19 Assignment: Understanding GMAW Defects and Discontinuities
The purpose of this assignment is to assess your understanding of GMAW defects and discontinuities: what they are, what causes them, and how they can be prevented.
Task
Answer the following questions. Provide clear and concise responses.
- How do crater cracks form?
- How can crater cracks be prevented?
- What causes toe cracks?
- What are the two main types of porosity?
- What can be done to reduce porosity in a weld?
- What are slag inclusions?
- How can slag inclusions be prevented in multiple pass welds?
- Which process is more likely to produce incomplete fusion: SMAW or GMAW in short circuiting mode, and why?
- What causes incomplete penetration?
- What is overlap, and how can it be prevented?
Please refer to your course materials, lectures, and relevant resources to provide accurate and well-informed answers to the questions. If you encounter any difficulties or have questions, feel free to reach out to your instructor for clarification.
Criteria for Success
This assignment will be assessed based on the accuracy and depth of your responses, as well as your ability to apply knowledge of GMAW defects and discontinuities to real-world scenarios. Demonstrating a solid understanding of GMAW defects and discontinuities will contribute to a higher grade.
