Write down the unknown words and try to find the translation in the dictionary.
Part II
1. Read the text:
Resistance welding
1. In resistance welding, heat is obtained from the resistance of metal to the flow of an electric current. 2. Electrodes are clamped on each side of the parts to be welded. 3. The part are subjected to great pressure. 4. Besides, a heavy current is applied for a short period of time. 5. The point where the two metals touch creates resistance to the flaw of current. 6. This resistance causes heat. 7. The heat metals the metals and creates the weld. 8. Resistance welding is widely employed in many fields of sheet metal or wire manufacturing. 9. It is often used for welds made by automatic or semi – automatic machines. 10. It is very popular now.
2. Translate the Text:
Answer the questions:
Questions:
1. How is heat obtained in resistance welding?
2. What are clamped on each side of the parts ?
3. What does this resistance cause?
4. Where is resistance welding widely employed?
5. It is used by automatic or semi – automatic machines or no?
4 . Match the sides:
| 1. Resistance welding | 1. електроди затискаються |
| 2. subjected to great pressure | 2. опір викликає нагрів |
| 3. Electrodes are clamped | 3. піддається великому тиску |
| 4. Strong current | 4. зварка опором |
| 5. Resistance causes heat | 5. сильний струм |
***
Стыковая сварка
"BUTT - WELDING"
1. Read and remember:
| Butt-welding | Стикове зварювання |
| thermoplastics | термопластик |
| sheets of steel | Листи сталі |
| applies | застосовує |
| metal alloy | Металевий сплав |
| weld joint | Зварний шов |
2. Read the Text:
Butt Welding
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