Unit IV. Welding

Vocabulary I

Weld сваривать, сварной шов

forge welding кузнечная сварка

arc дуга

arc welding электродуговая сварка

to joint соединять

to predict предсказывать

carbon electrode угольный электрод

to cause вызывать, заставлять

to fuse плавить, расплавлять

molten расплавленный, жидкий

external внешний

to feed (fed, fed) подавать, питать

base metal = parent metal основной металл

filler metal присадочный металл

electric current электрический ток

gap промежуток

fusion welding сварка плавлением

electrode tip конец электрода

wise проволока

pressure welding сварка под давлением

manual welding ручная сварка

to establish устанавливать ( о дуге )

to be liable to smth.- иметь склонность к чему-либо 2 hammering = forging

drop -за падение 4 to fracture- образовывать трещины

II

Resistance welding контактная сварка

Sport welding точечная сварка

Futt welding сварка встык, впритык

Flash welding стыковая контактная сварка оплавлением

Seam welding шовная роликовая сварка

Projection welding- рельефная сварка

Warpage искривление, перекос

Flame пламя

Welding blowpipe = torch сварочная горелка

Oxygen кислород

Exercise I. Choose the correct Russian equivalents:

1. forge welding 1. электрический ток

2. arc 2. контактная сварка

3. filler metal 3. расплавлять

4. to fuse 4. присадочный металл

5. electric current 5. зазор

6. gap 6. кузнечная сварка

7. resistause welding 7. дуга

Exercise 2. Choose the correct English equivalents:

1. 1. molten

   2. carbon electrode

   3. to feed

   4. wire

   5. pressure

   6. to predict

   предсказывать

2. подавать

3. давление

4. проволока

5. угольный электрод

6. расплавленный

Exercise 3. Find in the text nouns for the following verbs:

To weld, to join, to heat, to force, to feed.

Exercise 4. Find in the text verbs for the following nouns:

Welding, prediction, join, replacement formation, existancc.

Exercise 5. Translate the words of the same root. Define speech parts:

Form – forming - formation

to fuse – fusion - fusible

to find – finder – finding

to mix- mixer mixture

Exercise 6. Use the right words:

1. Arc welding is a process.

1. electric welding

2. fusion welding

2. In arc welding electric current passes trough an electrode and jumps across a ...

1. electrode

2. gap

3. Resistance welding has a number of ... .

1. properties

2. advantages

4. In gas welding the required heat is supplied by a high temperature ....

a) flame

b) mixture

5. The two gases are mixed in a…

a)welding circuit

b)weeding blowpipe and acetylene are

6. Hydrogen and acetylene are …

1. inert gases

2. b) combustion gases

Exercise 7. Choose synonyms to the following words:

the parts to be joined

1. t he parts to be welded

the parts to be separated

welding electrode

2. technique of welding

welding method

welding

3. fusion

melting

liquid metal

4. molten metal solid metal

welding blowpipe

5. torch

welding rod

Exercise 8. Translate the sentences paying attention to the Passive Voice:

1. In our country a higher proportion of metal parts is joined by welding.

2. Forge welding was first used by the ancients.

3. An electric arc was discovered by Russian engineer V. V. Petrov.

4. Welding procedures are classified as manual, semi- automatic or automatic welding.

5. In fusion welding the welding area is heated to a molten state and filer metal must be added to the weld.