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Chapter Outcomes
After studying this chapter, you will be able to:
Explain the shielded metal arc welding (SMAW) process.
Properly use SMAW equipment.
Describe various joint types.
Describe AWS welding position classifications.fi
Explain how to prepare the surfaces of pieces to be welded.
Control welding variables to produce a good weld.
Identify weld discontinuities.
Take appropriate safety precautions when SMAW welding.
Weld a practice pad using SMAW.
Explain how to control distortion in a weld.
Recall the special requirements for welding cast iron.
Explain the certifi process for professional welders. fication
Words to Know
arc force
arc length
auto-darkening lenses
beveling
butt joint
constant-current
machine
corner joint
coupon
crack
destructive weld testing
discontinuities
duty cycle
edge joint
electrode
electrode holder
fast-fill electrode fi
fast-freeze electrode
ferrous
fillet weld fi
fill-freeze electrode fi
flux fl
groove weld
heat-affected zone
inclusions
incomplete fusion
incomplete joint
penetration
inverter
keyhole
lap joint
nondestructive testing
out-of-position welding
overlap
polarity
porosity
radiographic testing
rod oven
root bead
shielded metal arc
welding (SMAW)
slag
spatter
stringer bead
tack weld
tie-in
T-joint
transformer welder
travel speed
ultrasonic testing
unacceptable weld
profilefi
undercutting
weaving bead
weave pattern
weld specificationsfi
welding current
welding defects
welding leads
welding procedure
specification (WPS) fi
Before You Read
Arrange a study session to read the chapter with a classmate. After you read eac ntly ch section independ en n tl y,
stop and tell each other what you think the main points are in the section. Continue i with each section n
until you finish the chapter. fi
Shielded Metal
Arc Welding
CHAPTER
29
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