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WELD 103 - P3 Gas Welding and Braze Welding
Course Details
Course Code:
WELD 103

Calendar Description:
This course provides an introduction to three methods of joining metals and is part of a competency based, seven month Welding Level C program.

Date First Offered:
2011-05-01

Hours:
Total Hours: 90
Lecture Hours: 15
Shop Teaching Kitchen: 75


Total Weeks:
3

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:
- Fusion Welding, Braze Welding, and Brazing Processes and their Applications
- Filler Rods, Flux, and Tips for Fusion Welding, Brazing, and Braze Welding
- Fusion Weld Stringer Beads in the Flat Position on Mild Steel Plate
- Fusion Weld Fillet Welds on Mild Steel Sheet
- Fusion Weld Groove Welds on Mild Steel Sheet
- Braze Weld Fillet Welds on Mild Steel Sheet:
- Braze Weld Groove Welds on Mild Steel Plate
- Braze Weld and Groove Welds on Grey Cast Iron
- Silver Braze on Similar and Dissimilar Metals
- Joint designs for butt and fillet


Learning Outcomes:
Upon successful completion of this course, learners will be able to:
Describe the Fusion Welding, Braze Welding, and Brazing Processes and their Applications:
- Describe the principles and the terms used in fusion welding
- Describe the function of the filler rod infusion welding
- Identify the applications of fusion welding
- Describe the principles of braze welding and the principles of brazing
- Describe capillary action
- Identify the applications of brazing and braze welding
- Describe the braze weld and braze bond
Identify Filler Rods, Flux, and Tips for Fusion Welding, Brazing, and Braze Welding:
- Identify the AWS classification system for mild steel fusion rods
- Identify and select the appropriate steel fusion rod
- Describe the AWS classification system for brazing rods and braze welding rods
- Describe welding flux and identify the different forms of flux
- Describe the correct procedure for using flux
- Identify tips for welding and describe how to select the suitable tip
Fusion Weld Stringer Beads in the Flat Position on Mild Steel Plate:
- Identify the main factors of fusion welding and their importance
Describe the common weld faults:
- Describe correct weld profiles and reinforcements
- Demonstrate safe set up, ignition, and shut down of oxyacetylene welding equipment
- Perform weld on stringer beads in the flat position with and without a filler rod
Fusion Weld Fillet Welds on Mild Steel Sheet:
- Identify the four weld positions and the five basic joints
- Describe how to fit up and weld joints
- Describe how to examine welds for defects
- Describe how to fit-up square and single-vee butt joints
- Demonstrate weld on lap, tee, and corner joints in the flat, horizontal, and vertical positions
Fusion Weld Groove Welds on Mild Steel Sheet:
- Identify butt joints and common defects
- Perform weld on square butt joints in the flat position
Braze Weld Fillet Welds on Mild Steel Sheet:
- Describe the correct procedure for braze welding
- Demonstrate braze weld on stringer beads in the flat position, braze weld fillet welds on both lap and tee joints

Braze Weld Groove Welds on Mild Steel Plate:
- Prepare a single-vee butt joint on mild steel plate
- Demonstrate braze weld on single-vee butt joints requiring multi-passes
Braze Weld and Fusion Weld Groove Welds on Grey Cast Iron:
- Describe the procedures for braze welding and fusion welding grey cast iron
- Identify the importance of heat treatments
- Describe the correct techniques for precleaning grey cast iron
- Identify the advantages of braze welding over fusion welding and vice versa
- Demonstrate braze weld and fusion weld groove welds on grey cast iron
Silver Braze on Similar and Dissimilar Metals:
- Describe the flux and filler rods used in silver brazing
- Describe the joint preparation and design for brazing
- Describe silver brazing techniques
- Perform silver braze on both similar and dissimilar metals


Skills:
Select and use appropriate tools.

Grading System:
Percentage

Passing Grade:
70%

Grading Weight:
Final Exam: 50 %
Assignments: 50 %


Number of Assignments:
13

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 3 Gas Welding and Braze Welding (Queen's Printer, Victoria, BC). Chapters Covered: All
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