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Second Year Welding > Layout > Flashcards

Layout Flashcards

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Welding Inspection Basics flashcards
1
Q

Lay out angled from 0 to 180 degrees
With the centre head attachment can also be used on pipe or cylinders

A

Bevel protractor

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2
Q

Small arc and circles
Transfer small measurements
To draw a circle set to any radius

A

Divider/ compass

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3
Q

Large arcs and circles
Transferring large measurements
Can be attached to any steel or wooden bar

A

Trammel points

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4
Q

Has an articulating arm to scribe along any contour

A

Contour markers

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5
Q

Used for fine detail
High degree of accuracy

A

Layout dye

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6
Q

Mark up for alignment

A

Use punch marks to mark the material if good fit up is achieved but you must move the piece to continue to work on it.

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7
Q

What tool is good to mark heavily scaled plate to be cut

A

Centre punch

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8
Q

Used to check the id of rolled plate

A

Sweeps

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9
Q

What is the best template material to use to mark circles on pipe

A

Gasket material

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10
Q

….. is measured by OD only

A

Tube

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11
Q

What is the last size of pipe that is measured in NPS

A

12

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12
Q

What is the best way to divide a pipe in quarters

A

Fold a paper in half twice

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13
Q

What is the centre finder mainly used to find

A

TDC

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14
Q

NPS

A

Nominal pipe size

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15
Q

Directly related to wall thickness and will determine how much pressure that a pipe can handle

A

Schedule

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16
Q

L shape (angle iron)

A

Can be used as a straight edge on pipe

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17
Q

For marking reference points 0 - 180 degrees opposite each other

A

Centre finder

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18
Q

When does pipe begin to be measured in OD

A

14

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19
Q

How many wraps of a wraparound is recommended to ensure alignment

A

2

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20
Q

Templates
Benefits of

A

Improve accuracy
Reduce labour and time spent on layout work
Provide better nesting of components

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21
Q

AIT
What is this template

A

Middle piece of a multiple piece elbow slot on exaughsts (mitre)

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22
Q

Provides TDC (top dead center) pin acts as a centre punch

A

Centre head

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23
Q

Two common uses for dividers/ compass

A

Scribe smaller circles and arcs
Accurately transfer repeated measurements

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24
Q

Two uses for trammels

A

Scribe larger circles and arcs
To accurately transfer repeated measurements

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25
Q

What layout tool is specially designed for developing cut lines at any given angle on pipe and structural shapes

A

A contour marker

26
Q

The divisions marked on a protractor head measure

A

Degrees

27
Q

The most accurate method of placing repeated measurements on a piece of steel plate is to use a

A

A set of dividers

28
Q

List two markers that are preferred for accuracy when marking steel

A

Scribers
Soap stone

29
Q

Permanent layout marks are made using

A

A centre punch

30
Q

Centre punch marks on a cut line are used to

A

Act as a guide for improved cutting accuracy

31
Q

Three general template categories

A

Layout templates
Checking templates
Guiding templates

32
Q

Two materials suitable for temporary templates

A

Gasket paper
Cardboard

33
Q

Three materials that may be used for permanent templates

A

Metal
Wood
Plastic

34
Q

Templates marked with quadrant lines are most likely used when working with

A

Pipe

35
Q

Define
Nominal pipe size

A

Piping by name only. Nominal pipe size is NOT equal to outside diameter for pipe 12” and smaller, but is equal to the OD for pipe 14” and larger

36
Q

What factor determines the nominal pipe size for 12” and smaller pipe
And
14” and larger pipe

A

12” - the inside diameter of standard pipe
14” - the outside diameter

37
Q

What significant factor remains the same for any size pipe

A

The outside diameter

38
Q

Explain the difference between sched 40 pipe and standard wall pipe

A

Each size of sched 40 pipe has a dif wall thickness whereas standard pipe 10” and over has a wall thickness of 3/8

39
Q

When dealing with pipe what does the term sched number mean

A

The strength of pipe with reference to its wall thickness

40
Q

In the metric system what unit of measure is used for pipe wall thickness

A

Millimeters

41
Q

Two tools that are handy for custom layout of mitre lines on pipe are a ________ and a ________

A

Contour marker
Wraparound

42
Q

Consists of a series of rounded bumps
Min stress and reduces notch effect

A

Low stress stamps

43
Q

Neither to large or complicated, usually 45 degrees

A

Oblique drawing

44
Q

3 types of templates

A

Layout template - mark lines for cutting , bending shearing or braking

Checking templates - check amount of forming, rolling and braking operations

Guiding templates - punch and drilling

45
Q

Used to check the ID of rolled plate

A

Sweeps

46
Q

Temporary template material

A

Paper and cardboard

47
Q

Wear resistant template material

A

Gasket, plastic or metal

48
Q

The last size of pipe that is measured in NPS

A

12”

49
Q

Original 3 thicknesses with pipe are

A

Standard
Extra strong
Double extra strong

50
Q

True or false
Standard and sched 40 have the same wall thickness through 10”

A

True

51
Q

True of false
XS and sched 80 have the same wall thickness through 8”

A

True

52
Q

True or false
Nominal pipe size is not equal to the outside diameter for 12” and smaller but equal to OD for 14” pipe and larger

A

True

53
Q

True or false
Standard pipe 10” and larger has a 3/8” wall thickness
Extra strong pipe 8” and larger has a 1/2” wall thickness

A

True

54
Q

Tools needed for isometric drawings (2)

A

Tee square and set square 30 - 60 - 90

55
Q

Oblique drawings are usually 45 degrees true or false

A

True

56
Q

Unidirectional (dimensions on blue prints)

A

One direction

57
Q

Aligned (dimensions on blueprints)

A

Will line up with whatever side it is on. Vertical and horizontal.

58
Q

Find the bolt hole angle

A

360 degrees divide by number of holes

59
Q

Schedules of wall thickness uses a numbering system in divisions of ten: 10, 20, 30, 40, 50….
True or false

A

True

60
Q

Schedule is more variety and doesn’t have to be as thick, directly related to how much pressure that pipe can handle
True or false

A

True

Second Year Welding (13 decks)

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