Welding and Metal Working Flashcards

What is the function of a ground (work) clamp in arc welding?

Answer: Completes the electrical circuit back to the welder

The work clamp connects the workpiece to the welder to complete the electrical circuit.

Which weld position is generally the easiest to perform?

Answer: Flat position

The flat position lets gravity help the weld pool, making it the easiest to control.

What does annealing do to a metal?

Answer: Softens it and relieves internal stress

Annealing heats and slowly cools metal to soften it and relieve internal stresses.

Which defect appears as spatter scattered around a weld bead?

Answer: Excessive spatter from wrong settings

Spatter is droplets of metal thrown from the arc, often due to incorrect voltage or amperage.

What is the main alloying element in carbon steel that affects hardness?

Answer: Carbon

Carbon content determines the hardness and strength of carbon steel.

Why should welding be avoided near flammable materials?

Answer: Sparks and heat can ignite a fire

Welding produces sparks and intense heat that can easily ignite nearby combustibles.

A bevel cut on the edge of a thick plate before welding is made to do what?

Answer: Allow deeper weld penetration into the joint

Beveling the edges creates a groove that lets the weld penetrate fully through thick material.