Metallurgy Insights Archives - Página 13 de 13 - Shanghai Metallurgy Equipment Group

Internal Quality of Casting Billet

The internal quality of the billet refers to the low power structure,component segregation, central loosening, central segregation and cracks. The formation of defects in billet involves the action of heat transfer, mass transfer and stress in solidification. After the billet is thermally processed, some defects can disappear, some are deformed,…

Surface Quality of Casting Billet

By Jennifer
fevereiro 22, 2021
Metallurgy Insights
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Casting billet surface defects vary in shape and are mainly affected by the solidification process of the mould liquid, and are related to the formation of the steel shell, liquid level fluctuations of the mould, immersion nozzle design, performance of protective slag and other factors. Good control of key factors…

Technology Application at EAF steelmaking

Steelmaking production is progressing towards more clean and more high efficiency along with many technologies put into practical application. Scrap crushing and sorting technology Scrap is mixed with ferrous metals, non-ferrous metals, non-metals, and should be crushed and sorted before charging into the furnace. Apart from separation, the paint and coating…

Scrap Requirements for EAF

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…

Electric Arc Furnace Types

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:…

Electric Arc Furnace Feedstock

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…

Induction Furnace vs Electric Arc Furnace

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…

Mesh Cracks On Billet Surface

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

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…

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