Welding Techniques and Tools

What is a stick welder and how does it operate?

• A stick welder is a gas-powered tool that uses flames to join metals.

• A stick welder is a type of robotic machine that automatically welds without human intervention.

• A stick welder is a handheld device that uses magnets to fuse metal pieces together.

• A stick welder is a type of welding machine that uses an electric arc to melt a consumable electrode and join metal pieces.

Explain the operation of a MIG welder.

• A MIG welder uses a solid rod and no gas to create a weld.

• A MIG welder uses a continuous wire electrode and shielding gas to create a weld through an electric arc.

• A MIG welder requires a separate power source and does not use electricity.

• A MIG welder operates by melting two pieces of metal together using a hammer.

Describe how a TIG welder functions.

• A TIG welder uses a carbon electrode and water for cooling.

• A TIG welder creates an electric arc between a tungsten electrode and the workpiece, using inert gas for shielding and a filler rod for welding.

• A TIG welder operates by applying pressure to fuse metals together.

• A TIG welder relies on a gas flame to melt the metal.

What is the process involved in Flux-Cored Arc Welding (FCAW)?

• The process involves preparing workpieces, selecting wire, setting parameters, initiating the arc, feeding wire, and completing the weld.

• Cooling the weld with water immediately after

• Using only solid wire for welding

• Welding without any preparation of the workpieces

How does a plasma cutting machine work?

• A plasma cutting machine relies on a laser beam to cut through materials.

• A plasma cutting machine uses water to cool the metal while cutting.

• A plasma cutting machine uses an electric arc to ionize gas and create a high-temperature plasma stream that cuts through metal.

• A plasma cutting machine operates by melting metal with a heated blade.

Define the function of an oxy-fuel cutting torch.

• To measure the thickness of metal sheets.

• The function of an oxy-fuel cutting torch is to cut metal by using a flame produced from the combustion of oxygen and a fuel gas.

• To heat metal for welding purposes.

• To create a protective gas shield for welding.

What is the purpose of a spot welder?

• To paint metal surfaces for protection.

• To cut metal pieces into smaller sizes.

• The purpose of a spot welder is to join metal pieces together through localized heating and pressure.

• To heat metal for forging purposes.

Explain how a resistance welder operates.

• A resistance welder operates by cooling the metal pieces before joining them.

• A resistance welder joins metal pieces by generating heat through electrical resistance at the joint, using pressure to create a strong bond.

• A resistance welder uses a flame to melt metal pieces together.

• A resistance welder relies on magnetic fields to fuse metal parts.

Describe the function of a welding table.

• The function of a welding table is to provide a stable and flat surface for welding and assembling metal parts.

• To serve as a decorative piece in a workshop.

• To store welding tools and equipment.

• To provide a source of electricity for welding machines.

What type of power does a stick welder use?

• Solar power

• Direct current (DC) or alternating current (AC)

• High frequency (HF)

• Battery power