MET 34800 – Engineering Materials Chapter 12

MET 34800 – Engineering Materials Chapter 12 -...

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Unformatted text preview: MET 34800 – ENGINEERING MATERIALS IUPUI ENGINEERING TECHNOLOGY ENT Department CHAPTER 12 STEEL PRODUCTS Engineering Materials: properties and selection, 9th ed. Kenneth G. Budinski, Michael K. Budinski Upon completion of this chapter, the student should: have an understanding of how steels are made have a knowledge of steel products what products are commercially available. have an understanding of steel terminology and steel specification procedures CHAPTER GOALS Definition of steel Historical development Ores Iron ore blast furnace Chemical reactions (Figure 12-1) Scrap to steel 12.1 IRON ORE BENEFICIATION 12.1 IRON ORE BENEFICIATION Chemical Reactions: Production of the reducing gas: 1. C (coke) + O 2 (air) → CO 2 (carbon dioxide) 2. CO 2 + C (excess coke) → 2CO (carbon monoxide) Reduction of the iron oxide: 1. 2Fe 2 3 (ore) + 3C (coke) → 4Fe + 3CO 2 ↑ 2. Concurrent with the preceding Fe 2 3 + 3CO → 2Fe + 3CO 2 5 Figure 12–1 Schematic of a direct reduction process (a) and a blast furnace (b) 12.1 IRON ORE BENEFICIATION Chemical composition Refining Open hearth Basic oxygen furnace Electric arc Inclusion removal Continuous casting Secondary refining Pouring ingots Concast semis 12.3 STEEL REFINING Figure 12–2 Steelmaking process 12.3 STEEL REFINING 9 Figure 12–3 Making structural steel shapes from scrap in a minimill....
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This note was uploaded on 12/01/2010 for the course MET 34800 taught by Professor Flechinsine during the Spring '10 term at IUPUI.

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MET 34800 – Engineering Materials Chapter 12 -...

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