Final Review COPY Flashcards
What is the carbon content of mild steel?
Less then. 0 3%
What is steel with the carbon content of less than .03% called
Mild steel
What is the difference between cast-iron and wrought iron?
Cast-iron uses molds
Wrought iron is hammer to impart strength
What distinguishes iron from steel
Carbon content
What is molten iron poured into a mold and allowed to harden
Cast iron
What has a higher carbon content wrought iron or cast-iron?
Cast iron
What is a low carbon iron alloy that is semi-fused with slagging inclusions giving it a grain like wood
Wrought iron
What is iron that has been purified by being repeatedly struck with a hammer?
Wrought iron
What is a mini mill?
A process of steel making in which structural steel is produced from scrap steel in electric furnaces. These are miniature only in comparison to traditional mills and produce most structuralist steel for frames of buildings
What is the general process of steelmaking?
- Molten iron is produced in a blast furnace
- oxygen is introduced, blurting out impurities, changing molten iron to molten steel. Any admixtures are added
- molten steel is cast into molds in preparation for the ruling mill process
- the structural steel shape is made by passing the Bloom’s or slab through heavy rulers a number of times
bessemer method
bessemer method of steelmaking
Open hearth process of steelmaking
Blast furnace
(used for basic oxygen process)
What is the steelmaking process wherein a water cooled Lance is lowered into a container of molten iron and steel scrap, delivering pure oxygen at very high temperature to burn off carbon and other impurities?
Basic oxygen process
Basic oxygen process
Basic oxygen process
What is the steelmaking method used to produce most of steel for buildings and many mills wherein the multi-discharged or tapped by electric current to separate carbon and impurities?
Electric arc furnace method
Electric arc furnace method of steelmaking
Electric arc furnace method of steelmaking
Top — mini mill
bottom — blast furnace and electric arc method
What is the difference between ingot, bloom, and slab?
What is the name for people who build steel buildings?
Ironworkers
Where are steel shapes made with rollers?
Structural mill