Frage 1
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More people use the oxyfuel cutting torch than any other welding process.
Frage 2
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Low carbon steels are difficult to cut.
Frage 3
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Goggles or other suitable eye protection must be used for flame cutting.
Frage 4
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Oxygen need not be completely mixed with the fuel gas before they leave the tip and create the flame.
Frage 5
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Chrome plating causes spatter to stick to the tip, prolonging cleanup.
Frage 6
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Materials that are round or covered in rust require less preheat flame.
Frage 7
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Acetylene can be used in any tip.
Frage 8
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A tiny movement such as a heartbeat can cause a ripple in the cut.
Frage 9
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A slight forward torch angle keeps the tip clean for a longer period of time.
Frage 10
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A cutting torch should never be used to cut open a sealed container.
Frage 11
Frage
The mixing chamber may be located in ______.
Antworten
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the torch body or the tip
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a separate location in the weldin shop
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the portable mixing machine
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the oxygen tube
Frage 12
Frage
Which of the following determines the amount of preheat flame required to make a cut?
Antworten
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Arc length, material thickness and cutting tip diameter
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Amperage, cutting tip diameter, and type of fuel gas
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Material shape, arc length, and amperage
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Type of fuel gas, material thickness, shape and surface condition
Frage 13
Frage
Acetylene is used in tips having ______ preheat holes.
Antworten
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one to three
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one to six
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three to five
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three to eight
Frage 14
Frage
When removing a cutting tip, if the tip is stuck in the torch head, _______.
Antworten
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cut of the tip and discard it
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discard the torch head
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tap the back of the head with a plastic hammer
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tap the side of the tip with a plastic hammer
Frage 15
Frage
If the cutting tip seat or the torch head seat is damaged, _____.
Antworten
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it must be discarded
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it can be repaired using a plastic hammer
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it can be repaired using a rearmer
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it can be cut apart and welded back together
Frage 16
Frage
If a large cutting tip pops when the acetylene is turned off, ______.
Antworten
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turn the oxygen off first
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turn the acetylene back on
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it is defective and must be discarded
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it must be repaired
Frage 17
Frage
When a left-handed welder is making a cut with a hand torch, the torch should be braced _______.
Antworten
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with the left hand
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with both hands
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with a clamp
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with the right hand
Frage 18
Frage
The kindling temperature of iron is _______.
Antworten
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600 degrees Fahrenheit
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1000 degrees Fahrenheit
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1200 degrees Fahrenheit
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1600 degrees Fahrenheit
Frage 19
Frage
When metal is burned away, ______.
Antworten
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oxygen forms an iron oxide
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oxygen forms iron dioxide
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the iron turns to cast iron
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the iron turns to oxygen
Frage 20
Frage
_____ is produced by the metal as it burns.
Frage 21
Frage
If the cutting stream is too fast, _______.
Antworten
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the cutting stream may gouge the side of the cut
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the top edge may be melted or rounded off
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the cut may be incomplete
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the sides of the kerf may be dished
Frage 22
Frage
If the pressure setting is too high, ______.
Antworten
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the cutting stream may gouge the side of the cut.
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the top edge may be melted or rounded off
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the cut may be incomplete
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the sides of the kerf may be dished
Frage 23
Frage
______ contains little or no unoxidized iron.
Antworten
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Soft slag
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Hard slag
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Magnesium
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Zinc
Frage 24
Frage
Most hand torches will not easily cut metal that is more than _____ inches thick.
Antworten
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three to five
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five to seven
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seven to ten
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ten to twelve
Frage 25
Frage
______ is when metal bends or twists out of shape as a result of being heated during the cutting process.
Antworten
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Hardening
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Bending
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Dishing
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Distortion