Задания к тексту Iron and steel manufacture (1, 2, 3)

Exercise 1

Ответьте на следующие вопросы:

 

  1. What technology is used in the production of iron and its alloys?
  2. What is the main element which influences the difference between the various types of iron and steel?
  3.  What materials are used in production of steel?
  4. How do we call an alloy of iron and carbon?
  5. What is the difference between commercial steels and iron?
  6. What is the average content of a carbon in different types of steel?
  7. What metallic materials contain carbonwithin the range of  2 to 4 percent?
  8. What is the content of a carbon in white-heart malleable iron?
  9. What special group of iron alloys is used in the manufacture of iron and steel alloys?

 

Exercise 2

Заполните пропуски недостающими по смыслу словами, используя текст:

 

  1. Iron and Steel Manufacture is a technology used in the production of … and its alloys.
  2. 2.     Various types of iron and steel are sometimes confusing because of the … used. 
  3. 3.     Steel is an alloy of… …, with an admixture of… .
  4. 4.     Some alloys that are commercially called iron contain more … than commercial … .  
  5. 5.     Open-hearth iron contain only a few hundredths of 1 percent of … .
  6. 6.     Steels of various types contain from 0.04 percent to 2.25 percent of … .
  7. 7.     Pig iron contain amounts of … varying from 2 to 4 percent.
  8. 8.     Iron, containing virtually no carbon, is known as … . 
  9. 9.     Ferroalloys are used in the manufacture steel … .  

 

Exercise 3

Соответствуют ли данные предложения содержанию текста:

 

  1. Iron and Steel Manufacture is a production of iron and its alloys.
  2.  Iron and Steel Manufacture is a production of alloys containing large percentage of carbon.
  3. The differences between the various types of iron and steel depend on the country they are produced in.
  4. Pig iron in general is an alloy of ferroalloys and carbon, often with an admixture coal and gas.
  5. Some alloys that are commercially called commercial steels contain more carbon than iron.
  6. Open-hearth iron and wrought iron contain from 1 to 4 percent of carbon.
  7.  Steels of various types contain from 2 percent to 4 percent of carbon.
  8. Cast iron and pig iron contain amounts of carbon varying from 0,4 to 2,22 percent.
  9. Ferroalloys are used in the manufacture of iron and steel alloys.
  10. Ferroalloys contain from 20 to 80 percent of an alloying element, such as manganese, silicon, or chromium.