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Welding > Cutting Chapter 9 > Flashcards

Cutting Chapter 9 Flashcards

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Welding Inspection Basics flashcards
1
Q

What percent carbon , steel develops weak and brittle properties?

A

Above 1.4 percent

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2
Q

!.4 percent carbon, steel develops weak and brittle properties similar to those of what?

A

Cast Iron

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3
Q

The AISI and SAE designations are essentially different.

A

F

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4
Q

What is the only difference between AISI and SAE?

A

AISI systems sometimes use letter prefix to indicate the manufacturing process that produced the steel.

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5
Q

A

A

Open hearth steel

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6
Q

B

A

Acid Bessemer carbon steel

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7
Q

C

A

Basic open-hearth carbon steel

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8
Q

D

A

Acid open-hearth carbon steel

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9
Q

E

A

Electric furnace steel

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10
Q

Nonmagnetic in the annealed condition and nonhardenable by heat treatment.

A

Austenitic stainless steels

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11
Q

Austenitic steels can be hardened significantly by cold working.

A

T

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12
Q

Austentic steels can combine ——- —— + ——– ——- with good ——- ——- over a broad ———— ——–

A

excellent corrosion

heat resistance

mechanical properties

broad temperature range

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13
Q

Austentic stainless steel make up the largest of the 3 common grade stainless steels

A

T

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14
Q

The force or load applied to a specimen that causes it to deform.

A

Stress

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15
Q

Maximum tensile stress a material can withstand with out exceeding its elastic limit.

A

Tensile Strength

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16
Q

Tensile Strength AKA

A

Yield Strength

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17
Q

Rolled metal

A

Sheet metal

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18
Q

What is the uniform thickness of sheet metal

A

less than 3/16 in

19
Q

U-shaped forms made of 2 flanges connected by a common web.

A

Channels

20
Q

The channel C8 X 11.5 is a channel having a normal depth of?

A

8 inches

21
Q

The channel C8 X 11.5 has a weight of?

A

11.5 pounds per foot of length

22
Q

Most common method of removing surface contamination?

A

Mechanical cleaning

23
Q

Tools used for mechanical cleaning include…. 3

A

Hand Tools
Power Tools
Special Sandblasting Equipment

24
Q

The welding position is important because some electrodes such as E7024 & E7028, can only be used in the ——– and ———– fillet weld positions

A

Flat

Horizontal

25
Q

You can attempt to weld in vertical or overhead positions with electrodes over 3/16 inches.

A

F except for low hydrogen electrodes

26
Q

The recommended limitation for low-hydrogen is

A

5/32 inch

27
Q

Performed by printing the ASTM number on the material (shape or plate) with an indelible marker or paintstick.

A

Labeling

28
Q

involves assigning a color to a base metal type and then spraying that color in the material

A

Color-coding

29
Q

Because it is difficult to identify base metal types, most sites have a system to ———- or ——— the various types of metals being used.

A

Label

Color code

30
Q

Largest group of stainless steels

A

Austenitic Stainless Steels

31
Q

Austenitic Stainless Steels are

A

nonmagnetic.

32
Q

Also non magnetic

A

Nonferrous metals

Manganese Steels

33
Q

Both hot-rolled and cold-finished carbon steel are milled in —- — —

A

standard structure shapes

34
Q

standard structure shapes such as 5

A 
Rods
Bars
Beams
Channels
Angles
35
Q

Has a blue-gray, smooth to scaly surface, but oxidizes to a rough, red brown rust when exposed to weather.

A

Hot-rolled carbon steel

36
Q

Has a smooth, gray finish that oxidizes to a fine red brown rust when weathered

A

Cold-rolled carbon steel

37
Q

Mass (weight) of a specific volume of metal

A

Density

38
Q

Density is aka 2 things

A

Specific gravity

Specific density

39
Q

The weight of a metal compared to the weight of an equal volume of water

A

Specific gravity

40
Q

Inverse of conductivity

A

Resistivity

41
Q

Calculated from its measured resistance to current flow

A

Electrical conductivity of a metal

42
Q

The lower the resitivity value, the higher the conductivity value and the more current a metal can carry for it’s size

A

T

43
Q

The resistivity of any material increases and it’s conductivity decreases as its temperature….

A

rises

Welding (20 decks)

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