Introduction to Double pass annealing furnace and Forging furnace structure principle

Double pass annealing furnaceIt is a forging heating device using gas as fuel.，is a Double pass annealing furnace，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.，customizable。The following is to introduce the Double pass annealing furnace:

1、Brief introduction of Double pass annealing furnace

Double pass annealing furnaceIt is an efficient, energy-saving and environment-friendly metal heating device.，the product looks beautiful.，Efficient combustion and waste heat recovery system can significantly reduce energy consumption, thus reducing operating costs.、Natural gas is mainly used as fuel, but some equipment also supports other types of gas or liquid fuel, which has strong fuel adaptability.、It can improve the plasticity and fluidity of metal materials, reduce the difficulty and cost of forging, and improve product quality and production efficiency.、Adopting advanced combustion technology and control system can realize full combustion of natural gas and improve combustion efficiency. At the same time, some equipment is also equipped with waste heat recovery system, which can further recycle the waste heat in exhaust smoke and improve energy utilization efficiency.、Usually equipped with intelligent control system, it can automatically adjust the parameters such as gas supply and air flow according to the heating demand, and realize accurate control of the temperature and atmosphere in the furnace.，it can be used in surface treatment, electron, light industry, chemical industry, heat treatment and other industries，is carefully developed by One-combustion energy saving combined with advanced technology。

Double pass annealing furnace

2、Structural characteristics of Double pass annealing furnace

The Double pass annealing furnace structure is introduced as follows:

1. ventilation system

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

2. Radiation chamber

The heat load of the main place for Double pass 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.

3. furnace chamber

A space for holding metallic materials for heating.

4. convection chamber

The high-temperature flue gas discharged from the radiation chamber is used for convective heat transfer to further heat the metal materials.

5. 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.

Double pass annealing furnace

3、Double pass annealing furnace characteristics

The Double pass annealing furnace features are as follows:

1. Strong adaptability

The Double pass annealing furnace can be used for forging and heating of bar, round steel, square steel, steel plate and other metal materials, and has a wide range of applications.

2. Efficient heating

The Double pass annealing furnace can heat the metal material to the required temperature in a short time and improve the production efficiency.

3. energy saving and environmental protection

As a clean energy source, natural gas produces less pollutants after combustion, which is beneficial to environmental protection. At the same time, the application of waste heat recovery system further improves the energy utilization efficiency.

4. Stable and reliable

The Double pass annealing furnace has a stable combustion system and temperature control system, which can ensure the uniformity and stability of the temperature in the furnace, thus improving the quality and production efficiency of forged products.

5. Efficient heating

The Double pass annealing furnace can heat the metal to the required forging temperature in a very short time, reducing the loss caused by the oxidation of the metal.

Double pass annealing furnace

4、Double pass annealing furnace function

Double pass annealing furnacemultifunctional, with functions such as Forging heating, temper, normalizing, Casting heating and anneal，the advantage is Uniform heating and precise control can be realized, so it is helpful to improve the product quality and yield of metal materials.、The user interface is friendly, and the operator is easy to use. At the same time, the equipment also has the function of fault diagnosis and alarm, which can find and deal with abnormal situations in time.、It has the advantages of high heating efficiency, high energy utilization, accurate temperature control, good environmental protection performance, simple operation and strong adaptability.、Adopting advanced combustion technology and materials, it has a long service life and low maintenance cost.、Uniform heating and precise control can be realized, so it is helpful to improve the product quality and yield of metal materials.，be loved by our customers.。

Double pass annealing furnace

5、Working principle of Double pass annealing furnace

Double pass annealing furnaceat runtime,The high-temperature flame and flue gas generated by burning gas (such as natural gas and liquefied petroleum gas) in the furnace are used as heat sources to heat metal materials.，It is a kind of heating equipment using natural gas as fuel, which is mainly used to heat metal materials to the required forging temperature in a short time.，The structural design is simple, novel and special.，Structure consists of recovery of waste heat, combustor, Radiation chamber, recovery of waste heat, ventilation system and so on，the advantage is Efficient combustion and waste heat recovery system can significantly reduce energy consumption, thus reducing operating costs.、It can improve the plasticity and fluidity of metal materials, reduce the difficulty and cost of forging, and improve product quality and production efficiency.、Natural gas is used as a heat source, resulting in less waste gas and smoke after combustion, and less pollution to the environment. This will help reduce industrial emissions and improve the atmospheric environment.、Adopting advanced combustion technology and control system can realize full combustion of natural gas and improve combustion efficiency. At the same time, some equipment is also equipped with waste heat recovery system, which can further recycle the waste heat in exhaust smoke and improve energy utilization efficiency.、The metal material can be heated to the required temperature in a short time, and the production efficiency is improved.，is designed by One-combustion energy saving with advanced technology。

Double pass annealing furnace

Double pass annealing furnacethe main features are Strong adaptability, Stable and reliable, Easy to maintain, Easy to control and energy-efficient，Widely used in Improve production efficiency, Metal heat treatment, Metal forging heating, Energy conservation and environmental protection and Metal tempering，is a common Double pass annealing furnace。