air, so that the recovered heat can return to the furnace again; The other is to use another recovery system to recover heat. The former is called air preheating mode, and the latter is usually called waste heat boiler mode.

Circular tube continuous annealing furnace

Circular tube continuous annealing furnaceis a popular Circular tube continuous annealing furnace，it is widely used in metallurgy, building materials, material, shipping, electron and other industries。