ChabotCollege

Course Outline for Welding Technology 65B, Page 1

Fall 2010

ChabotCollegeFall 2010

Course Outline for Welding Technology 65B

ADVANCED TIG, MIG, AND BLUEPRINT READING

Catalog Description:

65B – Advanced TIG, MIG, and Blueprint Reading3 units

(May be repeated three times)

Advanced theory and skill development of GTAW and GMAW processes with applications including ferrous and non-ferrous metals and their alloys in the both vertical and overhead positions according to AWS codes and standards, advanced blueprint reading and fitting, oxyacetylene brazing, flame and plasma cutting, electrodes and wire selection, advanced blueprint reading and practical interpretation of welding symbols, proper and safe use of shop and welding equipment, hazardous material regulations. Strongly recommended: Welding Technology 65A and Welding Technology 70. 1 hour lecture, 6 hours laboratory.

[Typical contact hours: lecture 17.5, laboratory 105]

Prerequisite Skills:

None

Expected Outcomes for Students:

Upon completion of the course, the student should be able to:

  1. properly describe, identify and set GTAW and GMAW welding equipment according to their manufacturing requirements, their relevance and functionality;
  2. handle welding and shop equipment in a safe manner;
  3. demonstrate proper usage of welding power supply;
  4. properly identify metals and metal alloy’s weld-ability;
  5. understand and interpret metallurgical transformation in welds and welding heat affected area;
  6. correctly identify and use electrodes, flux-core wires and welding consumables;
  7. read, understand and apply blueprints, welding symbols, and shop sketches;
  8. perform math calculation from blue prints and welding symbol dimensions;
  9. identify hazardous material and apply safety norms in shop environment;
  10. perform sound welds using GTAW and GMAW processes in both vertical and overhead positions according to AWS codes.

Course Content (Lecture):

  1. Welding power supplies and their application
  2. Metallurgical welding related transform and their relevance to the welding industry
  3. Welding techniques applied to perform GTAW and GMAW welds in 3G, 4G, 3F, and 4F welding 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. Technical math application and methods of weld cost calculation
  10. Advanced theory of blueprint reading, layout, fitting of industrial assembly and subassembly
  11. Equipment and shop maintenance
  12. Welding certification preparation

Course Content (Laboratory):

  1. Welding power supplies selection and settings related to their application
  2. Metallurgical welding related transformations and their relevance to the welding industry
  3. Welding techniques applied in producing GTAW and GMAW process welds in the following positions: 3G, 4G, 3F, and 4F
  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. Study of the welding metallurgical modification of the weld bed and its HAZ (heat affected zone)
  6. Identify 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. Reading and applying blueprints and welding symbols for layout, fitting of industrial applications
  10. Equipment and shop maintenance
  11. Performance of the welding practice test according to the AWS codes in 3G, 4G, 3F, and 4F welding positions

Methods of Presentation:

  1. Lectures and discussions
  2. Models, laboratory studies
  3. Videos
  4. Laboratory demonstrations

Assignments and Methods of Evaluating Student Progress:

  1. Typical Assignment:

Properly set up and adjust the GMAW machine, select the appropriate settings, select two pieces of mild steel sheet (1/2 thick) and perform a butt joint, wave beats welds in the overhead position (4G).

  1. Obtain 1/2 in. plate and oxyacetylene cut and bevel along the longest side at 30 degree angle two 7 in. by 4 in. plates
  2. Set up the machine with 0.035 inch diameter ER70S-6 solid wire
  3. Set the power supply on DC reverse polarity according to the respective machine chart for gas/gases, wire speed, voltage, and material thickness and wire size.
  4. Set up and tack plates at each end and in the overhead position (make sure that it is connected to the work connection)
  5. Perform and submit the welds for instructor inspection for each performed pass.
  6. Practice until will produce consistently sound welds
  7. Cut two1 & 1/2 in. testing specimens across the practiced welds and perform two bending tests one face up and the second face down
  8. Inspect and discuss the results with your instructor
  1. Methods of Evaluating Student Progress
  2. Class participation
  3. Laboratory assignments and projects.
  4. Student laboratory written reports
  5. Homework assignments
  6. Quizzes
  7. Midterm examination
  8. Final examination

Textbook(s) (Typical):

  1. Welding Principles and Application, (7th Edition) Larry Jeffus, 2008(Recommended but not required)
  2. 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.

  1. Blue Print Reading, (8th edition) by A.E. Bennett & Louis J. Siy, 2008

Special Student Materials:

  1. Welding protective clothing
  2. Welding gloves
  3. Welding goggles
  4. Welding helmet
  5. Welding safety glasses
  6. Welding jacket
  7. Welding boots
  8. Pure tungsten 3/32 rod
  9. 2% thorium oxide tungsten 3/32 rod

DR

Weld65B course outline

Revised: Sept2009