Podcast
Questions and Answers
What is the most common defect caused by welding on contaminated metal?
What is the most common defect caused by welding on contaminated metal?
- Surface corrosion
- Cracks
- Surface porosity (correct)
- Toxic fumes
Why is mechanical cleaning important before welding?
Why is mechanical cleaning important before welding?
- To prevent metal from getting too hot
- To create designs on the metal surface
- To ensure quality welds by removing contaminants and oxides (correct)
- To remove toxic fumes
What type of joint requires the least base metal edge preparation?
What type of joint requires the least base metal edge preparation?
- Lap joint (correct)
- Corner joint
- T-joint
- Edge joint
When might welders need to resort to chemical cleaning?
When might welders need to resort to chemical cleaning?
What happens when metal is exposed to air for a prolonged period?
What happens when metal is exposed to air for a prolonged period?
Which type of weld is characterized by gas pockets or voids in the weld metal?
Which type of weld is characterized by gas pockets or voids in the weld metal?
What is the main purpose of surfacing in welding?
What is the main purpose of surfacing in welding?
What is the maximum size allowed for the root opening and root face in open root welds on plate?
What is the maximum size allowed for the root opening and root face in open root welds on plate?
What is the purpose of backing strips in welding?
What is the purpose of backing strips in welding?
Which welding position is considered an in position weld?
Which welding position is considered an in position weld?
When welding a fillet weld, what letter is added to the back of the position?
When welding a fillet weld, what letter is added to the back of the position?
What must be written for each weld if codes are mandated?
What must be written for each weld if codes are mandated?
