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Read and learn the following words and expressions:

gas welding

propane torch

oxyacetylene torch

sheet metal

turret

to drill holes

cast iron

to shrink

drawback

arc welding

flux coated

gauge

carbon arc welding

- газовая сварка

- пропановая горелка

- ацетиленокислородная сварочная горелка

- листовой металл

- револьверная головка (станка)

- сверлить отверстия

- чугун

- сжиматься

- недостаток

- электродуговая сварка

- шлакообразующее покрытие; минеральное покрытие

- шаблон, лекало, эталон

- дуговая сварка угольным электродом

DC (direct current)

- постоянный ток

AC (alternating current)

- переменный ток

Tungsten Inert Gas (TIG)

- дуговая сварка вольфрамовым электродом в среде инертного газа

MIG (Metal Inert Gas)

- дуговая сварка металлическим электродом в среде инертного газа

spool

- шпулька, катушка; бобина

heat buildup

- накопление тепла

distortion

- искажение

1. Answer the following questions:

1. What kinds of torches do you know? Describe each of them.

2. What types of welding are mentioned in the text? Tell a few words about each of them.

2. Give the summary of the text.

3. What parts of speech do the following words belong to? Translate these words into Russian.

Useful, fire, experience, difference, ease, heating, fuse, controllable, process, practice.

4. Find in the dictionary all possible meanings of these words. Use them in your own sentences.

Bit, flow, course, range, stream, fine, turn, power, work, plate.

5. Point out which of these sentences do not contain information from the text. Translate these sentences into Russian:

1. Gas Metal-Arc Welding is a relatively simple, versatile, and economical welding apparatus to use.

2. A high voltage arc is used to superheat and ionize a stream of air to the "plasma" state.

3. The stream of plasma makes a rapid, clean, narrow cut with minimal heating of the work piece.

4. Electroslag Welding deposits the weld metal into the weld cavity between the two plates to be joined.

5. With the right bits, rod, and technique, you can weld almost anything.

6. Deoxidizers present in the electrode can completely prevent oxidation in the weld puddle, making multiple weld layers possible at the joint.

7. TIG is a high frequency AC arc process which uses a tungsten electrode shielded by an inert gas to create a fine, controllable torch.

8. Overheating of some types of work, harder to control quality of some processes.

Read and translate the text.