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Simple machines millwright level 2 formulas > Metallurgy > Flashcards

Metallurgy Flashcards

1
Q

Pig iron furnace

A

Continuous

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2
Q

What is limestone used for

A

A flux

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3
Q

Pig iron furnace temp

A

1000 f (537) c

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4
Q

Convert coal into…

A

Coke
Baked for 18 hrs@ 1150 c

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5
Q

Heat treating process diagram

A
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6
Q

Cupola furnace

A

Used to make cast iron

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7
Q

Basic heat treating processes for steal are

A

1: hardening
2: tempering
3: annealing
4: normalizing

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8
Q

Hematite

A

Contains 70% iron
Verieis to black to brick red

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9
Q

Limonite

A

:Similar to hematite

:Contains water

:Brownish

:When water is removed it resembles hematite

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10
Q

Taconite

A

:low grade
:Contains 25-30% iron
: must be specially treated

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11
Q

Magnetite

A

:Rich black
: has the highest iron content
:not found in large quantities

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12
Q

Spark mild steel

A

Bright Long yellow spark stream

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13
Q

Spark test high carbon

A

Dark yellow burst and branch
Follows around wheel

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14
Q

Spark test stainless

A

Forked burst straw color moderate burst

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15
Q

Spark test nickel

A

Vary small orange

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16
Q

Spark test cast

A

Curved white many bursts

17
Q

Martensitic stainless

A

Can be hardend
No nickel
Chromium

18
Q

Ferritic stainless

A

Chromium
No nickel
Cutlery

19
Q

Austenitic stainless

A

Chromium and nickel
Most common

20
Q

Tensile strength

A

Ability of metal to pull without breaking

21
Q

Make up of brass

A

Copper and zink

22
Q

Toughness

A

The ability to resist impact

23
Q

Ductility

A

Ability to be stretched without breaking ( TO BE DRAWN)

24
Q

Identify by weight carbon steel

A

490

25
Q

Identify by weight aluminum

A

160

26
Q

Hardness

A

Resit penatrtion

27
Q

Machiablity

A

Measures ease with which you can cut and shape.

28
Q

Alloy steel types

A

:High strength low alloy
:Qt quench and temper structural steel high strength low alloy corrosion resistant
:maragering steel high nickel cobalt and molybdenum

29
Q

Tool steel

A

High quality

30
Q

Structure of soft steels

A

Pearlite consists of ferrite and cemetite

31
Q

Structure of hardened steel

A

Martensite

32
Q

Austintite formed..

A

When pearlite heated red hot only exists at high temp when cols go’s back to pearlite or martensite

33
Q

Carbon content .65 to .80 hardning temp

A

1450 to 1550

34
Q

Carbon content .80 to .95 hardening temp

A

1410 to 1460

35
Q

Carbon content. .95 to 1.10 hardening temp

A

1390 to 1430

36
Q

Carbon content 1.10 and over hardening temp

A

1380 to 1430

37
Q

Full annealing is

A

Opposite of hardening converts martensite to pearlite

38
Q

Full annealed by heating

A

Above upper critical temp for seels lessthan .85 carbon and above lower critical temp if have more than .85 carbon

39
Q
A

Simple machines millwright level 2 formulas (5 decks)

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