ВУЗ:
Составители:
Рубрика:
115
10 Say if the following is 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.
Speaking
11 Describe Orbital welding by completing the following sentence.
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
… .
Reading 3
12 You will read an interview with industry leaders who speak about
future of welding.
Before you read predict which processes will be used more and which less in
the future. Then read the text and compare our predictions with those in the
text.
Ø plasma arc welding
Ø gas tungsten arc welding (GTAW)
Ø continuous wire processes (FCAW, GMAW)
Ø laser beam welding process
Ø friction stir welding
Страницы
- « первая
- ‹ предыдущая
- …
- 113
- 114
- 115
- 116
- 117
- …
- следующая ›
- последняя »
