Metal Preparation

What must base metal be free of during metal preparation?

• base metal must be free of impurities or contaminants during metal preparation.

• base metal must be free of moisture during metal preparation.

• base metal must be free of air during metal preparation.

• base metal must be free of heat during metal preparation.

Which of the following is a surface contaminant that must be removed from base metal?

• Coatings

• Paint

• Rust

• Oil

When welding out of position, where should the currents be used?

• On the lower side of the recommended range

• On the higher side of the recommended range

• At the midpoint of the recommended range

• At any point within the recommended range

What happens when the electrode tip fuses to the workpiece?

• The welding process stops

• The electrode becomes part of the workpiece

• The workpiece is damaged

• The electrode tip melts completely

Fill in the blank: The electric current jumps the gap and creates an arc, which is guided along the weld joint, melting both ______ and electrode.

• metal

• plastic

• wood

• glass

What happens if the arc length is too long?

• Spatter increases

• Undercut may occur

• Both A and B

• None of the above

In the 'Drag' technique, the electrode points away from the direction of weld progression. True or False?

• True

• False

What effect does side-to-side movement have on travel speed along a joint?

• Increases inches per minute

• Decreases inches per minute

• Has no effect

• Doubles the speed

What is the maximum width of weave beads in relation to electrode diameter?

• 4 times

• 5 times

• 2 times

What happens to travel speed and heat input when more time is taken to progress along the weld joint?

• Increases travel speed, decreases heat input

• Decreases travel speed, increases heat input

• No change