Welding Techniques and Terminology Quiz

A type of hardness test that uses a hardened steel ball to indent the material being tested.

Stainless steels are defined as having at least 12% chromium.

The process where carbon is added to the surface of a steel to harden it.

The flux coating of a SMAW electrode serves multiple purposes including insulating the arc, adding alloying elements to the weld, and shielding the weld pool from the atmosphere.

The lead angle is defined as the angle between the electrode and the base metal when viewed from the end plane.

Undercutting is a problem that can be corrected by reducing the current.

Too low amperage when arc welding causes insufficient penetration of the base metal, resulting in a weak weld.

Cast iron is a metal that is considered brittle.

The ability of a metal to withstand forces, sudden shock or bends without fracturing.

Refers to how well a metal can withstand forces acting to cut it apart.

The ability of a metal to resist being twisted apart.

The ability of a metal to resist fracture under a sudden load.

The process of rapidly cooling a metal to change its properties.

A metal with one or more elements added to it.

The metal to be joined or welded together.

The discharge of electricity through an air space.

The ability of a metal to be permanently twisted or bent without breaking.

The process of welding with an electrode that melts and becomes part of the weld.

A type of weld test that involves physically bending the weld to determine its strength.

A type of welding machine that can provide both AC and DC current for welding.

The protective layer that forms on top of a weld as it cools.

The amount of time a welding machine can operate at its rated output before it needs to cool down.

The last digit in the electrode number indicates the special characteristics of the electrode.

A metal that contains iron as its primary component.

A type of arc welding in which a continuous wire electrode is fed through a welding gun, and a shielding gas covers the molten weld pool.

The gas is used to protect the weld pool from contamination while welding.

CO2 is a shielding gas commonly used in MIG welding. It provides good penetration but can create a more porous weld than Argon.

Argon is a shielding gas commonly used in MIG welding. It offers better weld quality than CO2 but can be expensive.

MIG welding is typically used to join thinner gauge metal.

The welding gun is a key tool for MIG welding.

A weld defect is identified as an irregularity present in the welded joint.

A method of arc welding that uses a non-consumable tungsten electrode and an inert shielding gas.

Fire extinguishers designed to put out fires caused by ordinary combustibles like wood, paper, or cloth.

Fire extinguishers designed to put out fires caused by flammable liquids like oil, gasoline, or grease.

Fire extinguishers designed to put out fires caused by energized electrical equipment.

A method of starting the arc by touching the electrode to the metal and then quickly lifting it away.

A method of starting the arc by dragging the electrode across the metal.

A single layer of filler metal deposited during the welding process.

The first pass made in a welding joint, usually on the bottom or inside of the joint.

A type of weld that joins two pieces of metal at an angle, creating a V or U-shaped joint.

The process of coating a metal with a layer of zinc to prevent corrosion.

The electrical output of a welding machine is typically characterized by a lower voltage and higher amperage.

A chipping hammer is used to remove slag, the hard residue that forms on top of a weld.

A welding helmet is essential for protecting the eyes from the intense light and UV radiation emitted by the welding arc.

The temperature of a welding arc can reach up to 9000 degrees Fahrenheit!

Welding tables are typically made of metal because it provides a stable and durable surface that can withstand the high temperatures and forces involved in welding.

Fire blankets are the best choice for extinguishing burning clothes because they can quickly smother the flames and prevent further contact with the body.

Water can be helpful in a welding area for several reasons, including cooling metal, extinguishing fires, and receiving sparks from piercing operations.