Sep. 09, 2025
The water-cooled cover of an electric arc furnace is a crucial component of the EAF. It utilizes water cooling technology to protect the roof from damage caused by high temperatures.
The design of the water-cooled roof effectively reduces roof temperatures, thereby extending its service life and reducing maintenance costs. Due to the extremely high temperatures inside the electric arc furnaces,water cooling technology is crucial for the stable operation of the steelmaking electric furnace.
Different roof designs can affect EAF efficiency and smelting quality. For example, the roof shape and the layout of the water cooling channels can affect heat transfer and gas flow.
Cooling Efficiency and Furnace Temperature Control: The roof removes a significant amount of heat through the water cooling channels, reducing the roof surface temperature and preventing local overheating. A stable roof temperature helps maintain a consistent gap between the roof and the casting, minimizing thermal deformation that interferes with the reaction zone.
Impact of Heat Loss on Efficiency: Excessively high furnace roof temperatures increase thermal radiation and convection losses, reducing power utilization per unit time. A reasonable cooling design can minimize unnecessary heat loss while ensuring safety, thereby increasing smelting output per unit power.
Effect of temperature on arc behavior: If the temperature in the furnace cover area is uneven or too high, it may cause changes in gas volume and local density differences, which in turn affect the stability of the plasma column and the distribution of the arc column.
Gap and Discharge Efficiency: Thermal expansion of the furnace roof, which causes changes in furnace chamber geometry, can alter the discharge gap distribution, affecting arc stability and average voltage drop, ultimately impacting melting efficiency and energy consumption.
Influence of the Furnace Roof on Furnace Chamber Airflow: Different water cooling channel layouts affect the gas flow pattern beneath the furnace roof and the distribution of the smelting atmosphere (e.g., oxygen content, reducing properties, etc.) within the furnace. Appropriate design can improve gas renewal rates, enhance smelting efficiency, and improve the uniformity of the steel/alloy.
Management of Molten Pool Coverage and Steam/Radiant Heat: A properly designed cooling system can reduce the amount of heat returned to the furnace by radiation, minimizing disturbances to the furnace's melt pool temperature field. This stabilizes the alloy composition distribution and improves the consistency of finished product quality.
Cooling Water Flow and Pump Power: The cooling system requires a certain amount of energy to circulate water. Excessively high water flow rates increase energy consumption, while excessively low flow rates can lead to elevated furnace roof temperatures, safety risks, and increased maintenance costs. Optimized cooling parameters ensure the safety of the furnace roof while minimizing energy consumption per unit of smelting output.
Heat Recovery Potential: Some system designs can reuse heat removed from the furnace lid for secondary preheating or other process steps, improving overall energy efficiency.
Temperature Control and Material Fatigue: Stable and uniform cooling helps reduce the risk of thermal fatigue, cracking, and deformation, thereby extending furnace roof life, reducing replacement frequency, and improving overall efficiency (increasing equipment availability).
Corrosion and Water Quality Management: Poor water quality management in water-cooling systems can easily lead to corrosion and scaling, resulting in reduced cooling efficiency and indirectly impacting furnace efficiency and operating costs.
The EAF water-cooled furnace cover comprehensively determines the efficiency and stability of the steelmaking electric furnace through effective thermal management, indirect impact on arc column stability, control of furnace chamber airflow and heat radiation, and impact on system energy consumption and maintenance costs.
Whether it's electric arc furnaces water-cooled furnace cover or furnace accessories,and any other melting furnace, if you have specific furnace types, production capacity targets, or design requirements, Sanrui Electric Furnace can provide you with professional solutions and quotes.
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The 5 ton electric arc furnace for steel-making is a special purpose equipment that makes ordinary steel, quality carbon steel, alloy steel and non-corrosive steel with electric arc as heat source and scrap steel (iron) as raw material.
15-ton electric arc furnace is used for the short-process steelmaking process, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 30-ton AC electric arc furnace is used to melt scrap steel to produce steel. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode.
30 Ton electric arc furnace is used for steelmaking short process smelting, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 50-ton ultra-high power electric arc furnace (50TUPH EAF) adopts ultra-high power, high impedance technology, bottom tapping technology (ETB), furnace wall oxygen oil burner and furnace door carbon-oxygen gun technology.
DC electric arc furnace is an electric arc furnace supplying electric energy with DC power supply. There is only one electrode on the top of the DC arc furnace, which is the negative electrode, and the bottom electrode is the positive electrode.
Electric arc furnaces are used to melt scrap steel for steel production. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode. The heat generated by the arc melts the scrap.
Electric arc furnace steel making is a steelmaking method that uses the thermal effect of electric arc to heat the charge for melting.
Ultra-high power electric arc furnace mainly changes the arc characteristics of high voltage and long arc to the arc characteristics of high current, low voltage and short arc
1 ton electric arc furnace is used for melting steel and titanium scrap metal. The principle of electric arc furnace is based on the generation of direct current, which converts electrical energy into heat energy through electrodes to melt the metal.
