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Welding Week > Week 1 > Flashcards

Week 1 Flashcards

1
Q

What do we call a mixture of two or more elements in a metal?

A

Alloy

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2
Q

What element determines the basic properties of steel?

A

Iron

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3
Q

Stainless steels are defined by the presence of:

A

Chromium

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4
Q

The ability of a metal to resist penetration is called:

A

Hardness

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5
Q

The ability of a metal to be stretched into thin wire is called:

A

Ductility

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6
Q

ASTM specification for steel products starts with the letter “A” means what:

A

Ferrous metals

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7
Q

What does metal do when it is heated?

A

Expands

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8
Q

List four ways to identify a metal bar?

A 
a.
SURFACE APPEARANCE
b.
SPARK TEST
C.
CHIP TEST
d.
MAGNETIC TEST
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9
Q

Name the five basic weld points:

A 
a.
BUTT
b.
CORNER
C.
LAP
d.
TEE
e.
EDGE
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10
Q

One of the major differences between gas fusion welding and brazing is, that in brazing:

A

a.

The base metal is not melted

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11
Q

Which of the following are distinguishing features of a Carburizing flame:

A

C. Two inner flame cones and an outer blue envelope

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12
Q

Identify the oxygen-acetylene flame in order from the coldest temperature to the hottest
temperature?

A

B. Carburizing, neutral, oxidizing

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13
Q

When the edges of two pieces of metal are heated until they flow together, it is called:

A

B. Fusion welding

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14
Q

To safely move a pressurized cylinder short distances, it can be:

A

C. Placed on a cylinder cart designed for this purpose.

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15
Q

What serious condition is indicated when a torch emits a loud and shrill squeal or hissing sound?

A

B. A flashback

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16
Q

What are bits of slag, flux, oxides, or dirt trapped inside a weld called?

A

C. Inclusions

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17
Q

When torch welding, what metal would produce the most hazardous fumes?

A

D. Galvanized

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18
Q

To what group of metals is oxygen-acetylene cutting confined to?

A

B. Ferrous metals

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19
Q

When storing oxygen and acetylene cylinders, they can.

A

B. Not to be stored together at all

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20
Q

If you believe that you have a problem with an oxygen regulator, you:

A

A. Should replace it or have it repaired by a qualified repair person

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21
Q

The thicker the metal, the smaller the tip orifice required for welding. T/f

A

False

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22
Q

Use of grease or oil on an oxygen-acetylene unit can cause an explosion. T/f

A

True

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23
Q

The higher the carbon content in steel, the lower the melting point t/f

A

True

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24
Q

When installing a regulator on a gas cylinder, cracking means ?

A

Opening the valve on the cylinder slightly then closing before installing regulator

25
Q

In a welding shop, you should assume that all work and/or tools are hot. T/f

26
Q

Acetylene fittings have special right hand threads. T/f

27
Q

You may use a flame to check for leaks on a regulator and hoses t/f

28
Q

Quenching is the process of cooling a metal slowly t/f

29
Q

An edge joint is considered one of the strongest welded joints t/f

30
Q

The standards for proper ventilation for welding areas are set by Cal-Fed. T/f

A

False ans. Cal-osha

31
Q

The cooling rate of metal is a factor in heat treatment of steel. T/f

32
Q

The last two numbers of the ASI number system for steels indicate chemical properties. T/f

33
Q

What is the basic principle of oxygen-acetylene flame cutting?

A

B. A chemical reaction process called oxidation aided by heat

34
Q

The point where the weld face meets the base metal is called the?

35
Q

Oxygen with a regulator can be use in or with:

A

D none of the above

36
Q

In any oxygen-acetylene cutting operation, one of the major safety hazards is the:

A

D. All of the above

37
Q

Low carbon steel is harder than high carbon steel T/f

38
Q

The metallurgical composition of the filter and the ______should be close to the same metals.

A

B. Base metals

39
Q

A metal that is harder than a file has a Brinell Hardness number of what ?

A

C. 600+BHN

40
Q

Welding equipment should be operated in a well_____ area

A

A. Ventilated

41
Q

How is density of a metal measured ?

42
Q

When oxygen-acetylene cutting is performed, excessive slag is a indication of:

A

B. Cutting speed is too low

43
Q

The cutting action takes place when______ comes in contact with the red molten metal.

44
Q

What shade lens is used for oxygen-acetylene welding of mild steel?

45
Q

Identify the information given in each part of this weld (a & b), and draw the joint with the proper weld information. Note: use a tee joint as an example.

A. Fillet weld, flush contour, 12” long, other side, OAW
B. ½” fillet weld, concave, 1” long weld, with 3” pitch, arrow side
C. Draw the joint (side view, birds eye view)

46
Q

46.Draw the following welding symbols and the weld joints. Place weld information in the
proper position. Note: Use a tee joint to show position.
d. ⅜” fillet weld arrow side

e. ½” double fillet weld

C. ⅜” fillet weld 3” long with a 8” pitch, arrow side

47
Q

Explain the proper safety procedures for preparing and making an oxygen-acetylene flame cut on an 8” H-beam in the field (not in a weld shop.)

A
  1. PWSP
  2. JHA
  3. OK to Work or Clearance
  4. HOT WORK PERMIT
  5. FIRE WATCH
  6. PROPER PPE AND FIRE EXTUINGISHER
  7. CLEAR AREA OF FLAMMABLE DEBRIS (RAGS,TRASH, CHEMICALS, ETC.) AND PROTECT EQUIPMENT
    FROM POTENTIAL DAMAGE
  8. CHECK/INSPECT FUEL CYLINDERS FOR PROPER OPERATION
  9. CHECK FUEL CYLINDERS FOR SUFFICIENT AMOUNT OF GAS PRESSURE
    10..CHECK/INSPECT TORCH FOR PROPER OPERATION AND CLEAN TIP
  10. LIGHT TORCH AND ADJUST FLAME
  11. SAFELY MAKE CUT, BEWARE OF EQUIPMENT AND PERSONEL
  12. MARK HOT MATERIALS WITH CHALK
    14.DISPOSE OF MATERIALS SAFELY AND CHECK AREA FOR SIGNS OF FIRE
  13. SIGN OFF HOT WORK PERMIT, NOTIFY OPERATIONS AND FILE JHA
48
Q

ignition inside the blowpipe or hoses

49
Q

metals having an iron base

50
Q

the ability of a metal to resist being pulled apart

A

Tensile strength

51
Q

compound of carbon and hydrogen

52
Q

the process of a metal growing larger when heated

A

Thermal expansion

53
Q

the process of reheating and re-quenching metal to remove brittleness

54
Q

the study of metals or metal properties

A

Metallurgy

55
Q

Metal containing no iron

A

Non-ferrous

56
Q

ability of a metal to resist surface penetration, indentation, or abrasion

57
Q

used to measure relative toughness

A

Impact test

58
Q

used to identify an unknown piece of metal by removing a small amount

59
Q

the process of removing hardness by cooling a metal slowly

Welding Week (2 decks)

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