Course Details
Course Code:
WELD 104
Calendar Description:
This course is part of a competency based, seven month Welding Level C program in which students will learn shielded metal arc welding and its applications, and identify shielded metal arc welding equipment and its operation.
Date First Offered:
2011-05-01
Hours:
Total Hours: 360
Lecture Hours: 30
Shop Teaching Kitchen: 330
Total Weeks:
12
This course is offered online:
No
Pre-Requisites:
Admission into the Welding Level C Program
Non-Course Pre-Requisites:
None
Co-Requisites:
None
Rearticulation Submission:
No
Course Content:
- Shielded Metal Arc Welding and its Applications
- Shielded Metal Arc Welding Equipment and its Operation
- Mild Steel Electrodes for Shielded Metal Arc Welding
- Basic Joint Design and Weld Positions
- Causes of Faults and Distortion in Welds and Methods for Their Prevention and Control
- Shielded Metal Arc Weld Beads in the Flat Position on Mild Steel Plate
- Shielded Metal Arc Weld Fillet Welds on Mild Steel Sheet
- Shielded Metal Arc Weld Fillet Welds on Mild Steel Plate
- Shielded Metal Arc Weld Groove Welds on Mild Steel Plate
- Hardsurface and Hardface in the Flat Position on Mild Steel Plate
- Shielded Metal Arc Weld Groove Welds in the Flat 1G Position on Grey Cast Iron
- Safety Precautions, Handling Welding, and Cleaning Stainless Steel Alloys
Learning Outcomes:
Upon successful completion of this course, learners will be able to:
Describe Shielded Metal Arc Welding and its Applications:
- Describe the SMAW process and the power sources for it
- Identify the steps necessary in a welding station inspection
- Identify the dangers of electric shock and describe the safety rules for operating electric welding machine
Identifying Shielded Metal Arc Welding Equipment and its Operation:
- Identify basic principles of electricity and the types of current and their applications
- Describe the effects of a volt-ampere curve on the welding arc
- Describe AC and DC welding machines
- Identify electrode holders, ground clamps, and welding cables
Identify Mild Steel Electrodes for Shielded Metal Arc Welding:
- Describe the action of the SMAW electrode and identify the types of functions of SMAW electrode coatings
- Describe the four main types of SMAW electrodes
- Identify the most commonly used SMAW electrodes and their applications
- Describe basic care, handling, and storage procedures for these electrodes
Identify Basic Joint Design and Weld Positions:
- Identify the five basic joints and their many variations
- Describe the types of welds and their acceptable dimensions
- Describe continuous and intermittent welding
- Identify the four positions for fillet welds and for groove welds
Identify the Causes of Faults and Distortion in Welds and Methods for Their Prevention and Control:
- Define the three categories of weld faults
- Identify basic weld faults, their causes, and ways to avoid them
- Identify the three types of distortion, their causes, and methods for controlling each type
- Define residual stress and the basic techniques for stress relief
Shielded Metal Arc Weld Beads in the Flat Position on Mild Steel Plate:
- Identify the main factors of SMAW and their importance
- Strike an arc using the tap and scratch methods
- Demonstrate technique for welding stringer beads in the flat position and in the flat position using the weave technique
Shielded Metal Arc Weld Fillet Welds on Mild Steel Plate:
- Demonstrate technique for fillet welds in the 1F position, the 2F position, the 3F position (uphill), and the 4F position, all on lap, tee, and corner joints using several different electrodes
- Demonstrate technique for welding structural section to plate 5F
- Demonstrate technique for welding pipe to plate 5F
Shielded Metal Arc Weld Fillet Welds on Mild Steel Sheet:
- Demonstrate technique for fillet welds in the horizontal 2F position on lap and tee joints on mild steel sheet using two different electrodes
- Demonstrate technique for fillet welds in the vertical 3F position on lap and tee joints on mild steel sheeting using three different electrodes
Shielded Metal Arc Weld Groove Welds on Mild Steel Plate:
- Demonstrate how to weld groove welds on butt joints in all four positions with, and without, backing
- Perform introductory guided bend tests and performance of root and face bend tests on 10 mm weldments
- Describe the three types of guided bend tests and the equipment used
- Demonstrate technique for single pass groove welds on square butt joints on both sides in the 1G position
- Demonstrate technique for multi-pass groove welds on single-vee butt joints in the 1G, 2G, 3G, and 4G positions using backing
- Demonstrate technique for multi-pass groove welds on single-vee butt joints in the 1G positions using a spacer wire for fitup
Hardsurface and Hardface in the Flat Position on Mild Steel Plate:
- Describe the hardsurfacing process and its applications
- Identify the types of wear that hardsurfacing is designed to resist and identify the electrodes for hardsurfacing with SMAW
- Identify the problems you may encounter when hardsurfacig and how to avoid them
- Demonstrate technique for build up mild steel plate in the flat position
- Demonstrate technique for hardsurface mild steel plate in the flat position
- Demonstrate technique for welding stainless steel on low carbon steel plate
Shielded Metal Arc Weld Groove Welds in the Flat 1G Position on Grey Cast Iron:
- Describe hot welding and cold welding of grey cast iron
- Identify the special problems in welding grey cast iron
- Identify electrodes for welding grey cast iron
- Describe joint preparation for grey cast iron
- Demonstrate technique for groove welds in the flat 1G on single-vee butt joints in grey cast iron
Skills:
Select and use appropriate tools.
Grading System:
Percentage
Passing Grade:
70%
Grading Weight:
Final Exam: 50 %
Assignments: 50 %
Number of Assignments:
38
Percentage of Individual Work:
100
Course Offered in Other Programs:
No
Additional Comments:
Students will sign and adhere to the Trades & Apprenticeship Safety and Attendance Policy.
Supplies:
Students are required to supply the following tools:
- Metal tool pail (max 10" diameter) or small tool box with tote tray
- Clear CSA approved safety glasses
- High top steel-toe CSA approved leather work boots
- Padlock for locker
- 12' metric/imperial tap measure
- Arc welding helmet
- 2 pair welder's gloves
- One-piece oxy-acetylene goggles
- Tri-flint spark lighter
- Tip cleaners
- Small metal protractor
- Welder's leather jacket or cape sleeves
- 100% cotton overalls (bib or full)
- #10R straight jaw vice grip
- 10" crescent wrench
- 1 1/2 lb 24oz fibreglass handle ball peen hammer
- 12" STT metric/imperial combination square
- Centre punch
- 10" slip joint pliers
- 1/2 RD Pipeliner NCH 14" file with handle
- 45/90 degree magnet
Keys to Success:
Attendance, class participation, maintaining a professional attitude, successful study habits, and receiving a minimum of 70% on all practical and theoretical quizzes and tests.
Text Books:
Required - Industry Training Authority, 2010, Module/Line P4 Shielded Metal Arc Welding (SMAW I) (Queen's Printer, Victoria, BC). Chapters Covered: All