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Sheetmetal > Week 10 > Flashcards

Week 10 Flashcards

1
Q

It joins metal by melting them together by the heat of a torch

A

Oxy-acetylene welding

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2
Q

It is useful when it is necessary for the equipment to be portable when welding relatively thin materials or when amount of heat applied must be varied and controlled

A

Oxy-acetylene welding

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3
Q

Oxy-acetylene also known as

A

Gas

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4
Q

It is the most common form of welding

A

Oxy-acetylene welding

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5
Q

The process of joining two pieces by partially melting their surfaces and allowing them to flow together is called

A

Fusion

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6
Q

The other 2 fusion processes are

A

Electric arc welding
Thermit welding

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7
Q

In the oxy-acetylene process, the metal is heated by the _______

A

Hot flame of a gas-fed torch

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8
Q

_____ clothing must be worn by the operator

A

Flame-resistant

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9
Q

____ and ____ should not be done near flammable materials such as wood, oil waste or cleaning rags

A

Welding
Cutting

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10
Q

These supplied from cylinders to provide the flame

A

Oxygen and acetylene gas

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11
Q

These control the flow of the gases

A

Regulators and valves

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12
Q

It measures the pressure of the gas

A

Gage

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13
Q

It carry the gases to the torch

A

Hoses

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14
Q

It mix the gases and provide a handle for directing the flame

A

Torch

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15
Q

It control the flame

A

Tip

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16
Q

Full oxygen cylinders are pressurized from ____ to _____

A

2000 to 2600 psig

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17
Q

It reduces high pressure to suitable working pressures

A

Regulators

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18
Q

all connections conform to specifications and standards set
by the compressed gas association

A

Inlet connection

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19
Q

_______connections have right hand
threads

A

Fuel gas

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20
Q

it control the flow of gas and delivery pressure to the hose and torch

A

Pressure adjusting screw

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21
Q

When the adjusting screw is turned ______, it will allow gas to flow through the regulator to the hoses and torch

A

Clockwise

22
Q

If it is turned ______, the regulator will not allow the gas to flow

A

Counter clockwise

23
Q

it indicates the cylinder supply pressure

A

High pressure gage

24
Q

it indicates the delivery pressure from the regulator to the
hose and torch

A

Low pressure gage

25
Q

they are where the welding hoses are attached

A

Outlet connection

26
Q

it transport low pressure gases from the regulators to the torch

A

Hoses

27
Q

Oxygen hoses are color

A

Green

28
Q

Fuel hoses are color

A

Red

29
Q

All approved fabricated hoses are

A

Flame retardant

30
Q

This serves as preservative for the new hoses

A

Talcum powder

31
Q

it is essentially a set of gas tubes with control valves

A

Welding torch handle

32
Q

It controls the acetylene supply for the tip or attachment

A

Welding torch handle

33
Q

there are two control valves marked as ___ and ___

A

Fuel or gas
Oxy

34
Q

it is designed to keep the oxygen and acetylene gases separated

A

Barrel

35
Q

oxygen supply move through the
____to the torch head

A

Inner tube

36
Q

acetylene supply travels through the

A

Exterior cavity

37
Q

it is threaded onto the barrel

A

Torch head

38
Q

The oxygen supply is directed through the ______ from the ______ while the fuel or acetylene passes through the _____ around the oxygen port.

A

Center hole
Inner tube
Drilled orifice

39
Q

is an assembly with cone and mixer with coupling nut

A

Welding tip

40
Q

Welding tip is an assembly with ____and _____ with _____

A

Cone
Mixer
Coupling nut

41
Q

The welding
tip is a ____tube that has been drilled on one end and swaged to a specific orifice size

A

Copper

42
Q

designed to mix the oxygen and acetylene gases

A

Cone and mixer

43
Q

Repeated cleaning of the orifice tip may ____ the original size

A

Alter

44
Q

(Accessories)
it is used to light the tip.

A

Spark lighter

45
Q

(Accessories)
they are for the protection of the eyes from the glare produced by the
flame during the welding process.

A

Goggles

46
Q

Cylinders are to be kept in a _____ position.

A

Vertical

47
Q

It appear if leak is present

A

Bubbles

48
Q

forehand welding, also called

A

Puddle or ripple welding

49
Q

ideal for thin plate; it permits better control of a small puddle and
results in a smoother weld

A

Forehand welding

50
Q

(Welding)
you point the flame
in the direction of travel

A

Forehand welding

51
Q

(Welding)
you point the flame away from the direction of travel and back at the molten puddle and completed weld

A

Backhand welding

52
Q

(Welding)
best suited for material more than 1/8 of an inch thick.

A

Backhand welding

Sheetmetal (7 decks)

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