The Source of hydrogen The main ways for hydrogen to enter the liquid steel are: through the rust on the scrap steel surface (xFeO?yFe3O4?2H2O); Hydrogen in ferroalloy; Water in carburizer, deoxidizer, mulch, insulation, slagging agent (Ca(OH)2), bitumen and tar; Ladle, tundish and injection pipe undried; Spray coating of ingot mould;…
Ladle furnace is mostly used in the refining of bearing steel, alloy structural steel, tool steel, spring steel, carbon steel and other steel types. Electric arc furnace, LF and CCM combine into a high efficiency short process production line with remarkable refining effect. The LF can refine the liquid with…
For the electric furnace steelmaking, ingredients is related to whether the melting can smoothly operate andcost of the production. The reasonable ingredients can shorten melting time. Firstly it should carefully calculate correctly and accurate weighing the charge, next the size of the furnace charge should be fit proportionally. Thirdly various ingredients…
In principle, investors of EAF-steelmaking project should check carefully whether there are enough prerequisite conditions, then make a thoughtful plan of the project. Following five crucial factors should be primarily reviewed: 1.Product positioning Product positioning mainly includes product kinds, specifications and product quantity. It is difficult for a steel plant…
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…
General Secretary Xi has delivered report to the 19th National Congress on Wednesday. There are two strategic judgments pointed out in Xi＊s report: “that socialism with Chinese characteristics has now entered a new era, and that the principal contradiction in society is between people’s ever-growing needs for a better life…
