DIVISION 5: Metals Flashcards

1
Q

This are substances all of which are crystalline when solid and many of which are characterized by opacity, ductility, and unique luster when freshly fractured

A

METAL

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2
Q

It is a forming process of metal which produces new cross section of the material while improving its mechanical properties through the use of rotating rolls

A

ROLLING

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3
Q

It is a method of forming metal that is controlled, plastic deformation or working metals into predetermined shapes by means of pressure or impact blows or both

A

Forging

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4
Q

This is a metal forming process involving pulling a workpiece through a die providing reduction of the cross section of the workpiece

A

DRAWING

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5
Q

This metal forming process is also known as pressing which uses variety of sheet metal forming manufacturing processes.

A

STAMPING

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6
Q

This metal forming process that shapes the material by forcing it to flow through a shaped opening in a die and emerges as an elongated piece with the same profile as the die

A

EXTRUSION

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7
Q

This metal forming process involves pouring liquid metal into a mold, which contains a hallow cavity of the desired shape and them allowing it to cool and solidify

A

CASTING OR MOLDING

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8
Q

A type of metal that is silvery non magnetic and soft, also characterized by it light weight, low melting point, high thermal and electrical conductivity, and moderately high coefficient of expansion

A

ALUMINUM

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9
Q

It is an accelerated corrosive action that takes place when dissimilar metals are in contact in the presence of an electrolyte

A

GALVANIC ACTION OR GALVANIC CORROSION

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10
Q

Term refers to the protective coating (cladding) applied, primarily for corrosion resistance, to thin sheets of an alloy whose corrosion resistance is decreased by the constituents added to give strength

A

ALCLAD

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11
Q

Types of aluminum used for roofing, flashing gutter, etc.

A

ALUMINUM SHEET AND STRIP

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12
Q

It is a type of aluminum that is rolled to a thickness of 0.005” and is used mainly for thermal insulation and vapor barriers

A

ALUMINUM FOIL

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13
Q

It is a type of aluminum that is rigidized sheet fabricated of special aluminum alloy specifically developed for roofing and siding purposes

A

CORRUGATED ALUMINUM

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14
Q

It a type of aluminum that is use as a structural material, extruded therefore can be produced economically to meet the specified structural design requirements

A

STRUCTURAL ALUMINUM

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15
Q

Type of aluminum that are pre fabricated units which are generally manufactured on modular or non modular window width dimensions for the exterior of buildings

A

ALUMINUM PANELS

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16
Q

Type of aluminum that comprises a system of construction called skin construction

A

SANDWICH PANEL

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17
Q

ACP is a type of flat panel that consists of 2 thin aluminum sheets blinded to a non aluminum core. What is the meaning of ACP?

A

Aluminum Composite Panel

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18
Q

Other term for ACP

A

ACM ( Aluminum Composite Material)

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19
Q

This is used to coat the aluminum sheets making it very rigid and strong despite its light weight.

A

PVDF (Polyvinylidene Flouride) or POLYESTER PAINT

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20
Q

This core for aluminum sheets is an insulating material no less than 10 cm thick when its use is refrigeration insulation

A

Low density Polyethylene

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21
Q

Type of aluminum used for fencing, particularly chain link fencing and insect screening

A

ALUMINUM MESH AND WIRE CLOTH

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22
Q

Give the 6 basic type of aluminum finish.

A
  • MECHANICAL FINISH
  • CHEMICAL FINISH
  • ELECTROLYTIC FINISH
  • ELECTROPLATING
  • PORCELAIN OR VITREOUS ENAMEL
  • PAINT
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23
Q

What type of paint is not to be used on aluminum?

A

LEAD BASED PAINTS

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24
Q

Pure of its kind is tough, malleable silvery white metal that is soft and ductile as copper, easily magnetized and is the most magnetically permeable of the metals, what kind of metal is it?

A

IRON

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25
Q

A commercial form in which iron is first prepared

A

CRUDE OR PIG IRON

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26
Q

It is an iron-carbon iron that is poured while molten into forms. Often used in architectural field mainly for piping and fittings, ornamental iron work, hardware, etc

A

CAST IRON

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27
Q

Name two generally used types of cast iron.

A

GRAY CAST IRON AND MALLEABLE CAST IRON

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28
Q

It is almost pure iron and is characterized as soft, malleable, tough, fatigue-resistant, and resistant to progressive corrosion.

A

WROUGHT IRON

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29
Q

This is defined as alloy of iron and carbon which do not contain more than 2% carbon and which are made in malleable or ingot form.

A

STEEL

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30
Q

Why can’t galvanized pipe used as gas pipes?

A

Flaking of zinc sometimes causes the pipe to burst

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31
Q

These pipes have a high resistance to fire and heat which is why they are also used for fire sprinklers. Often it is also used as gas line.

A

BLACK PIPE

32
Q

Which type of steel is used as structural steel, reinforcement for concrete, corrugated steel, steel mesh and wire cloth, steel windows and door, and hardware?

A

WROUGHT CARBON STEELS

33
Q

These are type of steel which has added manganese, silicon, aluminum, titanium and molybdenum in insufficient quantity to produce unobtainable to carbon steels.

A

ALLOY STEELS

34
Q

What are the group of trade name steels with improved mechanical properties and resistance to atmospheric corrosion?

A

HIGH-STRENGTH LOW-ALLOY STEELS

35
Q

These are highly alloyed steels that contain more than 10% chromium, and used for their resistance to heat, oxidation and corrosion

A

STAINLESS STEEL

36
Q

What type of metal is ductile, malleable, non magnetic metal with a characteristic of bright, reddish brown in color?

