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Welding > Cutting Chapter 2 > Flashcards

Cutting Chapter 2 Flashcards

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Welding Inspection Basics flashcards
1
Q

Welding boots should be what?

A

8” or taller high-top shoes or boots

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2
Q

Make sure your boots what?

A

The tongue and lace area of the footwear will be covered by a pant leg.

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3
Q

Before cutting containers such as tanks or barrels, check to see what?

A

If they have contained any explosive, hazardous, or flammable materials.

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4
Q

Example containers can have?

A

Petroleum Products
Citrus Products
Chemicals that decompose into toxic fumes when heated.

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5
Q

For long-term cutting of such materials, always wear…

A

approved full face, supplied-air respirator (SAR) that using breathing air supplied externally of the work area.

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6
Q

Oxygen (O2) is

A

a colorless, odorless, tasteless gas that supports combustion.

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7
Q

Combined with burning material, pure oxygen causes

A

a fire to flare and burn out of control.

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8
Q

The cylinders must be tested every

A

10 years

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9
Q

When combined with Oxygen, Acetylene create a flame that burns

A

hotter than 5,500F

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10
Q

Oxygen, Acetylene

A

is one of the hottest flames.

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11
Q

Acetylene cylinders have what

A

safety plugs in the top and bottom of the cylinder

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12
Q

Melting point of cylinder safety plugs melt at

A

212 F

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13
Q

In the event of a fire, the fuse plugs will

A

release the acetylene gas, preventing the cylinder from exploding.

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14
Q

A Dow Chemical Company product that is a chemical combination of acetylene and propane gases.

A

MAPP

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15
Q

Hydrocarbon-based gases that are stable and shock-resistant, making them relatively safe to use.

A

Propylene Mixtures

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16
Q

Acetylene

A

More than 5,500 F

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17
Q

Propylene

A

5,130 F

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18
Q

If high volumes of gas are removed from a liquefied fuel gas cylinder,

A

the pressure drops, and the temperature of the cylinder will also drop.

19
Q

Oxygen regulators differ from

A

fuel gas regulators.

20
Q

Fuel Gas regulators may have

A

red markings and usually have left-hand threads on all the connections.

21
Q

As a reminder that the regulator has left hand threads,

A

a V-notch may be cut around the nut.

22
Q

The fuel gas regulator’s high-pressure gauge usually reads up to?

A

usually reads up to 400 psi.

23
Q

Hoses transport gases from..

A

the regulators to the torch.

24
Q

Oxygen hoses are usually what

A

green with right hand threaded connections.

25
Q

Hoses for fuel gas are usually

A

red and have left-hand threaded connections.

26
Q

The fuel gas connections may also be

A

grooved as a reminder that they have left-handed threads.

27
Q

The combination torch consists of a cutting torch attachment that..

A

fits onto a welding torch handle.

28
Q

Combination torches are normally used in

A

light-duty or medium duty applications.

29
Q

On combination torches, fuel gas and oxygen valves are on

A

the torch handle.

30
Q

The cutting attachment on a combination torch has a

A

cutting oxygen level and another oxygen valve to contol the preheat flame.

31
Q

Rivet cutting tips are used ti

A

cut off rivet heads, bolt heads and nuts.

32
Q

When does equipment have to be tested for leaks immediately

A

after it is set up and periodically thereafter.

33
Q

The torch should be checked for leaks

A

each time before use.

34
Q

Could cause a fire or explosion if undetected.

A

Leaks

35
Q

A flame has a white feather created by excess fuel.

A

A carburizing flame.

36
Q

The length of the feather depends on the amount of excess….

A

fuel resent in the flame.

37
Q

When a cutting job is completed, and the oxyfuel equipment is no longer needed,

A

It must be shut down.

38
Q

Thin steel is

A

(3/16) “ thick or less.

39
Q

A major concern when cutting thin steel is

A

distortion caused by the heat of the torch and the cutting process.

40
Q

To minimize distortion when cutting thin steel.

A

move as quickly as you can without losing the cut.

41
Q

Is the process of cutting a groove into a surface.

A

Gouging.

42
Q

Are basic guidance systems driven by a variable speed electric motor to enable the operator to cut or bevel straight lines at any desired speed.

A

Machine oxyfuel gas cutters or track burners

43
Q

Has an excess of oxygen.

A

Oxidizing flame.

44
Q

Oxyfuel flame types

A

Neutral
Carburizing
Oxidizing

Welding (20 decks)

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