Answer the following questions.

Date: 2015-10-07; view: 723.

Fill in the missed words.

1. … metals are widely used in the machine-building industry.

2. … metals consist of iron combined with carbon, silicon, phosphorus and other elements.

3. … is the most important of all elements present in ferrous…

4. … metals are used in industry in two general forms: … and … iron.

5. Two ferrous alloys are derived from … iron which is produced in a blast furnace in the form of pigs.

6. Metals are usually … and poured into a form which is called a “mould”.

7. The work of casting metals is … in foundries.

8. … of castings made from different metals … different types of melting furnaces.

9. … is usually used for melting grey iron.

10. … are used to melt the metal for making maleable iron castings.

11. For melting steel …, … or electric furnaces are used.

12. In melting … metals generally crucibles or electric furnaces are used.

13. … mostly employed for melting metals are coke, coal, oil and gas.

1. What are the engineering metals?

2. What are the two groups of metals?

3. What do ferrous metals consist of?

4. When are ferrous metals used?

5. What are the two general forms of ferrous metals?

6. Where is pig iron produced?

7. How are called the forms where two metals are melted and poured?

8. When is the cupola furnace used?

9. What is used for making malleable iron castings?

10. What is used for making steel?

11. What is used in melting non-ferrous metals?

12. What fuels are mostly employed for melting metals?