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Home > Ordnance Documents and other related manuals > > Lesson 1. Practical Exercise- Answers - od165180110
Practical Exercise Cont. - od165180109
Lesson 1. Practical Exercise- Answers cont. - od165180111

Welding Operations, I
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WELDING OPERATIONS I - OD1651 - LESSON 1/PE 1
LESSON 1.
PRACTICAL EXERCISE - ANSWERS
1.
a.
Specific properties
b.
Type of base metal
c.
Position of the weld
d.
Type of current available
e.
Current polarity available
f.
Dimensions of the section to be welded
g.
The type of fit permitted by the work
2.
a.
Bare
b.
Thinly coated
c.
Shielded-arc or heavy coated
3.
a.
The  letter  in  the  number  series  indicates  that
the
welding rod is intended for use in metal-arc welding
b.
The third and fourth numbers respectively
4.
a.
It dissolves or reduces impurities on the weld metal
deposited
b.
It reduces the adhesive force between the molten metal
and the end of the electrode
c.
It increases the stability of the arc
5.
Alternating and direct current.
6.
Metal-arc welding and brazing with oxyacetylene.
7.
By the use of reinforcing plates.
8.
a.
Butt joint
b.
Corner joint
c.
Edge joint
d.
Lap joint
e.
Tee joint
9.
Short arc length.
10. The overhead position.
11. Homogeneous and face hardened armor plate.
12. Homogeneous plate.
13. a.
Appearance test
b.
Fracture test
c.
Grinding test
105






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