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ІІІ. Language


Ex.6. Match word and word combinations in column A with those in column B:

A 1 .чорні метали 2. кольорові метали 3. чавун 4. спец. легірований чавун 5. ковкий чавун 6. вуглець 7. марганець 8. сірка 9. відливка 10. ливарний завод 11. ливарний завод 12. інструментальна сталь 13. випалювати 14. деталь

B 1. to anneal 2. malleable iron 3. part 4. cast iron 5. foundry 6. manganese 7. carbon 8. sulphur 9. tool steel 10. mould 11. alloy cast iron 12. non – ferrous metals 13. ferrous metals 14. casting

Ex.7. Find in the text nouns for these verbs:
To cast, to alloy, to anneal, to machine, to equip, to produce, to compare, to manufacture.


Ex. 8. Fill in the blanks using the following words:


a) steel, b) metals, c) the shop, d) on account of, e) limits, f) are tested,
g) percentage

1. 
   _________is a very strong metal that is made from iron mixed with another carbon.
   
2. 
   All our parts _________for strength before they leave the factory.
   
3. 
   Malleable iron can be cast into very large bodies ________ its shrinkage and of the difficulty on annealing.
   
4. 
   Cast iron contains a higher _________of carbon than steel does.
   
5. 
   Different ________are widely used in the machine building.
   
6. 
   Therefore the carbon content in steel is confined to certain _____.
   
7. 
   _______where metals are cast is called a foundry.
   

Ex.9. Complete the sentences. Use the words given below:

1. 
   The alloy of grey castings is composed of … .
   

1. 
   tungsten, sulphur, nickel, carbon
   
2. 
   carbon, vanadium, manganese and chromium
   
3. 
   silicon, manganese, phosphorus, carbon, sulphur and iron
   

2. 
   Steel is iron with a … .
   
   1. 
      very little carbon content
      
   2. 
      very large carbon content
      
   3. 
      insignificant carbon content
      
3. 
   The shop where metals are cast is called … .
   
   1. 
      a mould
      
   2. 
      a foundry
      
   3. 
      a furnace
      
4. 
   Very much carbon makes steel brittle … .
   
   1. 
      which increase its strength
      
   2. 
      which decreases its strength
      
   3. 
      which improves its strength
      
5. 
   Malleable iron has to be poured very rapidly because … .
   
   1. 
      it melts very quickly
      
   2. 
      it anneals very quickly
      
   3. 
      it solidifies very quickly