417 Flashcards
In welding, a filler rod is used to
supply extra metal to the weld
In which welding process does the electrode produce a shielding gas as it is consumed?
SMAW
A veld with a triangular cross secion that joins two surfaces at right angles is called a __ weld
Fillet
In the drawing below, number 1 is the ____ 2 is the _____ and 3 is the ___ of the weld
Toe, Root, Throat
Joint allaignment, spacing, and edge preparation together are called joint
Fitup
Good housekeeping in an area where vou are going to weld includes
moving any hoses or cables out of the way
To avoid the risk of fire or explosion when you are welding or cutting, you should
Remove combustibles from the area
Which of the following is a good way to protect yourself from fumes and gases during welding?
Hold your head to one side of the work
When welding you should wear
Gloves made of leather or canvas
You should have a qualified technician examine a regulator and repair it if the regulator
Leaks after reasonable tightening
Which of the following components is part of an oxyfuel welding outft?
Torch
Which of the following items of clothing protect you from flying sparks and metal spatters during welding?
Boots or high cut shoes
When preparing for oxyfuel welding, which of he following steps should you perform first?
Crack the cylinder valves to blow out the dirt
A neutral oxy acetylene flame has a ___ cone surrounded by a __ envelope
White; Blue
To shut down an oxyfuel welding system, must close the __ valve on the ____
Oxygen; Torch
What is similar between oxyfuel welding and arc welding?
Required joint preparation
In arc welding the term DCEN means the electrode is ____ which causes electrons to move ___ the electrode
Negative; Away from
A welding machine for average duty general service is rated in a range of about ___ A
250 - 350
What kind of welding uses a nonconsumable electrode?
GTAW
Tools that are especialy useful to welders include
Chipping Hammer
When looking for an inexpensive welding method that does not require external power, you
should choose
Oxyfuel Welding
In a horizontal weld, the welding is done from ___ the work. In a flat weld, it is done from ___ the work.
Beside; Above
The most difficult positon for welding is ___. The easiest position is ___.
Overhead; Flat
The first step you should take in preparation for SMAW welding is
Obtain the necessary safety equipment
For most GTAW welding you should tilt the gun about ___ degrees from vertical in the direction of the weld and keep a ___ in arc length.
15; 1/8
Setting the curent to high on a welding machine can cause
Irregular weld beads
Which of the following problems can be corrected by welding with ac power?
Arc blow
Excessive heating and cooling can result in which of the following faults?
Brittle welds
Uneven expansion and contracion near a welded joint can cause ___ in the metal.
Warping
Which of the following is a nondestructive test used in the identification of metals?
Magnetic reaction test
The symbol below specifies a ___ weld to be made on the ___ side of the joint
Fillet; Arrow
The weld should be ___ in high
1/2
The exposed suface of the weld should be
Convex
The weld should be finished by
Hammering
The symbol tells the welder to use what kind of welding?
Unspecified
