Difficulty: Easy
Correct Answer: from left to right
Explanation:
Introduction / Context:
Oxy–acetylene welding uses distinct techniques: forehand (leftward) and backhand (rightward). Knowing the correct travel direction improves heat distribution, puddle control, and joint quality, especially on thin sheets.
Given Data / Assumptions:
Concept / Approach:
In forehand welding, the torch points in the direction of travel, preheating the joint ahead of the puddle. The conventional description is left-to-right travel (hence leftward), ideal for thin sections due to broader preheating and lower risk of burn-through. Backhand welding is the reverse, commonly used for thicker sections.
Step-by-Step Solution:
Verification / Alternative check:
Welding training manuals define forehand as leftward travel with specified torch and rod angles conducive to sheet work.
Why Other Options Are Wrong:
Common Pitfalls:
Confusing torch angle and rod angle; mixing up forehand/backhand names versus the actual movement on the workpiece.
Final Answer:
Discussion & Comments