CN205024288U - Horizontal annealing stove heating section structure - Google Patents

Abstract

The utility model discloses a heating section structure of a horizontal annealing furnace, comprising a furnace body, one side of the furnace body is connected with the preheating section, and the other side is connected with the connecting section; multiple groups of furnace rollers of the same height are arranged in the furnace body , the steel strip is held up by the furnace roll; the upper and lower sides of the furnace roll are provided with a burner group consisting of a plurality of burners, the burners include horizontally arranged nozzles, and nozzles are arranged on the nozzles, and each group of burners The nozzles are parallel to each other; the burner groups on both sides of the furnace roller are arranged at intervals; each upper and lower burner group forms a combustion zone. The utility model has the advantages that: because the burner groups are arranged at intervals, the crystal grains generated when the internal metallographic structure of the metal undergoes phase transformation during the heating process are relatively uniform, so the mechanical properties of the strip steel can be improved, and the surface quality of the strip steel can be improved. It can also be improved; the partition design of the heating section can evenly heat the strip steel, and can also adjust the temperature of the strip steel plate by controlling the production running speed and the temperature in the furnace, so as to realize the continuous full-load production of the unit and improve the production efficiency.

Description

A heating section structure of a horizontal annealing furnace

technical field

The utility model relates to the field of mechanical equipment, in particular to a heating section structure of an annealing furnace.

Background technique

In the production process of stainless steel strip, annealing treatment is required. The strip steel heated in the annealing furnace needs to be cooled by the air cooling section. The existing air cooling section has a relatively simple structure and does not consider the influence of the temperature gradient in the furnace and the cooling method on the strip steel. Therefore, the performance of the stainless steel strip steel is affected. .

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a heating section structure of an annealing furnace, which is not only simple in structure, but also comprehensively considers the influence of temperature gradient and heating method on the strip steel. The specific technical scheme is as follows:

A heating section structure of a horizontal annealing furnace, including a furnace body, one side of the furnace body is connected to the preheating section, and the other side is connected to the connecting section; multiple sets of furnace rollers of the same height are arranged in the furnace body, and the steel strip is formed by The furnace roll is held up; the upper and lower sides of the furnace roll are provided with a burner group composed of a plurality of burners. The burners include horizontal nozzles, and nozzles are arranged on the nozzles. Parallel; the burner groups on both sides of the furnace roller are set at intervals; each upper and lower burner group forms a combustion zone, from the preheating section to the connecting section, which is sequentially divided into zones 1-7, and a convection fan is installed on the top of zone 7.

A cooling structure is arranged inside the furnace roller, and the cooling structure includes a circulation pipeline inside the furnace roller, and the circulation pipeline is connected with the cooling water outside the furnace body.

The utility model has the advantages that: because the burner groups are arranged at intervals, the heating mode of the strip steel becomes the interval mode of direct heating and radiation heating, which changes the single heating mode, such as the single direct heating or the single heating mode of the existing gas annealing furnace. The single radiation heating method of the electric furnace, during the heating process of the metal, the grains generated when the internal metallographic structure undergoes phase transformation are relatively uniform, so the mechanical properties of the strip can be improved, and the surface quality of the strip can also be improved; in addition, 1 Zones 1 to 4 are continuous heating zones, and zones 5 to 7 are heat preservation zones. The airflow in the furnace flows from zone 7 to zone 1, so that the temperature in the furnace increases in a uniform gradient. After the strip passes through the preheating zone, the temperature in the heating zone can be rapidly increased The target temperature of annealing is reached, and the continuous production of coils is realized. The partition design of the heating section of this horizontal furnace can not only heat the strip uniformly, but also adjust the temperature of the strip steel plate by controlling the production speed and the temperature in the furnace, so as to realize the continuous full-load production of the unit and improve the production efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

The utility model is described in detail below in conjunction with the accompanying drawings. As shown in Figure 1, the utility model comprises a body of heater 1, and one side of the body of heater 1 is connected with the preheating section 2, and the other side is connected with the connecting section 3; Multiple groups of furnace rolls 4 of the same height are arranged in the body, and the steel strip 6 is held up by the furnace rolls 4; a burner group composed of a plurality of burners 5 is arranged on the upper and lower sides of the furnace roll 4, and the burners 5 include horizontally arranged Nozzles, nozzles are set on the nozzles, and the nozzles of each group of burners 5 are parallel to each other; the burner groups on both sides of the furnace roll 4 are arranged at intervals; each upper and lower burner groups form a combustion zone, from the preheating section to The connecting section is in sequence 1-7 areas, and a commutation fan 7 is also set on the top of the 7 areas;

A cooling structure is arranged inside the furnace roller 4, and the cooling structure includes a circulation pipeline inside the furnace roller, and the circulation pipeline is connected with the cooling water outside the furnace body.

Claims (2)

1. a Horizental annealer heating zone structure, is characterized in that: comprise body of heater, and described body of heater side is connected with preheating section, and side is connected with linkage section in addition; Arrange many groups furnace roller of sustained height in described body of heater, steel band is held up by furnace roller; The both sides up and down of furnace roller all arrange the burner group of multiple burner composition, and described burner comprises horizontally disposed jet pipe, and described jet pipe arranges spout, and the jet pipe often organizing burner is parallel to each other; The burner group interval of furnace roller both sides is arranged; Each upper and lower burner group forms a combustion zone, is followed successively by 1-7 district from preheating section to linkage section, also arranges change of current fan at the top in 7th district.

2. Horizental annealer heating zone structure according to claim 1, it is characterized in that: arrange cooling structure in described furnace roller, described cooling structure comprises the circulation line in furnace roller, and described circulation line is connected with the water coolant outside body of heater.