Oxyfuel cutting 120101i

Question 1

Photoelectric cells and computer controls are used with ______tracer-guided cutting machines.

Answer 1

electronic

Question 2

The rivet cutting tip is designed to:

Answer 2

cut off rivet and bolt heads without disturbing the parent metal.

Question 3

Templates for magenetic tracers are made of:

Answer 3

steel

Question 4

When piercing holes in a plate you should:

Answer 4

raise the tip when the cutting lever is depressed

Question 5

Kerf draglines on a properly performed shape cut should be:

Answer 5

perpendicular to the plate surface

Question 6

T OR D: When cutting structural shapes, it is important to remember to watch your torch angle. A torch angle that is off can cause a structural shape to be cut incorrectly, which could result in a scrapped piece.

Answer 6

True

Question 7

Which cutting tip has the preheat orifices in a smaller pitch circle around the cutting orifice?

Answer 7

High-speed cutting tip

Question 8

If a shop were to switch from acetylene to propane has for cutting, it would be necessary to:

Answer 8

Check with the manufacturer to determine if the equipment is compatible.

Question 9

What is likely to happen if the cutting travel speed is too fast?

Answer 9

slag bubbles to the surface and the cutting action eventually stops.

Question 10

What tools can you use to lay out a structural shape?

Answer 10

contour hammer, hammer and center punch, square and level, combination square.

ALL OF THE ABOVE

Question 11

When a piece of metal is cut, it creates a cut gap called the:

Answer 11

Kerf

Question 12

If you notice the preheat flames changing from neutral to carbonizing during the cutting process, the most likely cause would be that the:

Answer 12

oxygen cylinder is nearly empty

Question 13

The larger the orifices of a cutting tip the:

Answer 13

thicker the plate that you can cut.

Question 14

you can determine a good quality cut by:

Answer 14

inspecting the kerf lines

Question 15

What is the likely problem if the kerf edges are melting back together behind the cut?

Answer 15

The tip is too large for material thickness.

Question 16

Which oxyfuel torch design has the mixer chamber inside one of the rubes leading to the torch head?

Answer 16

premixing

Question 17

On a combination cutting torch, the oxygen valve on the torch handle must be:

Answer 17

fully open

Question 18

When preheating for flame cutting, the metal should be heated until it reaches its:

Answer 18

kindling point.

Question 19

A skid unit requires two S shapes to be welded together to create a 90-degree angle. How can you cut the S shapes to create the required fit up?

Answer 19

cope one beam to fit inside the other

Question 20

When the cut is rough and slag accumulates on the bottom edge, the likely cause is:

Answer 20

using a dirty tip.

Question 21

which metals can you cut easily using the oxyfuel cutting process?

Answer 21

mild steels