Английский для сварщиков. Гричин С.В. - 128 стр.

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ТПУ | Томск

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128
недопустимое качество сварки, квалифицированный сварщик,
содержание серы, механическая прочность, искусственный спутник,
система высокой очистки воды, обязательное условие.
Characterize orbital welding by filling in the right side of the following table:
Parameter Description
Model:
Principle of the process
An arc travels circumferentially
around a work piece (usually a tube or
pipe).
Category
Application areas
Limitations
Speaking
True or false?
1. Orbital Welding is a process, where the arc travels at least 360 degrees
around the work piece with some interruptions.
2. MIG/MAG welding, using the down-hand welding sequence in 2 half-
circles, refers to orbital welding.
3. Puddle control is very important for Orbital welding.
4. The number of Orbit Welding users stays the same for a long period of
time.
5. Aerospace industry is the only area of Orbital Welding application.
6. Joint preparation is not necessary.
7. Orbital-welding-system is very fast and cheap.
8. Filler-wire is used for all wall thickness applications.
Describe Orbital welding by completing the following sentences:
1. The term Orbital comes from the Latin word ORBIS and means … . 2. The
Orbital Welding is a process in which an arc travels … . 3. By category it
belongs to … . 4. It is practiced only with … . 5.Orbital-welding is presently
used in such areas as … . 6. It is used to produce … . 7. The basic rules for
this process are … . 8. Absolute tolerances in Orbital-Welding Process are
important because … . 9. Wall-thickness of 4 mm is possible … . 10. Joint
preparation includes … . 11. Orbital-multi-pass-welding is rather expensive
and its use is only justified when … . 12. Filler-wire is necessary to use only
… .

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