PART A Wire Feed Welding Equipment and Consumables

Which of the following is a primary process of wire feed welding that uses short circuit transfer and a external shielding gas (e.g., Argon, CO₂)?

• FCAW

• GMAW (MIG welding)

• SAW

• SMAW

FCAW stands for ________ and uses flux-cored wire with or without external shielding gas.

• Flux-cored arc welding

• Fused-core aluminum welding

• Fast current arc welding

• Filament core alloy welding

Which wire feed welding process is submerged under granular flux and is often used for automated applications?

• GMAW

• FCAW

• MCAW

• SAW

Match the wire feed system component to its function:

• Provides DC current (typically CV output).

• Wire Feeder

• Delivers current, gas, and wire to the arc.

• Contact Tip

• Transfers current to the wire (size-matched).

• Shielding Gas

• Protects weld pool from oxidation (CO₂ for steel, Ar for Al).

• Power Source

• Pushes/pulls wire at controlled speeds.

• Welding Gun

The shielding gas in a wire feed welding system protects the weld pool from _________?

• oxidation

• contamination by water

• excessive heat

• mechanical damage

What should you do to prevent shock risks?

• Insulate yourself from workpiece, use GFCI breakers.

• Wear metal jewelry while working.

• Work with wet hands.

• Ignore safety protocols.

What is the mitigation for exposure to Ozone (O3)?

• Local exhaust ventilation.

• Increase humidity in the room.

• Use carbon monoxide detectors.

• Wear ear protection.

What is the mitigation for exposure to Phosgene gas?

• Ban solvents near welding.

• Increase humidity in the area.

• Use carbon dioxide fire extinguishers.

• Apply ice packs to affected area.

What type of gloves are required for safety?

• Heat-resistant leather (gauntlet style).

• Cotton disposable gloves.

• Mechanics gloves.

• Woolen winter gloves.

What type of clothing is required for safety?

• Flame-retardant coveralls.

• Short-sleeved cotton shirts.

• Polyester t-shirts.

• Open-toed sandals.