Shielded Metal Arc Welding I
Stick welding from the first arc to a tested fillet, followed through an apprentice's first welds at a fabrication shop in Nisku, near Edmonton: how the SMAW process and the electrode covering work, constant current power sources, polarity, duty cycle and arc blow, cables, holders and machine setup, CSA W48 and AWS A5.1 electrode classifications, low-hydrogen electrode storage and control, striking the arc and running stringer beads, arc length, travel speed and electrode angles, weaves, restarts and multi-pass pads, joints, fillet weld size and fit-up, flat and horizontal fillet welds on real structural work, and a capstone of visual inspection and a fillet break test, with CSA W59 and CWB practice throughout.
WLD-120 12 lessons · 3 h 35 min ▶ Video lessons coming soon
Offered by HSM University · Welding
This is the Canadian version of this course. See the American version.
What you'll learn
- Explain how the SMAW process works, including the arc, the welding circuit, the jobs of the electrode covering, slag and fume, and calculate arc power and heat input
- Describe constant current power sources, open-circuit voltage, AC and DC, polarity and duty cycle, and control arc blow
- Select, inspect and connect welding cables, connectors, electrode holders and work clamps, estimate voltage drop, and set up a machine and booth for SMAW
- Read carbon steel electrode classifications in the CSA W48 and AWS A5.1 systems, including suffixes, and choose an electrode for a job
- Explain hydrogen-induced cracking and store, hold, time and control electrodes, especially low-hydrogen types, to code and shop requirements
- Strike and restart the arc, free a stuck electrode, set current for the electrode size, and run straight stringer beads in the flat position
- Control arc length, travel speed, travel angle and work angle, and diagnose bead faults from their appearance
- Make weave beads, sound restarts and multi-pass pads with correct overlap and cleaning between passes
- Identify the basic joints and the parts of a fillet weld, relate leg to throat and weld metal volume, and fit up, clean and tack joints with root gaps controlled
- Make single-pass and multi-pass fillet welds in the flat position and estimate the electrodes, time and cost of fillet welding
- Make single-pass and multi-pass fillet welds in the horizontal position, controlling sag, undercut, overlap and leg size
- Inspect fillet welds visually against written criteria, perform and evaluate a fillet break test and macroetch, and record the results
Course content
12 lessons · 3 h 35 min total · final exam
- 1 How the SMAW process works 19 min · quiz
- 2 Welding power sources and polarity 20 min · quiz
- 3 Cables, holders, work connections and machine setup 16 min · quiz
- 4 Electrode classifications 18 min · quiz
- 5 Electrode storage and low-hydrogen practice 17 min · quiz
- 6 Striking the arc and running stringer beads 19 min · quiz
- 7 Arc length, travel speed and electrode angles 18 min · quiz
- 8 Weaving, restarts and multi-pass pads 19 min · quiz
- 9 Joint types and fit-up for fillet welds 16 min · quiz
- 10 Fillet welds in the flat position 18 min · quiz
- 11 Fillet welds in the horizontal position 18 min · quiz
- 12 Capstone: visual inspection and a fillet break test 17 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Stick welding from the first arc to a tested fillet, followed through an apprentice's first welds at a fabrication shop in Nisku, near Edmonton: how the SMAW process and the electrode covering work, constant current power sources, polarity, duty cycle and arc blow, cables, holders and machine setup, CSA W48 and AWS A5.1 electrode classifications, low-hydrogen electrode storage and control, striking the arc and running stringer beads, arc length, travel speed and electrode angles, weaves, restarts and multi-pass pads, joints, fillet weld size and fit-up, flat and horizontal fillet welds on real structural work, and a capstone of visual inspection and a fillet break test, with CSA W59 and CWB practice throughout.