Chapter 13 SMAW Flashcards
A drag travel angle or backhand welding is used with ___________
SMAW
What are the advantages of a smaller-diameter electrode?
- Lower amperage can be used
- A smaller weld pool is created
- The molten metal in the pool is easier to control
Why shouldn’t electrode be bent?
Because their flux covering may chip off
What is used when welding out of position?
An electrode holder
True or False: Fillet welds in the horizontal or vertical position are made on butt, lap, and T-joints.
True
Which electrodes can be used with the whip and pause technique?
Electrodes with EXX10 or EXX11 forms a good weld bead. For example E7010 could use whip and pause,
What helps obtain good fusion and prevents undercutting at the weld toe?
The electrode motion should be stopped briefly each time the electrode reaches the toe of the weld.
The electrode work angle when making a horizontal butt weld points upwards at a __________ angle
10-20 degree from a line perpendicular to the workpiece surface
Why should you keep the electrode work angle upward at 10-20 degrees when making a horizontal butt weld?
To prevent molten metal from sagging
A 20 degree drag travel angle is used to weld a butt joint in the ____________________
horizontal position in SMAW
When does an uphill weld begin?
At the bottom of the joint and ends at the top of the joint
A larger weld pool can be maintained during __________ welding, than during ___________ welding
uphill, downhill
A butt joint being welded using the uphilll method, the electrode forms a ____________ push travel angle and is pointed in the direction of the travel
5-20 degrees
What should you do if the weld pool gets too large to maintain a slightly smaller weld pool?
Use a whip and pause if using a fast freeze electrode
When does downhill weld begin?
At the top of a joint and ends at the bottom of the joint
True or False: Slag should be prevented from entering the weld pool
true
How do you prevent slag from entering the pool?
The correct welding speed keeps the welding pool ahead of the slag.
Why would you prevent slag from entering the pool?
Slag trapped in the weld causes inclusions (foreign particles) which will weaken the completed weld
Greater weld strength is obtained by welding __________ on a lap joint.
uphill
What is used for the root pass on a fillet weld?
A stringer bead
The ________ method on a butt weld ensures 100% penetration
keyhole
True or False: Many welder qualification tests are performed on out of position weld joints
true
Which vertical direction allows a larger weld pool to be maintained?
Uphill welding
Which vertical direction requires more weld passes to fill a joint?
downhill
What electrode motion can be used uphill that is not used downhill?
For welding in the _______ position, some welders clamp the electrode so it is parallel to the electrode holder.
overhead
