Welding Module 4-KL

Front

What is the purpose of a rare-earth metal in A-CAC electrodes?

Back

Rare-earth metals are used in A-CAC electrodes to stabilize the arc during welding.

Front

How many directions can torches with special washing heads cut from?

Back

Torches with special washing heads can cut from one direction.

Front

What is the washing process used for in welding?

Back

Washing is used to prepare the surface of the base metal by removing objects and projections from the surface.

Front

What is one of the primary uses for air-carbon arc cutting (A-CAC)?

Back

One of the primary uses for A-CAC is to gouge out defective welds.

Front

What do dross or carbon deposits combine with the base metal to form?

Back

Dross or carbon deposits combine with the base metal to form hard brittle zones and porosity.

Front

What is the function of arc stabilizing ingredients in welding electrodes?

Back

Arc stabilizing ingredients help maintain a consistent and stable arc during the welding process.

Front

What is the significance of copper coating on A-CAC electrodes?

Back

Copper coating on A-CAC electrodes enhances conductivity and helps in arc stability.

Front

What is the effect of porosity in welded joints?

Back

Porosity in welded joints can lead to weak spots and reduced strength in the weld.

Front

What is gouging in the context of welding?

Back

Gouging is the process of removing material from a workpiece, often used to prepare for welding or repair.

Front

What are the potential consequences of not removing dross before welding?

Back

Not removing dross can lead to poor weld quality, including hard brittle zones and porosity.