Day 1 Progress Check: Welding and Procedures Flashcards
(15 cards)
What safety measure is emphasized in the handling of hydrogen and oxygen gases in welding procedures?
They must be secured and only unchained during use.
Which technique is essential to apply when repairing a crack in steel tubing using a butt joint?
Drilling the ends of the crack to prevent further spreading
What is a critical step in preparing a steel tubing patch for welding repairs?
Ensuring the patch extends at least 1.5 times the tube’s diameter over the joints.
Why should acetylene cylinders be stored upright?
To avoid contaminating the regulator hose and torch
Which of the following best describes the correct handling of filler rods to prevent welding defects?
Keep them clean and store them in a dry, warm place.
What distinguishes a lap joint from a butt joint in terms of structural application?
A lap joint is stronger and used for overlapping metal sheets; a butt joint joins end to end.
For what reason is the edge joint typically used in metalworking?
It joins the edges of two metal sheets where load stress is low.
What is the key characteristic of a properly formed weld bead?
It should be smooth with even ripples and evenly spaced.
What distinguishes TIG welding from MIG welding regarding the materials typically welded?
TIG is particularly suited for materials like stainless steel and aluminum.
Why is inert gas used in electric arc welding?
To displace atmospheric gases that could affect weld quality
What is the primary purpose of using a filler rod in oxy-acetylene welding?
To add material to the weld pool to ensure a robust joint
Which of the following statements best explains why oxy-acetylene welding is advantageous for repairing aircraft parts?
The high temperature allows for strong, durable welds on various metals.
Why is it important to use a gap equal to the thickness of the metal when forming tee joints in aircraft?
To ensure thorough penetration and strength of the weld.
How does the addition of hydrogen gas affect the process of oxy-acetylene welding of aluminum?
It decreases the temperature needed for creating a molten state.
In terms of safety, why must oxygen never come into contact with oil or grease?
It can cause the oxygen to become highly flammable and explosive.
