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Welding > Lesson 1 > Flashcards

Lesson 1 Flashcards

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1
Q

What is the primary purpose of pipe welding?

A

To join two or more pieces of pipe together to create a fluid-tight seal.

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2
Q

True or False: Pipe welding can only be done using one specific welding method.

A

False

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3
Q

Which welding process is commonly used for pipe welding?

A

TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding are commonly used.

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4
Q

Fill in the blank: The __________ is a device used to hold the pipe in place during welding.

A

welding fixture

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5
Q

What is a bevel in pipe welding?

A

A bevel is an angled edge on the pipe that allows for better penetration and fusion during welding.

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6
Q

What does the term ‘root pass’ refer to in pipe welding?

A

The first pass of weld metal deposited in the joint.

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7
Q

In pipe welding, what does the abbreviation ‘WPS’ stand for?

A

Welding Procedure Specification

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8
Q

Multiple choice: Which of the following is NOT a type of pipe joint?
A) Butt joint
B) Socket joint
C) Corner joint
D) T-joint

A

C) Corner joint

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9
Q

What is the role of a filler material in pipe welding?

A

To provide additional material to fill the joint and create a strong bond.

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10
Q

True or False: Preheating the pipe before welding can help prevent cracking.

A

True

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11
Q

What is the purpose of post-weld heat treatment?

A

To relieve stresses and reduce the risk of cracking in the weld.

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12
Q

Fill in the blank: The __________ is the area where the weld metal and base metal meet.

A

weld zone

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13
Q

What is a common defect found in pipe welds?

A

Porosity, which are small holes caused by trapped gas.

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14
Q

Multiple choice: Which welding technique is best suited for thin-walled pipes?
A) SMAW
B) TIG
C) FCAW
D) SAW

A

B) TIG

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15
Q

What does the term ‘tack weld’ mean?

A

A temporary weld used to hold pieces in place before final welding.

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16
Q

True or False: The diameter of the pipe does not affect the welding technique used.

A

False

17
Q

What is the significance of the ‘heat-affected zone’ (HAZ) in welding?

A

It is the area of the base metal that has had its microstructure and properties altered due to the heat of welding.

18
Q

Fill in the blank: The __________ is used to protect the molten weld from contamination.

A

shielding gas

19
Q

What is the main advantage of using MIG welding for pipe applications?

A

It allows for faster welding speeds and is easier to learn.

20
Q

Multiple choice: What type of electrode is used in TIG welding?
A) Consumable
B) Non-consumable
C) Solid
D) Flux-cored

A

B) Non-consumable

21
Q

What is the typical position for pipe welding known as ‘6G’?

A

A fixed position where the pipe is at an angle of 45 degrees.

22
Q

True or False: All welding processes produce the same amount of heat.

A

False

23
Q

What does ‘amperage’ refer to in welding?

A

The amount of electric current used during the welding process.

24
Q

Fill in the blank: A __________ is used to test the integrity of a weld after it has been completed.

A

weld inspection

25
Q

What is a common method for inspecting welds?

A

Ultrasonic testing or radiographic testing.

26
Q

Multiple choice: Which of the following is a safety precaution when pipe welding?
A) Wear gloves
B) Use a welding helmet
C) Ensure proper ventilation
D) All of the above

A

D) All of the above

27
Q

What does the term ‘duty cycle’ refer to in welding?

A

The percentage of time a welder can operate in a given time period without overheating.

28
Q

True or False: The type of material being welded does not affect the welding parameters.

A

False

29
Q

What is the purpose of a welding rod?

A

To provide filler material and create the weld joint.

30
Q

Fill in the blank: The __________ method is often used for welding stainless steel pipes.

A

TIG welding

31
Q

What is meant by the term ‘weld penetration’?

A

The depth to which the weld metal has fused into the base metal.

32
Q

Multiple choice: Which type of pipe requires more stringent welding procedures?
A) PVC
B) Carbon steel
C) Stainless steel
D) Copper

A

C) Stainless steel

33
Q

What is a ‘weld map’?

A

A documentation of the welding process and parameters used for a specific project.

34
Q

True or False: The position of the welder does not affect the quality of the weld.

A

False

35
Q

What does the term ‘slag’ refer to in welding?

A

The impurities that float on top of a weld pool during the welding process.

36
Q

Fill in the blank: A __________ is often used to clean the weld area before starting.

A

wire brush

37
Q

What is the impact of moisture on welding rods?

A

Moisture can lead to hydrogen embrittlement and defects in the weld.

38
Q

Multiple choice: Which of the following is a common shielding gas used in TIG welding?
A) Argon
B) Oxygen
C) Nitrogen
D) Helium

A

A) Argon

39
Q

What is the significance of the ‘weld joint configuration’?

A

It affects the strength and integrity of the weld.

Welding (1 decks)

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