Prerequisite Skills:Chabot College Fall 2010Course Outline for Welding Technology 70INTRODUCTION TO WELDINGCatalog Description:70 - Introduction to Welding 2 units(May be repeated 3 times)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:NoneExpected 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 anddescribe 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 application2. Metallurgical welding related transformation 3. Welding techniques applied to perform SMAW, FCAW, GMAW, GMAW and OFW processes in 1G, 2G, 1F, and 2F positions4. 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 costs9. Equipment and shop maintenanceCourse Content (Laboratory):1. Select the appropriate welding power supplies selection and settings for the required application2. Study of the welding metallurgical modification of the weld bed and its HAZ (heat affected zone)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 alloysChabot CollegeCourse Outline for Welding Technology 70, page 2Fall 20105. Performance of destructive and nondestructive tests using plasma and fuel cutting practice and shop related equipment6. Indentify and reason related metallurgical and non-metallurgical welding discontinuities and defects ascertaining proper control related techniques in order to satisfy AWS testing requirements7. Identify and apply appropriate procedures for the elimination of hazardous materials according to the OSHA material safety data sheet8. Assessing the various layouts and fitting designs on welding costs including technical math calculations9. AWS welding performance test in SMAW, FCAW, GMAW, GMAW and OFW processes in 1G, 2G, 1F, and 2F positions 10. Equipment and shop maintenanceMethods of Presentation:1. Lectures 2. Videos 3. Demonstrations 4. Invited guests Assignments and Methods of Evaluating Student Progress: 1. Typical AssignmentProperly 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 metalb. 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 endf. Perform stringer beats welds on an outside cornerg. Submit the welds for instructor inspection2. Methods of Evaluating Student Progressa. Class participationb. Laboratory assignments and projects.c. Student finding laboratory written reportsd. Homework assignmentse. Quizzesf. Midterm examinationg. Final examinationTextbook(s) (Typical):1. Welding Principles and Application, 6th ed. Larry Jeffus, 20092. 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.Special Student Materials:1. Welding protective clothing2. Welding gloves3. Welding goggles4. Welding helmetChabot CollegeCourse Outline for Welding Technology 70, page 3Fall 20105. Welding safety glasses6. Welding jacket7. Welding boots8. Pure tungsten 3/32 rod9. 2% thorium oxide tungsten 3/32 rodDRWeld70 course outlineRevised: