Chabot College
Fall 2010
Course Outline for Welding Technology 70
INTRODUCTION TO WELDING
Catalog Description:
70 - Introduction to Welding
(May be repeated 3 times)
2 units
Welding industry fundamentals including introduction to SMAW, GMAW, GTAW, FCAW processes,
oxyacetylene and braze welding, plasma and fuel gas cutting, general shop equipment usage, welding
electricity fundamentals, shop safety, identification of welding consumables, hazardous materials
regulation, introduction to blueprint reading as applied in manufacturing industry. 1 hour lecture, 3
hours laboratory.
[Typical contact hours: lecture 17.5, laboratory 52.5]
Prerequisite Skills:
None
Expected Outcomes for Students:
Upon completion of the course, the student should be able to:
1. properly identify CC (constant current) and CV (constant voltage) welding power supllies and
describe their applications;
2. handle welding and shop equipment in a safe manner;
3. identify common metals, metal alloys and their properties;
4. demonstrate proper usage of welding power supplies;
5. correctly identify and use electrodes, flux-core wires and welding consumables;
6. perform welds using welding symbols, blueprints and shop sketches;
7. identify hazardous material and apply OSHA safety norms in shop environment;
8. perform welds in flat and horizontal positions using SMAW, FCAW, GMAW, GMAW and
OFW processes;
9. perform oxyacetylene and plasma cuts;
10. properly maintain shop and welding equipment.
Course Content (Lecture):
1. Welding power supplies and their application
2. Metallurgical welding related transformation
3. Welding techniques applied to perform SMAW, FCAW, GMAW, GMAW and OFW processes
in 1G, 2G, 1F, and 2F positions
4. The weld-ability of metals and their alloys
5. Welding related distortion and distortion control techniques
6. Welding procedure qualifications in accordance with AWS codes
7. OSHA industrial safety requirements regulations
8. Estimating welding costs
9. Equipment and shop maintenance
Course Content (Laboratory):
1. Select the appropriate welding power supplies selection and settings for the required
application
2. Study of the welding metallurgical modification of the weld bed and its HAZ (heat affected
zone)
Chabot College
Course Outline for Welding Technology 70, page 2
Fall 2010
3. Welding practice on plates and profiles applying SMAW, FCAW, GMAW, GMAW and OFW
processes in 1G, 2G, 1F, and 2F positions
4. Demonstration and practice of weld-ability of similar and dissimilar metals and their alloys
5. Performance of destructive and nondestructive tests using plasma and fuel cutting practice
and shop related equipment
6. Indentify and reason related metallurgical and non-metallurgical welding discontinuities and
defects ascertaining proper control related techniques in order to satisfy AWS testing
requirements
7. Identify and apply appropriate procedures for the elimination of hazardous materials according
to the OSHA material safety data sheet
8. Assessing the various layouts and fitting designs on welding costs including technical math
calculations
9. AWS welding performance test in SMAW, FCAW, GMAW, GMAW and OFW processes in
1G, 2G, 1F, and 2F positions
10. Equipment and shop maintenance
Methods of Presentation:
1.
2.
3.
4.
Lectures
Videos
Demonstrations
Invited guests
Assignments and Methods of Evaluating Student Progress:
1. Typical Assignment
Properly set up and adjust the GTAW machine select the appropriate settings, obtain two
pieces of mild steel sheet (1/16 inch aluminum) and perform stringer beats on an outside
corner.
a. Obtain one 1/16 in. aluminum sheet metal
b. Choose the proper adding rod
c. Use the 3/16 EW green tungsten rod (non-consumable)
d. Set the power supply on DC reverse polarity (170-210 amperage)
e. Set up and tack plates at each end
f. Perform stringer beats welds on an outside corner
g. Submit the welds for instructor inspection
2. Methods of Evaluating Student Progress
a. Class participation
b. Laboratory assignments and projects.
c. Student finding laboratory written reports
d. Homework assignments
e. Quizzes
f. Midterm examination
g. Final examination
Textbook(s) (Typical):
1. Welding Principles and Application, 6th ed. Larry Jeffus, 2009
2. Welding Lab Manual, Doug Snyder, 2004*
*Rationale: This book completely covers the subject matter taught in Welding Technology
program better than any other textbook we have found.
Chabot College
Course Outline for Welding Technology 70, page 3
Fall 2010
Special Student Materials:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Welding protective clothing
Welding gloves
Welding goggles
Welding helmet
Welding safety glasses
Welding jacket
Welding boots
Pure tungsten 3/32 rod
2% thorium oxide tungsten 3/32 rod
DR
Weld70 course outline
Revised: Aug2009