Ramsay Test Welding and Metal Working 4

Question 1

What does the term 'kerf' refer to in metal cutting?

Accepted Answer

The width of material removed by the cut

Answer

Kerf is the width of the slot left behind by a cutting tool or torch.

Question 2

Which process joins metal without melting the base metal, using a filler with a lower melting point?

Accepted Answer

Brazing

Answer

Brazing joins metals with a filler alloy that melts below the base metal's melting point.

Question 3

What is the heat-affected zone (HAZ) in welding?

Accepted Answer

Base metal whose properties were changed by welding heat

Answer

The HAZ is the region near the weld where heat altered the metal's microstructure without melting it.

Question 4

Which metal is most resistant to rust due to its chromium content?

Accepted Answer

Stainless steel

Answer

Stainless steel contains chromium that forms a protective oxide layer resisting corrosion.

Question 5

What causes 'undercut' along the edge of a weld?

Accepted Answer

Excessive heat melting away the base metal edge

Answer

Undercut is a groove melted into the base metal next to the weld from too much heat.

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