Maricopa Community Colleges  WLD206   19942-20026 
Official Course Description: MCCCD Approval: 10/26/93
WLD206 19942-20026 L+L 3 Credit(s) 5 Period(s)
Advanced Welding - Heliarc and Wire Feed
Instruction in theory and practice on tungsten inert gas and wire feed welding. Welding procedures on ferrous and nonferrous metals. Set up and operation of all types of machines used in tig and mig welding. Prerequisites: WLD106 or departmental permission.
Go to Competencies    Go to Outline
 
MCCCD Official Course Competencies:
 
WLD206   19942-20026 Advanced Welding - Heliarc and Wire Feed
1. Demonstrate weld testing positions. (I)
2. Identify testing procedures as they relate to material analysis. (II)
3. Describe different methods of metal identification. (III)
4. Describe different types of metal testing methods used in industry. (IV)
5. Identify welding symbols used on blueprints. (V)
6. Design and lay out templates used for welding. (VI)
7. Describe the process of tig welding. (VII)
8. Identify the advantages of the tig welding process. (VII)
9. Explain different weld machines and related equipment. (VIII)
10. Demonstrate the process of setting up welding procedures. (IX)
11. Identify the different types of alloys and the applications of each. (X)
12. Describe the mig welding process. (XI)
13. Explain the various parts of a mig welding machine. (XII)
14. Perform welding procedure as related to mig welding. (XIII)
15. Identify the different types of alloys and their application. (XIV)
Go to Description    Go to top of Competencies
 
MCCCD Official Course Outline:
 
WLD206   19942-20026 Advanced Welding - Heliarc and Wire Feed
    I. Testing Positions
        A. Flat
        B. Horizontal
        C. Vertical
        D. Overhead
      II. Testing Procedures
          A. Joint Types
          B. Position of Work
          C. Material Analysis
          D. Testing Method
          E. Allowable Tolerance
        III. Metal Identification
            A. Appearance
            B. Weight
            C. Spark Test
            D. Hardness
            E. Magnetism
            F. Cross-Sectional Break Area
          IV. Test Methods
              A. Guided Bend Test
              B. Tensile Strength Test
              C. X-Ray Examination
              D. Ultrasonic Test
              E. Pressure Test
              F. Static Load Test
            V. Blueprint Symbols
                A. Joint Symbol Identification
                B. Weld Symbol Identification
                C. Weld Location
                D. Weld Duration Signs
                E. Detail Information
                F. Material List
              VI. Layout
                  A. Short Method Pipe
                  B. Templates Pipe
                  C. Locking Methods
                  D. Measurements
                  E. Weld Sequence
                VII. Description of Process
                    A. Arc Stream
                    B. Shielding of Molten Metal
                    C. Adding of Filler Metal
                  VIII. Equipment
                      A. AC Machine
                      B. DC Machine
                      C. Torches
                      D. Tungsten Electrodes
                      E. Electrical System
                      F. Gas System
                      G. Water System
                    IX. Procedures
                        A. Joint Design
                        B. Cleaning
                        C. Weld Backing
                        D. Welding Current
                        E. Weld Speed
                        F. Arc Length
                        G. Tungsten Electrode Diameter
                        H. Welding Techniques
                        I. Gas Flow Rate-Cubic Foot per Hours (CFH)
                        J. Cup Sizes
                        K. Rod Composition
                        L. High Frequency Current
                        M. Striking the Arc
                        N. Fouling of the Electrode
                      X. Application
                          A. Aluminum
                          B. Stainless Steel
                          C. Magnesium
                          D. Carbon Steels
                          E. Cast Iron
                          F. Hardfacing
                          G. Copper
                          H. Copper Alloys
                          I. Tool Steel
                        XI. Description of Process
                            A. Arc stream
                            B. Shielding of arc and molten puddle
                            C. Mechanical adding of filler rod
                          XII. Equipment (MIG)
                              A. DC Generator
                              B. Transformer rectifier
                              C. Wire feeder
                              D. Wire feed gun
                              E. Spooled wire
                              F. Electrical system
                              G. Shielding gas system
                              H. Possible water system
                            XIII. Procedures (MIG)
                                A. Joint design
                                B. Cleaning
                                C. Wire diameter
                                D. Voltage
                                E. Wire speed - amperage
                                F. Welding techniques
                                G. Gas flow rate - CFH
                                H. Nozzle size
                                I. Drive roll pressure
                              XIV. Application (MIG)
                                  A. Aluminum
                                  B. Stainless steel
                                  C. Carbon steels
                                  D. Hardfacing
                                  E. Buildup work
                                  F. High speed production
                              Go to Description    Go to top of Competencies    Go to top of Outline