quiz 4 Flashcards
List two ways to start an arc when stick welding
Match
Direct contact
Of the two ways to strike an arc, which is the most accurate?
Tipping
List several things that a welding can do to correct overheating when welding.
Move faster
Turn down amps
Change welding pattern
Explain the results of welding with too low a current:
Not enough penetration
Causes weld to not be strong
List a characteristic of a weld that was made with too long of an arc length.
Excessive spatter
Little to no build up
T or F : with a trailing angle you weld is colder and good for thin metal
False
T or F : the weave pattern for each weld is often the personal choice of the welder
True
T or F : You should never try to change the heat setting on a machine while welding
True
T or F : Some fast fill electrodes with heavy flux coatings can actually be dragged across the metal and still keep a proper arc length
True
What is Arc length
The distance of the arc between the electrode and the work
Slag Inclusion
An area in the weld where slag is surrounded by the weldment
E-6010
Good for dirty metal and provides good penetration, burns through paint, oil, and dirt
E-6013
Good for a smooth weld and for light penetration, high slag that comes off easy
E-7018
A low hydrogen electrode, moderate penetration, and a heavy but easily removed slag layer, porosity can be a problem so dont use for an open root weld
What is a characteristic of having a short arc length
Can cause frequent sticking of the electrode
