Podcast
Questions and Answers
Which of the following is true about brazing?
Which of the following is true about brazing?
- Brazing can only join similar metals.
- Brazing requires a melting point higher than 1800 °F.
- Brazing requires less heat than welding. (correct)
- Brazing is used for critical structural repairs on aircraft.
Which metals can be joined by brazing?
Which metals can be joined by brazing?
- Aluminum and titanium.
- Iron and Aluminum
- Gold and Magnesium
- Copper and steel. (correct)
What is the strongest type of brazed joint?
What is the strongest type of brazed joint?
- A joint with no flux.
- A joint with a loose fit.
- A joint with high heat.
- A joint with a close fit. (correct)
Which type of joint is NOT recommended for silver soldering?
Which type of joint is NOT recommended for silver soldering?
What type of flame is recommended for silver soldering?
What type of flame is recommended for silver soldering?
Which type of tungsten electrode is most suitable for DC operations on transformer-based TIG welding machines?
Which type of tungsten electrode is most suitable for DC operations on transformer-based TIG welding machines?
Which of the following is true about flux in brazing?
Which of the following is true about flux in brazing?
What is the purpose of preheating the base metal in brazing?
What is the purpose of preheating the base metal in brazing?
Why is controlling the temperature of the base metal important in brazing?
Why is controlling the temperature of the base metal important in brazing?
Which alloys typically work with brazing products that have the flux contained in hollow spaces in the filler metal itself?
Which alloys typically work with brazing products that have the flux contained in hollow spaces in the filler metal itself?
How is cleaning after brazing accomplished?
How is cleaning after brazing accomplished?
What is the most common general-purpose solder?
What is the most common general-purpose solder?
Which of the following is NOT a recommended step in TIG welding 4130 steel tubing?
Which of the following is NOT a recommended step in TIG welding 4130 steel tubing?
What is the purpose of preheating and post-weld heat treatment in TIG welding 4130 steel tubing?
What is the purpose of preheating and post-weld heat treatment in TIG welding 4130 steel tubing?
Which filler metal alloy is suitable for welding austenitic type stainless steel?
Which filler metal alloy is suitable for welding austenitic type stainless steel?
Which type of gas is preferred for TIG welding aluminum?
Which type of gas is preferred for TIG welding aluminum?
What is the purpose of back purging during the welding process?
What is the purpose of back purging during the welding process?
Which type of polarity is preferred for manual welding operations of magnesium?
Which type of polarity is preferred for manual welding operations of magnesium?
What is the recommended distance between the tungsten tip and the surface of the material when TIG welding aluminum?
What is the recommended distance between the tungsten tip and the surface of the material when TIG welding aluminum?
What are the recommended welding beads and welding speed for welding magnesium alloys?
What are the recommended welding beads and welding speed for welding magnesium alloys?
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