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51 - LONG - Long-Term Programs

LONG 525 - Diploma in Welding Technology (13 Weeks)

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Course Description

This course covers topics related to well servicing methods. Participants will get a detailed view of different phenomenus asscociated with welding. It covers fluxes and their types. It conists of 9 weeks theortetical training and 4 weeks of practical sessions.

The minimum number of participants required to hold this course is 5. 

Course Objectives

  • Learn the fundementals of welding 
  • Solid-State Transformations in Weldments                                                                     
  • Be familiar with carbon Arc welding operation and applications
  • Get to know the principles Electron-Beam Welding                                                                                                                                                                                          

Who Should Attend?

  • Drillers
  • Engineers
  • Technicians 
  • Anyone involved in well control process

Course Details/Schedule

Week 1

Fundamentals of Welding                                  

  • Energy Sources Used for FusionWelding
  • Energy-Source Intensity  

Heat Flow in Fusion Welding

  • Engineering Solutions and Empirical Correlation              
  • Example 1: Welding of 5 mm (0.2 in.) Thick Low-Carbon Steels                            
  • Example 2: Welding of 6 mm (0.24 in.) Thick Low-Carbon Steels.      
  • Example 3: Cooling Rate for the Location at Distance y (in cm) from the Centerline        
  • Example 4: Solidification Rate Parametric Effects   

Thermophysical Properties of Selected Engineering Materials

Fluid Flow Phenomena During Welding                                                                      

  • Mass Transport in the Arc Deep-Penetration                                               
  • Electron Beam and Laser Welds Gas Metal Arc Welding                                  
  • Submerged Arc Welding    

Transfer of Heat and Mass to the Base Metal in Gas-Metal Arc Welding

  • Heat Transfer                                                                                                       
  • Mass Transfer                                                                                                      
  • Procedure Development  

Arc Physics of Gas-Tungsten Arc Welding                                                                  

  • Ratings and Standards Power Source Selection                                              
  • Source Characteristics Pulsed Power Supplies                                                
  • Resistance Welding Power Sources                                                              
  • Electron-Beam Welding Power Sources

Week 2

Fundamentals of Weld Solidification                                                            

  • Comparison of Casting and Welding Solidification                                          
  • Solidification of Alloy Welds (Constitutional Supercooling)                   
  • Development of Weld Microstructures                                                                 
  • Effect of Welding Rate on Weld Pool Shape and Microstructure                        
  • Nonequilibrium Effects: High-Rate Weld Solidification and Composition Banding  

 Nature and Behavior of Fluxes Used for Welding                                    

  • Equilibrium Parameters Effect of Oxygen                                                          
  • Basicity Index                                                                                         
  • Pyrochemical Kinetics During Welding                                                               
  • Alloy Modification     

Types of Fluxes                                                                                                

  • Fluxes Used For SMAW Applications          
  • Typical Functions and Compositions of Constituents for Selected Mild Steel SMAW Electrode Coatings
  • Typical Composition of  Minerals Used In SMAW Electrode Coatings
  • Chemical Composition of  Coverings Used in Electrodes For SMAW Welding Of Mild Steels and Low-Alloy Steels
  • Typical Flux Compositions of Available Self-Shielded SMAW Electrodes.
  • Typical Compositions of SMAW Fluxes

Shielding Gases for Welding

  • Basic Properties of a Shielding Gas
  • Typical Gases Purity and Moisture Content of Shielding
  • Characteristics of the Components of a Shielding Gas  Blend
  • Shielding Gas Selection
  • Accuracy of Gas Blends  Shielding Gases for GMAW
  • Recommended Shielding Gas Selection for GMAW
  • Shielding Gas Selection for FCAW
  • Shielding Gas Selection for GTAW
  • Shielding Gas Selection for PAW
  • Recommended Guidelines for Selecting PAW Shielding Gases
  • Influence of Shielding Gas on Weld Mechanical Properties                        
  • Shielding Gas and Fume Generation                                                                   
  • Self-Shielded Flux-Cored Arc Welding

Week 3

Week 4

Week 5

Week 6

Week 7

Week 8

Week 9

Week 10

Week 11

Week 12

Week 13