I. Furnace top part
Furnace roof, also known as the furnace cover, is domed, can be moved, the outer ring for the water jacket steel structure, in the smelting process, the roof (especially the center part of the roof, electrode holes and dust holes around the hole) is in a long-term high temperature, but also subject to the effects of sudden changes in temperature, furnace gas and slagging powder chemical erosion, the electrode arc radiation and soot scouring, the roof of the dust also produces pressure and impede the dissipation of heat, the roof of the furnace in the lifting and rotating also The roof is also subject to mechanical vibration when lifting and rotating, the working conditions are very poor, is the weak link of the whole furnace lining.
II. Furnace wall area
Furnace wall does not touch the steel in the steelmaking process and plays a role of heat insulation for the steel. The main causes of damage to the furnace wall: splash slag, electrode arc light, high temperature air wash, air oxidation, thermal vibration.
Electric Arc Furnace Structure
III. Slag line parts
The slag line is between the furnace wall and the melt pool. During the steel making process, after the steel melting, the lower part of the slag line of the furnace wall is in the erosion of high temperature steel slag for a long time. Physical penetration and chemical erosion of steel slag, as well as through the flow of steel slag, the scouring of molten steel and air oxidation, resulting in the formation of deep concave grooves in this part of the refractory material ahead of other parts.
IV. Molten pool part
The melt pool is located between the slag line and the bottom of the furnace. In the electric arc furnace steelmaking process, it is mainly used to store molten steel. By the physical penetration and chemical erosion of steel and slag, as well as through the flow of steel slag, steel scouring effect, each part of the erosion is relatively uniform.
V. Bottom part of the furnace
The bottom of the furnace mainly stores steel, subject to flowing slag, steel scouring and penetration.
Lining Chart
VI. Furnace door frame area
Furnace door is mainly for discharging slag, blowing oxygen, adding all kinds of materials; observing and detecting the state of the furnace and the temperature of molten steel, physical penetration of steel slag and chemical erosion, oxidation, thermal vibration are the main causes of damage.
electric arc furnace for making steel
VII. Steel outlet area
The same damage mechanism as in the slag line area increases the steel scouring.