Metal Fabrication Flashcards Preview

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Flashcards in Metal Fabrication Deck (19)
1

process of refining ores to extract pure metal

smelting

2

chromium and nickel to steel =

corrosion resistant (stainless)

3

most basic,
molten metal poured into form

casting

4

process of fabrication eliminates flaws.
ex. structural steel (wide-flanged beams)

hot rolling

5

process of fabrication increases strength and elastic limit.
ex. thin steel shapes

cold rolling

6

process of fabrication:
pushed thru a die.
many aluminum sections.
(decorative + door/wdw frames)
advantage: @ large quantities,
easy to make custom.

extruding

7

process of fabrication:
sim. extruding, but PULLED thru a die.
all except iron

drawing

8

Mechanical Forming:
rolling machines/presses are used for

bending

9

Mechanical Forming:
successive one-directional bends

brake forming

10

Mechanical Forming:
round shapes on a lathe

spinning

11

Mechanical Forming:
patterns on flat sheets by rollers

embossing

12

these treatements change strength/workability

Thermal Treatments

13

annealing:

reheated and slowly cooled,
so more ductile.

improved machinability,
and cold-forming characteristics.

14

quenching:

heating and rapid cooling,
to strengthen (typ steel).

15

tempering:

heating and cooling,
to improve strength/workability (steel).

16

case hardening:

produces a hard-surface steel,
over relatively soft core.

17

Finishing Process:
alter surface in some way,
simple as result of forming,
to more involved grinding/buffing.

mechanical finishes

18

Finishing Process:
clean + prep for other finish,
or protect + color.

chemical finishes

19

Finishing Process:
applied matl’s for decoration/protection.
clear/opaque.

coatings