From crude steel to steel This article provides answers to the following questions, among others: What is secondary metallurgy? What is rimmed steel, semi-killed steel and killed steel? For what purpose is vacuum treatment carried out? How does the electro-slag remelting (electro-flux remelting) work? 1 Introduction 2 Deoxidation 3 Vacuum treatment (degassing) 4 Remelting process 5 Alloying Introduction In the early…
From steel to semi-finished products This article provides answers to the following questions, among others: What are slabs? What are bottom and top pouring? What are the advantages of rimmed steel? Why is only killed steel suitable for continuous casting? What are billets? 1 Ingot casting 2 Continuous casting Ingot casting With ingot casting, the molten…
Ironworks Ironworks- This article provides answers to the following questions, among others: What is charge? What is meant by charging a blast furnace? What is the function of the slag in the blast furnace process? What is the slag used for? What is a coking plant? What is the difference between coal and coke? How…
What are the ways to control the converter steelmaking process? The methods of converter steelmaking and smelting process control are: experience control, static control, dynamic control and automatic blowing control. The choice of the smelting process control method, in addition to the reasons for the factory smelting equipment, is mainly closely related to the steel…
The Electric Arc Furnace – Part 4 (EAF vs the others) This is the fourth part of our EAF-series. It is about the differences and communalities of EAF, Indiction Furnaces, Ladle furnaces, Plasma Furnaces & Vacuum Arc Furnaces.- Electric Arc Furnace EAF EAF vs other electrical furnaces Arc furnaces differ from induction furnaces in that the charge…
The Electric Arc Furnace – Part 3 (Operation) This is the third of the series of EAF for steelmaking. It focuses on the operation part of EAF production. Operation A mid-sized modern steelmaking furnace would have a transformer rated about 60,000,000 volt-amperes (60 MVA), with a secondary voltage between 400 and 900 volts and a secondary…
Electric Arc Furnace Electric Arc Furnace means an extremely hot enclosed space, where heat is produced by means of electrical arcing for melting certain metals such as scrap steel without changing electro-chemical properties of the metal. Here, an electric arc is produced between the electrodes. This electric arc is used for melting the metal. The…
The Electric Arc Furnace – History & UHP Concept (part 2) In this post, we will be talking about the history of EAF-steelmaking & the almost mystical concept of Ultra High Power Arc Furnaces (or short UHP). History The first successful and operational furnace was invented by James Burgess Readman in Edinburgh, Scotland in 1888 and…
The Electric Arc Furnace – Advantages & Deficiencies This article is transferred from The Graphite Network There is a lot of material covered. After reading the posts, you will be expert in the following topics: Advantages vs Disadvantages of EAF-use (part 1) history and UHP concept (part 2) Operation mode (part 3) EAF vs other furnaces…
The Production Feature Of Graphite Electrode (1) The production cycle is long. The production cycle of ordinary power graphite electrodes is about 45 days, the production cycle of ultra-high power graphite electrodes is more than 70 days, and the production period of graphite electrode joints requiring multiple impregnations is longer.- Production Feature Of Graphite Electrode…
