YiranPush steel continuous heating furnaceThe equipment adopts a reasonable temperature and heating system, regenerative combustion technology, and flue gas waste heat recovery technology to reduce the rated heating temperature and exhaust gas emission temperature of the furnace, improve the thermal energy utilization rate of the combustion products in the furnace, increase the waste heat recovery rate, reduce heat loss, PLC intelligent control of furnace temperature and pressure, reduce equipment investment, and lower maintenance and operation costs. The gas push steel continuous heating furnace mainly heats steel grades such as ordinary steel and low-alloy steel, as well as high-quality carbon steel and high alloy steel. In the Yiran energy-saving push steel continuous heating furnace, the furnace can be continuously heated, and the billet is loaded from the lower temperature furnace tail. The heating furnace moves towards the higher temperature furnace head at a certain speed under the action of machinery, and moves in the opposite direction of the hot gas in the furnace. When the billet is heated to the required temperature of the process, it is continuously discharged from the furnace.

There are three commonly used types of push type continuous heating furnaces: two-stage, three-stage, and intensified heating

1. Two stage push steel continuous heating furnace

The two-stage push steel continuous heating furnace is divided into heating period and preheating period according to the furnace temperature system, and the furnace is correspondingly divided into heating section and preheating section. Small furnaces for heating thin billets also have single-sided heating, usually double-sided heating. When burning coal, there is a combustion chamber at the end, and the lower heating combustion chamber is located on both sides, forming a waist furnace. A two-stage push steel continuous heating furnace with double-sided heating. I thought the furnace gas below was going to float upwards, and some of the gas had gaps on both sides, causing insufficient heat supply to the lower part; Secondly, the cooling water under the steel billet needs to take away a large amount of heat, and almost all of this heat needs to be supplied by the heating below; In addition, black marks should be generated at the contact area between the steel billet and the water pipe. If the lower heating capacity is insufficient, the black marks will be even more severe. When reaching the solid section, only the upper surface can be heated, so more fuel needs to be supplied for the lower heating.

2. Three stage push steel continuous heating furnace

The three-stage push steel continuous heating furnace adopts a three-stage temperature system of preheating period, heating period, and soaking period in the heating system. The structure of the forging heating furnace is also divided into preheating section, heating section, and homogenization section. Generally, there are three heating points and an upper heating point Heating in the lower heating and equalization sections. The heating of steel and alloy steel with larger cross-sectional dimensions often adopts a three-stage push steel continuous heating furnace temperature system. There are many variations in the types of three-stage heating furnaces, but there are still some common basic points in their structure. The variation of the furnace top contour curve is significant, which is roughly consistent with the furnace temperature curve. The furnace top is also higher in areas with high furnace temperature, and correspondingly lower in areas with low furnace temperature. There is a noticeable transition between the heating section and the preheating section, with the furnace top pressing down towards the preheating section. This is to avoid a lot of heat radiating from the high-temperature area of the heating section to the low-temperature area of the preheating section. The heating section is the main combustion area with a relatively large space, which is conducive to radiative heat transfer. The preheating section is the area for waste heat utilization, and lowering the furnace top reduces the space, which is conducive to strong convective heat transfer. However, some furnaces focus on strengthening heating, extending the heating section relatively, and the boundary between the heating section and the preheating section is not very clear.