A

COPPER

37
Q

What metal has the highest electrical and thermal conductivity of any substances except silver?

A

COPPER

38
Q

What do you call the green color reaction to corrosion due to the exposure of copper to air and salt water?

A

PATINA

39
Q

What type of metal is soft, ductile, malleable, and bluish-white in color, normally covered with a thin film of stannic oxide?

A

TIN

40
Q

What is this of type of metal that is medium hard, bluish-white metal that is characterized by brittleness and low strength?

A

ZINC

41
Q

What are the uses of zinc?

A
  • protective coatings on iron and steel
  • die-casting metal
  • alloying element in brasses
42
Q

It is the most common galvanized material used in architecture and is available in flat or corrugated?

A

GALVANIZED IRON (STEEL) SHEET AND STRIP

43
Q

What are the situations that causes galvanized sheet to become defaced and discolored?

A
  • DAMPNESS

* EXTREMES IN TEMPERATURES

44
Q

What kind of metal is an alloy of copper and zinc with small quantities of other elements sometimes added to give the special qualities?

A

BRASS

45
Q

What kind of metal is a rich golden-brown metal, originally worked by forging and particularly suited for casting since it is corrosion resistant, dense and hard enough for a mold?

A

BRONZE

46
Q

True bronze is an alloy of _____ and _____.

A

COPPER; TIN

47
Q

It is a steel-white metal which take a brilliant polish and is harder than cobalt or nickel?

A

CHROMIUM

48
Q

One of the most commonly encountered usage of chromium in architecture?

A

PLATING

49
Q

What is an inert silvery metal that is resistant to strong alkalies and to most acids, resembles iron in strength and toughness?

A

NICKEL

50
Q

What is a blue-gray, soft, very heavy metal that is extremely workable and has a good corrosion resistance, used for pipes, rod, wire, and paint?

A

LEAD

51
Q

What are the 4 method of joining metal?

A
  • SOLDERING
  • BRAZING
  • WELDING
  • RIVETS
52
Q

What is a method of joining metals used to make electrical connections, to seal joints hermetically them in with another, lower melting metal or alloy called the solder?

A

SOLDERING

53
Q

What are the 4 usual methods of soldering?

A
  • METAL BATH DIP SOLDER
  • SOLDERING IRON
  • TORCH
  • SWEAT METHOD
54
Q

What is the metal-joining process where the work pieces to be joined are immersed in a pot of molten solder?

A

METAL BATH DIP SOLDER

55
Q

What is metal-joining method the iron piece is preheated and applied to the joint along with the solder and the flux?

A

SOLDERING IRON

56
Q

What is this metal-joining method which is limited to metal that can be heated without altering their characteristics, heated by torch flame?

A

TORCH

57
Q

What is this metal-joining method of heating of the metals to be joined causes the solder to run the joint; often used for joining copper tubing and fittings;?

A

SWEAT METHOD

58
Q

3 types of fluxing for soldering

A
  • CORROSIVE
  • NEUTRAL
  • NONCORROSIVE
59
Q

What is this fluxes are known to be an acid type and salt type fluxes that cannot be used for most electrical work?

A

CORROSIVE FLUXES

60
Q

What is this mild type of fluxes that are used easily to solder metals and one of its example is stearic acid?

A

NEUTRAL FLUX

61
Q

What is this type of fluxes that leaves residues which are non corrosive and non conductive and therefore need not remove? one principal type is called ROSIN

A

NONCORROSIVE FLUXES

62
Q

This type of soldering is generally used if the shpe and position of the joint or the composition of metals are not adaptable to welding?

A

BRAZING

63
Q

What type of soldering is a process by which two metals are so joined that there is an actual union of the inter atomic bonds?

A

WELDING

64
Q

What are the two general type of welding? and what makes its weld?

A
  • pressure welding (pressure and heat)

* fusion welding (heat and added metal)

65
Q

What is the process of welding at elevated pressures, normally underwater, is called?

A

HYPERBARIC WELDING

66
Q

These are the devices used to join or fasten metals using a metal cylinder on which it has a head at one end and then inserted on the protruding end that is flattened to tie the two piece together.

A

RIVETS

67
Q

What are the most common reinforcement concrete that can be plain or deformed for better bonding to the concrete?

A

STEEL BARS OF ROD

68
Q

What is the smallest and largest diameter of deformed round steel bars that are available in the market?

A

10; 36

69
Q

What is the most generally used grade of steel bars are used architecturally?

A

INTERMEDIATE GRADE

70
Q

What is the kind of concrete reinforcement that can be formed into various sheets shaped in diamond, crimp, herringbone, and Z-rib to name a few?

A

EXPANDED MESH

71
Q

These are made of cold-drawn steel wire and is widely used for reinforcement of concrete slabs and floors, as well as stuccoed work?

A

WIRE FABRIC

72
Q

These are used to reinforced concrete slabs used in lightweight constructions which consists of series of wire welded together to form a grid pattern.

A

WELDED WIRE FABRIC

73
Q

This is a wire fabric that is built up of either single or stranded longitudinal wires with cross wires running diagonally across the fabric?

A

TRIANGLE MESH FABRIC

74
Q

TRUE OR FALSE: The bright red rust that forms in a few days on reinforcement expose in rain is detrimental to the steel?

A

FALSE, except if the actual rust scales causes reduction to the cross section of the bar

75
Q

What is a concrete containing fibrous material which increases its structural integrity of the concrete called?

A

FIBER- REINFORCED CONCRETE

76
Q

TRUE OR FALSE: If a large quantity of reinforcement bars is stored at the site for an extended period; it is well to build shed over the storage racks?

A

TRUE