In the converter steelmaking, the normal feeding sequence is: scrap-molten iron, that is, first add a certain amount of scrap to the converter, and then start adding molten iron. Adding scrap steel first is more from a safety perspective. First, the residual temperature in the furnace can be used to bake the scrap, evaporate the…
During rolling, the cold roll is subjected to strong internal and external forces such as rolling pressure, bending moment, and shear stress, resulting in cracks in the roll and peeling of the working surface, and the welds, inclusions, and edge cracks of the rolled parts can easily lead to instantaneous high temperatures, resulting in Accelerated…
Today we are not talking about (iron ore and steel scrap) prices, only the method of (scrap preheating), to increase the converter scrap ratio, not only in one link, it should eat scrap in all links of the entire process, the following is what we are Let me share with you the experiences and methods…
There are many varieties of high-speed wire rods, especially high-quality special steel varieties such as bearing steel, welding wire steel, cord steel, cold spade steel, spring steel, etc., which require higher surface quality of hot-rolled coils. If there are defects such as scratches on the surface, it will not only cause the final parts of…
Explanation of some problems about integral casting materials and masonry of ladle Answer: The main methods of ladle refining are: slag washing, vacuum, stirring, heating, spraying (including wire feeding and shot peening). At present, the commonly used refining methods at home and abroad are nothing more than the single use or combined application of these…
Today’s article is a special article on energy saving and consumption reduction in converter steelmaking at the request of our back-end fans. For reference. The iron and steel industry is a high energy consumption industry, which consumes about 10% of the national energy consumption. In the process of steel production, the converter steelmaking process accounts…
Because it is necessary to complete the control of the molten steel temperature, the precise adjustment of trace alloy elements and the calcium treatment of the improvement of inclusions in the tundish, at the same time, because the capacity of the tundish and the temperature of the molten steel are greatly different from those of…
Graphite electrodes in electric arc furnace production account for about 10-20% of processing costs. Past studies rarely considered factors related to electrode consumption and electric furnace operating experience, such as arc stability, foam slag efficiency, electrode water cooling and other factors. In this study, we thoroughly studied the changes in electrode consumption between a single…
The International Energy Agency (IEA) has designed a technology roadmap for the sustainable development of the steel industry in the recently announced “Energy Technology Outlook”. According to the report, steel is essential to the modern economy, and global steel demand is expected to continue to grow in the coming decades. But to meet downstream demand,…
The so-called breakout refers to the phenomenon that the slab shell is not solidified in the initial stage of continuous casting or during the pouring process, or the slab shell is broken or leaked due to other external forces, which causes the internal molten steel to flow out. Breakout is one of the vicious accidents…
