WELD 482 - Gas Tungsten Arc Welding Basic Joints

WELD 482
1.5 units
Gas Tungsten Arc Welding Basic Joints
90 hours laboratory
Prerequisite: WELD 214.
Grading: letter grade or pass/no pass.

Description

This course will address the techniques of Gas Tungsten Arc Welding (GTAW) of steels, cast iron, aluminum, hard facing, and cutting. It also covers correct equipment setup and safety practices.

Transferability

Identifiers & Codes

Department: Trades & Industrial Technology
School: Trades & Applied Technology
Academic Level: Undergraduate
TOP Code: 095650 - Welding Technology
CTE Status: Yes
SAM Code: C - Clearly Occupational
CIP Code: 15.0614 - Welding Engineering Technology/Technician.
Credit or Noncredit: Credit

Class Size Max, Units, Hours

Class Size Maximum: 25
Lecture Hours: 0
Lab Hours: 5
Supplemental Hours: 0
Credit Units: 1.5
Out of Class Hours: 0
Weekly In-Class Hours: 5
Teaching Units: 5
Total Student Learning Hours: 270
Total Contact Hours: 270

Requisites & Limitations on Enrollment

Prerequisites: WELD 214.

Catalog Information

Grade Mode: Student Choice
Is the course repeatable? No

Student Learning Outcomes & Course Objectives

Student Learning Outcomes:
  • 1. Recognize, analyze, and apply a standard of safety rules and practices given in this course pertaining to welding equipment, work habits, and an industrial environment.
  • 2. Demonstrate the ability to tack and weld a butt, edge, corner, lap and T-joint in the vertical position using .060 aluminum.
Course Objectives:

1. Demonstrate the proper way to hook up a Tungsten Inert Gas (TIG) arc welding machine.
2. Relate the safe and proper operation of a TIG welding machine to a lab situation.
3. Compare the difference in the heat settings of the different sized electrodes.
4. Demonstrate the ability to weld on plate stock (ferrous and non-ferrous).
5. Differentiate between carbon steel and cast iron.
6. Setup, prepare and repair cast iron.
7. Demonstrate the ability to weld in all positions with the TIG process.
8. Distinguish between TIG welding machines and other welding machines used.
9. Compare the welding techniques used when welding with ferrous and non-ferrous material.
10. Analyze and evaluate the effects when welding using too long or too short of an arc.
11. Demonstrate the ability to prepare and weld the five basic joints.
12. Assemble the basic joints and demonstrate weldments in all positions.
13. Weld pipe to plate in the horizontal and vertical positions.

Course Content

Course Content:
I. Welding Shop Safety and Equipment
a. Use of safety equipment, hand and power tools of the trade in an industrial environment
b. Safe use of gases within a welding shop and on job sites
c. Safe operation/use of electric/gasoline operated welding machines
3 Hour(s)
 
II. Introduction to Oxygen Acetylene Cutting
a. Cylinder/tank/regulator safety and their proper use in an industrial environment
b. Cutting operations with a hand torch and a radiograph (motorized machine cutting)
4 Hour(s)
 
III. TIG Welding Related Instructions
a. Classification of the various types of welding and electrode identification
b. Identification of welding equipment and preventive maintenance
c. Inspection and testing of welds
d. Requirements for certification and blueprint reading
3 Hour(s)
 
IV. TIG Welding Flat Position
a. Techniques of striking an arc and running beads on ferrous and non-ferrous material
b. Adjusting the amperage of welding machines for various size electrodes
c. Making weldments on butt, fillet, corner, tee, and edge joints along with plug and slot welds
d. Materials and methods
12 Hour(s)
 
V. TIG Welding Horizontal Position
a. Techniques of adjusting amperage and running beads on ferrous and non-ferrous material
b. Making weldments on butt, fillet, corner, tee, and edge joints along with plug and slot welds
c. Materials and methods
14 Hour(s)
 
VI. TIG Welding Vertical Position
a. Techniques of adjusting amperage and running beads on ferrous and non-ferrous material
b. Making weldments on butt, fillet, corner, tee, and edge joints along with plug and slot welds
c. Materials and methods
14 Hour(s)
 
VII. TIG Welding Overhead Position
a. Techniques of adjusting amperage and running beads on ferrous and non-ferrous material
b. Making weldments on butt, fillet, corner, tee, and edge joints along with plug and slot welds
c. Materials and methods
14 Hour(s)
 
VIII. TIG Welding Pipe
a. Techniques of running beads on pipe in the rolled and stationary positions
b. Welding pipe to plate
c. Welding flanges, plugs, sleeves and reducers
14 Hour(s)
 
IX. Special Applications
Welding corrosion resistant materials
8 Hour(s)
 
X. Job Related
a. Resume formulation
b. Employer expectations
c. Salary ranges and benefits
4 Hour(s)
 
 

