Knowledge of Motor Vehicle Body Metal Active Gas (MAG) Welding Techniques


Unit Reference Number:     T/601/5432

Learning OutcomesAssessment Criteria
1Understand how to work safely when carrying out motor vehicle body MAG welding operations1.1Describe the health, safety and legal requirements relating to the joining of carbon steels using MAG welding techniques
1.2Describe the importance of selecting, using and maintaining the appropriate personal protective equipment when joining carbon steels using MAG welding techniques
1.3Describe the requirements for protecting the vehicle and contents from damage before, during and after the joining of carbon steels by MAG welding techniques
2Understand how to select, check, use and maintain appropriate tools and equipment used in motor vehicle body MAG welding operations2.1Explain the use of all tools and equipment required to join carbon steels using MAG welding techniques
2.2Describe, within the scope of their responsibilities, how to select, prepare and maintain the tools and equipment required to join carbon steels using MAG welding techniques
3Understand how to carry out motor vehicle body MAG welding operations3.1Explain the importance of correct surface preparation methods to ensure a good MAG weld is achieved
3.2Identify the need for correct alignment and mating of carbon steels and the methods used to achieve this in MAG welding
3.3Describe the welding techniques used in MAG welding to include:

a. plug

b. lap

c. butt

d. fillet

3.4Identify the faults and defects that can occur when MAG welding
3.5Identify common causes which result in faults and defects
3.6Describe the quality control measures that can be used to help ensure correct joining of carbon steels before, during and after the welding process
3.7Describe how to inspect and assess MAG welding in accordance to Industry Standards
3.8Compare the advantages and disadvantages of MAG welding over other welding methods
3.9Explain the importance and implications of checking and carrying out weld test pieces prior to carrying out the welding process