Oxyfuel cutting 120101i Flashcards
Photoelectric cells and computer controls are used with ______tracer-guided cutting machines.
electronic
The rivet cutting tip is designed to:
cut off rivet and bolt heads without disturbing the parent metal.
Templates for magenetic tracers are made of:
steel
When piercing holes in a plate you should:
raise the tip when the cutting lever is depressed
Kerf draglines on a properly performed shape cut should be:
perpendicular to the plate surface
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.
True
Which cutting tip has the preheat orifices in a smaller pitch circle around the cutting orifice?
High-speed cutting tip
If a shop were to switch from acetylene to propane has for cutting, it would be necessary to:
Check with the manufacturer to determine if the equipment is compatible.
What is likely to happen if the cutting travel speed is too fast?
slag bubbles to the surface and the cutting action eventually stops.
What tools can you use to lay out a structural shape?
contour hammer, hammer and center punch, square and level, combination square.
ALL OF THE ABOVE
When a piece of metal is cut, it creates a cut gap called the:
Kerf
If you notice the preheat flames changing from neutral to carbonizing during the cutting process, the most likely cause would be that the:
oxygen cylinder is nearly empty
The larger the orifices of a cutting tip the:
thicker the plate that you can cut.
you can determine a good quality cut by:
inspecting the kerf lines
What is the likely problem if the kerf edges are melting back together behind the cut?
The tip is too large for material thickness.
Which oxyfuel torch design has the mixer chamber inside one of the rubes leading to the torch head?
premixing
On a combination cutting torch, the oxygen valve on the torch handle must be:
fully open
When preheating for flame cutting, the metal should be heated until it reaches its:
kindling point.
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?
cope one beam to fit inside the other
When the cut is rough and slag accumulates on the bottom edge, the likely cause is:
using a dirty tip.
which metals can you cut easily using the oxyfuel cutting process?
mild steels