Scrap is the main material for EAF steelmaking. Scrap quality has a direct impact on steel quality, cost and furnace productivity. Therefore scrap should meet following requirements before charged. The surface of scrap steel should be clean and less rust, sand and other sundries in scrap will reduce the conductivity…
Generally, in the steelmaking process classification of the EAF is based on specific working features. such as nature of power supply, furnace lining type, charging mode, output power of furnace transformer and tapping mode of molten steel. Common the EAF can be classified by its below features. Power supply nature:…
Scrap steel is the main raw material for arc furnace smelting. As social scrap steel contains a large amount of Cu, Sn, As, Pb and other harmful elements that are difficult to be removed. Applying some replacements of scrap can helpfully improve this situation, hot metal (pig iron), direct reduction iron…
In practical melting process, these two kinds of furnaces have its advantages and disadvantages. Thermal Efficiency IF has higher thermal efficiency and can quickly heat the charging materials; for EAF, a great amount of arc heat is lost through the cover and furnace wall. Metallic Yield As there is no…
Served as an essential and indispensable equipment in steel industry, EAF(Electric arc furnace) has unquestionably become the propellent of technical progress in the steelmaking sector. When look back, we can clearly see several key turning points that EAF have come through. 1900s – Origin of EAF As we all know,…
In order to help customer recouping the capital of the new rolling mill factory ASAP, even under the epidemic condition, SME operation team still fly to Ethiopia last month. After 14 days quarantined in Skylight Hotel in Addis Ababa, they fly to Mekele immediately. Normal pre-production maintenance has been completed, this week…
With the efforts of SME and customer’s, the erection of 150,000tpa rebar and wire rod production line in Ethiopia goes smoothly, the commissioning of the whole line already start this month, and it will be completed this August.
After pickling the surface of continuous casting billet, it was found that there were mesh cracks on the surface of the billet, and the depth was up to 5mm. What causes the mesh cracks? The main reasons are: (1) The surface of the high temperature casting billet absorbs the copper…
Section steel production line takes billets for roughing rolling, intermediate rolling and finishing rolling after being heated. Finished section steel products in different dimensions would be bundled into storage after sizing. The finished section steel products can be divided into ordinary section steel and high-quality section steel. While ordinary section…
The Block Mill divides into 6 mill stands,8 mill stands,10mill stands, the type is 45～top cross type(V shape) non-twisted mill group, the rolled pieces are non-twisted rolled high speed in the cantilever type tungsten carbide roll collar, the rolled pieces will be the high-precision and high surface quality after rolling.…
