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Sheetmetal > Week 10 > Flashcards

Week 10 Flashcards

(52 cards)

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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

22
Q

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

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A

Counter clockwise

23
Q

it indicates the cylinder supply pressure

Study These Flashcards
A

High pressure gage

24
Q

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

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A

Low pressure gage

25
they are where the welding hoses are attached
Outlet connection
26
it transport low pressure gases from the regulators to the torch
Hoses
27
Oxygen hoses are color
Green
28
Fuel hoses are color
Red
29
All approved fabricated hoses are
Flame retardant
30
This serves as preservative for the new hoses
Talcum powder
31
it is essentially a set of gas tubes with control valves
Welding torch handle
32
It controls the acetylene supply for the tip or attachment
Welding torch handle
33
there are two control valves marked as ___ and ___
Fuel or gas Oxy
34
it is designed to keep the oxygen and acetylene gases separated
Barrel
35
oxygen supply move through the ____to the torch head
Inner tube
36
acetylene supply travels through the
Exterior cavity
37
it is threaded onto the barrel
Torch head
38
The oxygen supply is directed through the ______ from the ______ while the fuel or acetylene passes through the _____ around the oxygen port.
Center hole Inner tube Drilled orifice
39
is an assembly with cone and mixer with coupling nut
Welding tip
40
Welding tip is an assembly with ____and _____ with _____
Cone Mixer Coupling nut
41
The welding tip is a ____tube that has been drilled on one end and swaged to a specific orifice size
Copper
42
designed to mix the oxygen and acetylene gases
Cone and mixer
43
Repeated cleaning of the orifice tip may ____ the original size
Alter
44
(Accessories) it is used to light the tip.
Spark lighter
45
(Accessories) they are for the protection of the eyes from the glare produced by the flame during the welding process.
Goggles
46
Cylinders are to be kept in a _____ position.
Vertical
47
It appear if leak is present
Bubbles
48
forehand welding, also called
Puddle or ripple welding
49
ideal for thin plate; it permits better control of a small puddle and results in a smoother weld
Forehand welding
50
(Welding) you point the flame in the direction of travel
Forehand welding
51
(Welding) you point the flame away from the direction of travel and back at the molten puddle and completed weld
Backhand welding
52
(Welding) best suited for material more than 1/8 of an inch thick.
Backhand welding

Sheetmetal (7 decks)

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