Course Catalog : Subject Area




Welding Courses Offered @ TNCC

Course Description and Pre-requisites
WEL 117 Oxyfuel Welding and Cutting
(3 credits) Introduces history of oxyacetylene welding, principles of welding and cutting, nomenclature of the equipment, development of the puddle, running flat beads, and butt welding in different positions. Explains silver brazing, silver and soft soldering, and safety procedures in the use of tools and equipment. Lecture 2 hours. Laboratory 3 hours. Total 5 hours per week.
WEL 123 Shielded Metal Arc Welding (Basic)
(3 credits) Teaches operation of AC and DC power sources, welding polarities, heats and electrodes for use in joining various metal alloys by the arc welding process. Deals with running beads, butt, and fillet welds in all positions. Emphasizes safety procedures. Lecture 2 hours. Laboratory 4 hours. Total 6 hours per week.
WEL 124 Shielded Metal Arc Welding (Advanced)
(3 credits) Prerequisite(s): WEL 123. Continues instruction on operation of AC and DC power sources, welding polarities, heats and electrodes for use in joining various metal alloys by the arc welding process. Deals with running beads, butt, and fillet welds in all positions. Emphasizes safety procedures. Lecture 2 hours. Laboratory 4 hours. Total 6 hours per week.
WEL 130 Inert Gas Welding
(3 credits) Introduces practical operations in the uses of inert-gas- shield arc welding. Discusses equipment, safety operations, welding practice in the various positions, process applications, and manual and semi-automatic welding. Lecture 2 hours. Laboratory 4 hours. Total 6 hours per week.
WEL 135 Inert Gas Welding
(2 credits) Prerequisite(s): WEL 124 or instructor approval. Introduces practical operations in use of inert gas shielded arc welding. Studies equipment operation, setup, safety and practice of GMAW (MIG) and GTAW (TIG). Lecture 1 hour. Laboratory 3 hours. Total 4 hours per week.
WEL 145 Welding Metallurgy
(3 credits) Prerequisite(s): WEL 124 or instructor approval. Studies steel classifications, heat treatment procedures, properties of ferrous and non-ferrous metals. Discusses techniques and practices of testing welded joints and destructive/nondestructive, visual magnetic and fluorescent testing. Lecture 2 hours. Laboratory 2 hours. Total 4 hours per week.
WEL 150 Welding Drawing and Interpretation
(3 credits) Prerequisite(s): WEL 124 or instructor permission. Teaches fundamentals required for successful drafting as applied to the welding industry. Includes blueprint reading, geometric principles of drafting and freehand sketching, basic principles of orthographic projection, preparation of drawings and interpretation of symbols. Lecture 3 hours per week.
WEL 160 Gas Metal Arc Welding
(3 credits) Introduces semi-automatic welding processes with emphasis on practical application. Includes the study of filler wires, fluxes, and gases. Lecture 2 hours. Laboratory 3 hours. Total 6 hours per week.
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