The closed pig iron furnace (submerged arc furnace iron making) is a non-blast furnace iron making method. Under the premise of guaranteeing the power supply, it is easy to solve the problem by using the reducing agent required by the submerged arc furnace iron making.
The main mechanical device design of Sanui ferroalloy refining furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The Ferronickel submerged arc furnace is a special submerged arc furnace used for smelting nickel-iron alloy. Its main function is to add nickel ore, carbonaceous reducing agent (such as coke) and limestone and other raw materials into the furnace in a certain proportion
The main mechanical device design of Sanui ferrosilicon furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The main mechanical device design of Sanui high carbon ferrochrome furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
Industrial silicon submerged arc furnace is an important equipment in silicon ore processing, playing a key role in the silicon industry.
The manganese silicon alloy furnace is mainly used to smelt silicon-manganese alloy, which is an alloy containing silicon and manganese.
The design of the submerged arc furnace main mechanical device by Sanui is based on China's national conditions and draws on international advanced technologies such as Demark and Perlmutter.
Submerged electric arc furnace is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc.
Titanium slag production adopts titanium slag electric furnace (circular furnace and rectangular furnace according to its shape) smelting process.
The LF 20 T ladle refining furnace has the functions of arc heating under normal pressure, argon blowing and stirring at the bottom of the ladle, and reducing slag making in the ladle.
LF ladle refining furnace is a bottom-blown argon ladle furnace with three-phase submerged arc heating under normal pressure. It is a device for refining molten steel in a ladle.
VD vacuum refining furnace is a commonly used refining process equipment, mainly used for deoxidation, impurity removal and other operations of molten steel, so as to obtain high purity, low impurity content of high quality steel.
VOD vacuum refining furnace has multiple functions such as vacuum degassing, oxygen blowing decarburization, vacuum charging, argon blowing stirring, non-vacuum temperature measurement sampling, wire feeding, etc.
The cast steel melting induction furnace has outstanding advantages in heat penetration or melting soft magnetic alloys, high resistance alloys, platinum group alloys, heat-resistant, corrosion-resistant, wear-resistant alloys and pure metals.
Metal silicon smelting furnace is a metal silicon medium frequency melting furnace, which consists of furnace body, water and electricity introduction system, furnace tilting device, etc. It has fast melting temperature rise, easy to control furnace temperature and high production efficiency.
Medium frequency induction furnace mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, zinc, etc. The customized range of induction furnaces sold by Sanrui ranges from 0.1 tons to 10 tons.
Medium frequency induction furnaces are mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, and zinc.
Medium frequency aluminum melting furnace is used for melting and heating aluminum, scrap aluminum, aluminum ingots, and aluminum alloys; The melting capacity ranges from 100KG to 3000KG.
An induction furnace is an electric furnace that uses the induction electrothermal effect of the material to heat or melt the material. The main components of an induction furnace are sensors, furnace body, power supply, capacitors and control system.
The 3-ton medium frequency coreless induction furnace adopts a 6-phase 12-pulse double rectifier control system. A 2000KVA special rectifier transformer is used for the 2000KW medium frequency power supply.
The conductive arm of an electric arc furnace (EAF) is primarily composed of the front electrode conductive arm holder, a water-cooled clamping ring, the arm body, and the rear conductive copper plate.
The scrap charging basket of the electric arc furnace is mainly used for loading and conveying raw materials such as scrap steel into the electric arc furnace for smelting.
There are many insulation links between the EAF electrode holder and the conductive cross arm body, which greatly simplifies the cconductive cross arm structure and is a new type of electrode arm on the ultra-high power arc furnace.
Generally, the furnace cover of the electric arc furnace adopts the tubular water-cooled closed tube furnace cover structure.
The electrode lifting mechanism of electric arc furnace is composed of conductive cross arm and electrode column device.
Forged copper tile is one of the main accessories in submerged arc furnace (silicon metal furnace, calcium carbide furnace and iron alloy furnace). It generates heat energy due to passing through large current at high temperature, and is easy to be damaged due to poor working environment.
The furnace cover lifting and rotating device consists of a furnace cover lifting mechanism, a rotating mechanism and a rotating frame.
Submerged arc furnace pressure ring is used to monitor the change of air pressure in the furnace in real time, and adjust the air pressure automatically or manually according to the preset parameters to ensure the stability of air pressure in the furnace
Submerged arc furnace water-cooled Roof is an important part of submerged arc furnace (also known as electric arc furnace, calcium carbide furnace or mining furnace), which is mainly used to close the top of furnace body and bear the high temperature and pressure in the furnace.
Short network bus systems), also known as high current line, refers to the general term of the carrier fluid from the secondary outlet terminal of the transformer to the electrode (including the electrode).
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