Methods of Instruction & Active Learning

Instructional Method(s):
  • Lecture
  • Laboratory / Studio / Shop / Clinical
  • Demonstration
  • Discussion
  • Technology
  • Video Presentation
  • Collaborative Learning
  • Supplemental Learning
Examples: LECTURE: Lecture topics include safety practices while working within an industrial area/shop. Lectures will cover basic content theory of gas tungsten arc welding of the basic joints. LABORATORY/STUDIO/SHOP/CLINICAL: Students will work closely with the instructor while learning the proper way to setup and operate the welding equipment. Advanced students will assist the beginners and may work as a team or work individually. DEMONSTRATION: The instructor continuously demonstrates the proper use of the welding equipment and related tools. Students perform welding demonstrations for the instructor’s approval. DISCUSSION: Discussions go on constantly between the student and instructors as to the proper settings and adjustments for the welding machines and the electrodes used. Discussions also cover workplace safety, wages and working conditions in industry. Student-to-student discussions occur in the lab environment and will cover content information and problem solving. TECHNOLOGY: Students are encouraged to make full use of the Technology Center (Tech Center) for research on jobs and employer expectations. They are also encouraged to use the Tech Center to advance their Secretary’s Commission on Achieving Necessary Skills (SCANS). VIDEO PRESENTATION: A variety of films on safety will be shown during the semester. COLLABORATIVE LEARNING: Students will work in teams to solve specific welding related problems that instructors present. SUPPLEMENTAL LEARNING: Students are encouraged to become a member of the American Welding Society (AWS). On a regular basis, AWS provides literature on new and changing areas of welding. AWS provides meetings with the local welding shops/members and demonstrates the latest in welding technology.

Assignment for In and Out of Class

Assignment Types:
  • Substantial college level writing assignment, such as: essay(s), written homework, term/research paper, and/or other (Required).
  • Substantial college level reading assignment, such as: textbook, journal article(s), literature, and/or other (specify)
  • Lab or field activity, product, and/or report
Examples: SUBSTANTIAL COLLEGE LEVEL WRITING ASSIGNMENT, SUCH AS: ESSAY(S), WRITTEN HOMEWORK, TERM/RESEARCH PAPER, AND/OR OTHER (SPECIFY): tudents will prepare a job resume for content effectiveness and experience gained. This resume will be discussed with the instructor prior to being submitted to a prospective employer in an effort to enter the job market. SUBSTANTIAL COLLEGE LEVEL READING ASSIGNMENT, SUCH AS: TEXTBOOK, JOURNAL ARTICLE(S), LITERATURE, AND/OR OTHER (SPECIFY): Students will read the textbook,trade related publications, website documents pertaining to welding such as the American Welding Society (AWS) magazine and handouts. LAB OR FIELD ACTIVITY, PRODUCT, AND/OR REPORT:Students are given a specific project specification report to complete each time they are in class. The projects are taken from a progress chart posted in the lab. The project given will depend on the students ability and knowledge of GTAW welding. This will allow teaching of all levels of GTAW welding from beginner to advanced levels within one lab environment.

Methods of Evaluation

Written Evaluations:
  • Laboratory Report(s)
  • Written Homework
Computational or Non-Computational Problem Solving Demonstrations:
  • Laboratory Report(s)
Further Methods of Evaluation:
  • Skill Demonstrations such as class performances(s), fieldwork, performance exam(s)
  • Objective examinations, such as: multiple choice, true/false, matching items, completion
Examples: LABORATORY REPORT(S): Students are to comply with their Basic English / Writing skills when completing their assignments. They are to submit a complete and correct set of documents in a timely manner. The instructor will evaluate, grade, and return to the student with suggestions for improvements. WRITTEN HOMEWORK: Students will prepare a job resume for content, effectiveness, and experience gained. Student’s resumes will be turned in to the Instructor to be evaluated for content of student’s work experience, appropriate style and length, and tone of writing. The instructor will in turn provide suggestions / assistance. LABORATORY REPORT(S): Students will experiment with different heat settings, electrodes and metal thickness, to complete their assigned projects. The instructors will evaluate using AWS and industry standards. SKILL DEMONSTRATION SUCH AS CLASS PERFORMANCE(S), FIELDWORK, PERFORMANCE EXAM(S): Students will perform a variety of GTAW welds in the flat, horizontal, vertical and overhead positions. They will be evaluated by a welding instructor using industry standards in regards to procedure, skill and final product. OBJECTIVE EXAMINATIONS, SUCH AS: MULTIPLE CHOICE, TRUE/FALSE, MATCHING ITEMS, COMPLETION: Objective examinations will be covered within the safety exam with true/false and fill in questions. Students will be questioned by the instructor on the proper setup of equipment and proper welding sequence.

Diversity, Equity, Inclusion, Accessibilty

Instruction through the Course Outline of Record includes approaches to teaching that promote inclusion and engagement with diverse bodies of students using methods that are inclusive of diverse perspectives, close equity gaps, and are accessible to all students. Teaching faculty participate in college-wide efforts to close equity gaps, such as course-level data validation in program planning, centers and communities for teaching, DEIA professional development activities, and Student Learning Outcomes assessment. Cyclical Routine Review of course objectives, outcomes, content, assignments, methods of evaluation, methods of instruction, representative textbooks and materials, and requisites allows faculty to explore how each element of the course outline illustrates inclusion and engagement with diverse student bodies. Course instruction is accessible to all students, including those with disabilities, and is achieved through professional development support, and District accessibility procedures which guarantee accommodation so that all students can equally participate in learning opportunities. Design of instructional materials, including those hosted online in learning management systems, can be reviewed for accessibility through accountability systems such as the CVC@ONE's Peer Online Course Review and in collaboration with the college’s Instructional and Universal Designer, who assists faculty in the design and implementation of materials and strategies that meet best practices for Accessibility and Universal Design for Learning (UDL).

Representative Textbooks and Materials

Representative Textbook:

This is a lab only course. Students will be given and follow a Welding Procedure Specification in order to complete their assigned welding coupon.

Recommended Textbook:

Modern Welding, Andrew D. Althouse, Carl H. Turnquist, William A Bowditch, and Kevin E. Bowditch.12 Edition, Goodheart-Willcox Company, Inc.,2020

Modality