When tiny pockets of primarily ____ gas get hot and expand, they can cause weld porosity.
A) carbon
B) oxygen
C) carbon monoxide
D) carbon dioxide
Correct Answer:
Verified
Q3: Turn off all power before attempting to
Q4: Severe GTA welding porosity is usually only
Q5: Welds with only slight oxide layers are
Q6: The faster that the torch is moved
Q7: The high thermal conductivity of _ rapidly
Q9: It is possible to determine the extent
Q10: It is desirable to take the time
Q11: The high surface tension of molten _
Q12: To reduce the possibility of carbide precipitation,
Q13: The surface of a mild steel weld
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