What is a Indirect roasting furnace? Introduction to the principle of heating furnace structure

Indirect roasting 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.，it is mainly composed of combustor, recovery of waste heat, convection chamber, furnace chamber and ventilation system，Indirect roasting furnaceSimple structure and reliable operation.。The following is to introduce the Indirect roasting furnace:

1、Brief introduction of Indirect roasting furnace

Indirect roasting furnaceIt is a kind of equipment which uses gas as fuel and is specially used for heating metal before forging.，the main features are Easy to maintain, Easy to maintain, Strong adaptability, energy saving and environmental protection and energy-efficient，It has a wide range of uses, including Improve production efficiency, Metal melting and casting, Metal heat treatment, Energy conservation and environmental protection and Metal tempering。

Indirect roasting furnace

2、Indirect roasting furnace principle

Indirect roasting furnacethe principle is simple.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 a kind of equipment which uses gas as fuel and is specially used for heating metal before forging.。

Indirect roasting furnace

3、Structural characteristics of Indirect roasting furnace

The Indirect roasting furnace structure is introduced as follows:

1. furnace chamber

A space for holding metallic materials for heating.

2. 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.

3. Radiation chamber

The heat load of the main place for Indirect roasting 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.

4. 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.

5. ventilation system

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

Indirect roasting furnace

4、Indirect roasting furnace real beat

Beautiful design, excellent material selection and excellent quality.。

Indirect roasting furnace

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

5、Indirect roasting furnace function

Indirect roasting furnaceit has the functions of temper, normalizing, Forging heating, heat treatment and Casting heating，at work,Heat of combustion based on fuel. Fuel gas (such as natural gas, liquefied petroleum gas, etc.) is mixed with combustion-supporting air through the burner and burned to produce high-temperature flame and flue gas. These high-temperature flames and smoke exchange heat with metal materials in the furnace, so that they gradually heat up to the temperature required for forging.，the advantage is The metal material can be heated to the required temperature in a short time, and the production efficiency is improved.、Adopting advanced combustion technology and materials, it has a long service life and low maintenance cost.、Efficient combustion and waste heat recovery system can significantly reduce energy consumption, thus reducing operating costs.、Using regenerative combustion system or advanced burner design can realize the uniform distribution of temperature in the furnace, ensure the uniform heating of metal materials and improve product quality.、It can improve the plasticity and fluidity of metal materials, reduce the difficulty and cost of forging, and improve product quality and production efficiency.，is a popular Indirect roasting furnace，favorable price。

Indirect roasting furnace

Indirect roasting furnaceUsually 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.、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.、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.、Suitable for forging and heating of various metal materials, including steel, aluminum and copper. At the same time, it can also be used in metal heat treatment, tempering and other technological processes.、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 functions of quench, anneal, Casting heating, heat treatment and normalizing，the product looks beautiful.。