Prerequisite Skills:Chabot College Fall 2010Course Outline for Welding Technology 67AWELDING SKILLS LABORATORYCatalog Description:67A - Welding Skills Laboratory 2 units(May be repeated three times)Development and improvement of practical welding skills using SMAW, FCAW, MIG, GMAW, and GTAW processes. Preparation for welding solidification in 1G, 2G 1F and 2F positions. Strongly recommended: Welding Technology 64A. 6 hours laboratory.[Typical contact hours: laboratory 105]Prerequisite Skills:1. NoneExpected Outcomes for Students:2.3. Upon completion of the course, the student should be able to:1. handle welding and shop equipment in a safe manner;2. identify common metals, metal alloys and their properties;3. demonstrate proper usage of welding power supply;4. correctly identify and properly use electrodes, flux-core wires and welding consumables;5. identify OSHA hazardous material and apply safety norms in shop environment;6. perform sound welding tests in both flat and horizontal positions using GMAW, GTAW, SMAWand FCAW, processes in accordance with AWS codes in 1G, 2G, 1F and 2F positions;7. properly maintain the shop and welding equipment.Course Content:1. Shop, welding and cutting equipment safety practices2. Identify metals and metals alloy physical and mechanical properties3. Demonstration and practice of weld-ability of similar and dissimilar metals and their alloys4. Perform relevant shop and welding equipment maintenance 5. Welding fundamentals and techniques employed in performing sound welding tests in 1G, 2G, 1F, and 2F positions using GMAW, GTAW, SMAW and FCAW processes6. Adhere to AWS codes and standards that apply for flat and horizontal welding positionsMethods of Presentation:1. Demonstration of welding skills2. Individual instruction3. Collaborative peer groupAssignments and Methods of Evaluating Student Progress: 1. Typical Assignment Properly set up and adjust the FCAW machine, select the appropriate settings (0.78 inch diameter ER 232 wire), select two pieces of mild steel sheet (5/8 in. thick) and perform beveled butt weld, waved beats welds in the horizontal position. a. Obtain 5/8 in. plate, oxyacetylene cut and bevel along the longest side at 30 degree angle two 7 in. by 4 in. platesChabot CollegeCourse Outline for Welding Technology 67A, Page 2Fall 2010b. Set up the wire feeder with ER232 Lincoln flux core wire (0.78 diameter) at the 150 inch/minute speed, and a constant voltage of 20.5 voltsc. Set the power supply on DC straight polarity d. Set up and tack plates at each ende. Make welds using a trailing angle of 70 degree in flat 1G positionf. Chip the slag from the weld brush and inspect for each passg. Submit the welds for instructor inspection for each welding passh. Practice until will produce consistently sound welds with both type of electrodes2. Methods of Evaluating Student Progressa. Class participationb. Laboratory assignments and projects.c. Student finding laboratory written reportsd. Final examination: performance testTextbook(s) (Typical): Welding Lab Manual, Doug Snyder, 2004**Rationale: This book more completely covers the subject matter taught in the Welding Technology program than any other textbook we have found. Special Student Materials:1. Welding protective clothing2. Welding gloves3. Welding goggles4. Welding helmet5. Welding safety glasses6. Welding jacket7. Welding boots8. Pure tungsten 3/32 rod9. 2% thorium oxide tungsten 3/32 rodDRWeld 67A course outlineRevised: